PGMAllPool.cpp revision a5c9bd1199e10d51c8f5fef6293b765845ada754
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * PGM Shadow Page Pool.
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Copyright (C) 2006-2010 Oracle Corporation
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * available from http://www.virtualbox.org. This file is free software;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * you can redistribute it and/or modify it under the terms of the GNU
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * General Public License (GPL) as published by the Free Software
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync/*******************************************************************************
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync* Header Files *
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync*******************************************************************************/
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/*******************************************************************************
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync* Internal Functions *
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync*******************************************************************************/
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable);
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic const char *pgmPoolPoolKindToStr(uint8_t enmKind);
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsync#if defined(VBOX_STRICT) && defined(PGMPOOL_WITH_OPTIMIZED_DIRTY_PT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackCheckPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PTPAE pGstPT);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolTrackFlushGCPhysPTsSlow(PVM pVM, PPGMPAGE pPhysPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncPPGMPOOLPHYSEXT pgmPoolTrackPhysExtAlloc(PVM pVM, uint16_t *piPhysExt);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackPhysExtFree(PVM pVM, uint16_t iPhysExt);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackPhysExtFreeList(PVM pVM, uint16_t iPhysExt);
7666082b743c5e146a8cee6cc794ff4bc3fd0ffdvboxsync * Checks if the specified page pool kind is for a 4MB or 2MB guest page.
7666082b743c5e146a8cee6cc794ff4bc3fd0ffdvboxsync * @returns true if it's the shadow of a 4MB or 2MB guest page, otherwise false.
7666082b743c5e146a8cee6cc794ff4bc3fd0ffdvboxsync * @param enmKind The page kind.
7666082b743c5e146a8cee6cc794ff4bc3fd0ffdvboxsyncDECLINLINE(bool) pgmPoolIsBigPage(PGMPOOLKIND enmKind)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes a chain of pages sharing the same access monitor.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage A page in the chain.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @todo VBOXSTRICTRC
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolMonitorChainFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
22e281e75ed636601178296c6daebda8f1d17c59vboxsync LogFlow(("pgmPoolMonitorChainFlush: Flush page %RGp type=%d\n", pPage->GCPhys, pPage->enmKind));
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * Find the list head.
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * Iterate the list flushing each shadow page.
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * Wrapper for getting the current context pointer to the entry being modified.
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * @returns VBox status code suitable for scheduling.
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * @param pVM VM Handle.
c17f5c90f2cb60b38ecabebce128724c6ff2d036vboxsync * @param pvDst Destination address
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * @param pvSrc Source guest virtual address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysSrc The source guest physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param cb Size of data to read
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(int) pgmPoolPhysSimpleReadGCPhys(PVM pVM, void *pvDst, CTXTYPE(RTGCPTR, RTHCPTR, RTGCPTR) pvSrc, RTGCPHYS GCPhysSrc, size_t cb)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync memcpy(pvDst, (RTHCPTR)((uintptr_t)pvSrc & ~(RTHCUINTPTR)(cb - 1)), cb);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* @todo in RC we could attempt to use the virtual address, although this can cause many faults (PAE Windows XP guest). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return PGMPhysSimpleReadGCPhys(pVM, pvDst, GCPhysSrc & ~(RTGCPHYS)(cb - 1), cb);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Process shadow entries before they are changed by the guest.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * For PT entries we will clear them. For PD entries, we'll simply check
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * for mapping conflicts and set the SyncCR3 FF if found.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVCpu VMCPU handle
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The head page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The guest physical fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param uAddress In R0 and GC this is the guest context fault address (flat).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * In R3 this is the host context 'fault' address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param cbWrite Write size; might be zero if the caller knows we're not crossing entry boundaries
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsyncvoid pgmPoolMonitorChainChanging(PVMCPU pVCpu, PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, CTXTYPE(RTGCPTR, RTHCPTR, RTGCPTR) pvAddress, unsigned cbWrite)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(pPage->iMonitoredPrev == NIL_PGMPOOL_IDX, ("%#x (idx=%#x)\n", pPage->iMonitoredPrev, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned off = GCPhysFault & PAGE_OFFSET_MASK;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: %RGv phys=%RGp cbWrite=%d\n", (RTGCPTR)(CTXTYPE(RTGCPTR, uintptr_t, RTGCPTR))pvAddress, GCPhysFault, cbWrite));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: page idx=%d phys=%RGp (next=%d) kind=%s\n", pPage->idx, pPage->GCPhys, pPage->iMonitoredNext, pgmPoolPoolKindToStr(pPage->enmKind), cbWrite));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT iShw=%x\n", iShw));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvAddress, GCPhysFault, sizeof(GstPte));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolMonitorChainChanging 32_32: deref %016RX64 GCPhys %08RX32\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, GstPte.u & X86_PTE_PG_MASK));
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync /* page/2 sized */
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPT));
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync const unsigned iShw = (off / sizeof(X86PTE)) & (X86_PG_PAE_ENTRIES - 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("PGMPOOLKIND_PAE_PT_FOR_32BIT_PT iShw=%x\n", iShw));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvAddress, GCPhysFault, sizeof(GstPte));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolMonitorChainChanging pae_32: deref %016RX64 GCPhys %08RX32\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, GstPte.u & X86_PTE_PG_MASK));
576d4214137bce409cdcf01e8df4a0bca5e0b2d1vboxsync LogFlow(("pgmPoolMonitorChainChanging PAE for 32 bits: iGst=%x iShw=%x idx = %d page idx=%d\n", iGst, iShw, iShwPdpt, pPage->enmKind - PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPD));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (iShwPdpt == pPage->enmKind - (unsigned)PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < 2; i++)
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync if ((uShw.pPDPae->a[iShw + i].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
22e281e75ed636601178296c6daebda8f1d17c59vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShwPdpt=%#x iShw=%#x!\n", iShwPdpt, iShw+i));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* !IN_RING0 */
247b55faa8d054157f2481e68caca36f4dc9542cvboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw+i, uShw.pPDPae->a[iShw+i].u));
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync /* paranoia / a bit assumptive. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((uShw.pPDPae->a[iShw2].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShwPdpt=%#x iShw2=%#x!\n", iShwPdpt, iShw2));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* !IN_RING0 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPT));
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvAddress, GCPhysFault, sizeof(GstPte));
22e281e75ed636601178296c6daebda8f1d17c59vboxsync Log4(("pgmPoolMonitorChainChanging pae: deref %016RX64 GCPhys %016RX64\n", PGMSHWPTEPAE_GET_HCPHYS(uShw.pPTPae->a[iShw]), GstPte.u & X86_PTE_PAE_PG_MASK));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync /* paranoia / a bit assumptive. */
1843553dbdf4e46417158b4c6348c503adf10740vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PTEPAE);
1843553dbdf4e46417158b4c6348c503adf10740vboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, (RTHCPTR)((RTHCUINTPTR)pvAddress + sizeof(GstPte)), GCPhysFault + sizeof(GstPte), sizeof(GstPte));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvAddress + sizeof(GstPte), GCPhysFault + sizeof(GstPte), sizeof(GstPte));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync Log4(("pgmPoolMonitorChainChanging pae: deref %016RX64 GCPhys %016RX64\n", PGMSHWPTEPAE_GET_HCPHYS(uShw.pPTPae->a[iShw2]), GstPte.u & X86_PTE_PAE_PG_MASK));
22e281e75ed636601178296c6daebda8f1d17c59vboxsync const unsigned iShw = off / sizeof(X86PTE); // ASSUMING 32-bit guest paging!
1843553dbdf4e46417158b4c6348c503adf10740vboxsync LogFlow(("pgmPoolMonitorChainChanging: PGMPOOLKIND_32BIT_PD %x\n", iShw));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPD));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
22e281e75ed636601178296c6daebda8f1d17c59vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync# endif /* !IN_RING0 */
ebbb1f6c7e8bae363a4efda4b35b58c8467d24bcvboxsync# endif /* !IN_RING0 */
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync LogFlow(("pgmPoolMonitorChainChanging: 32 bit pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* paranoia / a bit assumptive. */
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PTE);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
0e77737b0ba913683e614db11463b31ca67aacbevboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync# endif /* !IN_RING0 */
22e281e75ed636601178296c6daebda8f1d17c59vboxsync# endif /* !IN_RING0 */
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync LogFlow(("pgmPoolMonitorChainChanging: 32 bit pd iShw=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPD->a[iShw2].u));
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
2d53f6e472561965d363674e17f48d3bdffc24d3vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX32 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
0e77737b0ba913683e614db11463b31ca67aacbevboxsync# ifdef IN_RC /* TLB load - we're pushing things a bit... */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFree(pVM, uShw.pPD->a[iShw].u & X86_PDE_PG_MASK, pPage->idx, iShw);
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPD));
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync#endif /* !IN_RING0 */
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * Causes trouble when the guest uses a PDE to refer to the whole page table level
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * structure. (Invalidate here; faults later on when it tries to change the page
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * table entries -> recheck; probably only applies to the RC case.)
806d0b554daa555364af5f87bc96eccbe760db7avboxsync# endif /* !IN_RING0 */
806d0b554daa555364af5f87bc96eccbe760db7avboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync /* paranoia / a bit assumptive. */
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDEPAE);
806d0b554daa555364af5f87bc96eccbe760db7avboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync#endif /* !IN_RING0 */
806d0b554daa555364af5f87bc96eccbe760db7avboxsync# endif /* !IN_RING0 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPDPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Hopefully this doesn't happen very often:
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * - touching unused parts of the page
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync * - messing with the bits of pd pointers without changing the physical address
22e281e75ed636601178296c6daebda8f1d17c59vboxsync /* PDPT roots are not page aligned; 32 byte only! */
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync const unsigned offPdpt = GCPhysFault - pPage->GCPhys;
22e281e75ed636601178296c6daebda8f1d17c59vboxsync if (iShw < X86_PG_PAE_PDPE_ENTRIES) /* don't use RT_ELEMENTS(uShw.pPDPT->a), because that's for long mode only */
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected pdpt conflict at iShw=%#x!\n", iShw));
03319aeaef07ef63a404237f2cb56199131f4a03vboxsync# endif /* !IN_RING0 */
1157941288c9533575a655c660af55d13da31eefvboxsync# endif /* !IN_RING0 */
5e797edc29f96c8367de4fbf5874171c24a89ba7vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPT->a[iShw].u));
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync /* paranoia / a bit assumptive. */
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync const unsigned iShw2 = (offPdpt + cbWrite - 1) / sizeof(X86PDPE);
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZGuestCR3WriteConflict));
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
e149c362e69e5f0bbd82da11fd8163b2d29c3a72vboxsync# endif /* !IN_RING0 */
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync# endif /* !IN_RING0 */
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPT->a[iShw2].u));
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPD));
7082d29724f6c3788977a51591b0379fd3acbf72vboxsync Assert(!(uShw.pPDPae->a[iShw].u & PGM_PDFLAGS_MAPPING));
46b1ac1c3302722f93e787d0f0693965e88f5ceevboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync /* paranoia / a bit assumptive. */
5cf54b3ffeb7ee90685dcaec329ef71a729f5947vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDEPAE);
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync Assert(!(uShw.pPDPae->a[iShw2].u & PGM_PDFLAGS_MAPPING));
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPDPT));
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync * Hopefully this doesn't happen very often:
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * - messing with the bits of pd pointers without changing the physical address
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync LogFlow(("pgmPoolMonitorChainChanging: pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPT->a[iShw].u));
22e281e75ed636601178296c6daebda8f1d17c59vboxsync pgmPoolFree(pVM, uShw.pPDPT->a[iShw].u & X86_PDPE_PG_MASK, pPage->idx, iShw);
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync /* paranoia / a bit assumptive. */
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDPE);
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync LogFlow(("pgmPoolMonitorChainChanging: pdpt iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPT->a[iShw2].u));
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync pgmPoolFree(pVM, uShw.pPDPT->a[iShw2].u & X86_PDPE_PG_MASK, pPage->idx, iShw2);
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FaultPML4));
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync * Hopefully this doesn't happen very often:
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync * - messing with the bits of pd pointers without changing the physical address
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync LogFlow(("pgmPoolMonitorChainChanging: pml4 iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPML4->a[iShw].u));
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync pgmPoolFree(pVM, uShw.pPML4->a[iShw].u & X86_PML4E_PG_MASK, pPage->idx, iShw);
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync /* paranoia / a bit assumptive. */
13ba5527caaa9b8c4fee29f22e374fa67c4c6f72vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PML4E);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync LogFlow(("pgmPoolMonitorChainChanging: pml4 iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPML4->a[iShw2].u));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync pgmPoolFree(pVM, uShw.pPML4->a[iShw2].u & X86_PML4E_PG_MASK, pPage->idx, iShw2);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync#endif /* IN_RING0 */
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync * Checks if a access could be a fork operation in progress.
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync * Meaning, that the guest is setting up the parent process for Copy-On-Write.
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync * @returns true if it's likly that we're forking, otherwise false.
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync * @param pPool The pool.
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync * @param pDis The disassembled instruction.
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * @param offFault The access offset.
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsyncDECLINLINE(bool) pgmPoolMonitorIsForking(PPGMPOOL pPool, PDISCPUSTATE pDis, unsigned offFault)
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * i386 linux is using btr to clear X86_PTE_RW.
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * The functions involved are (2.6.16 source inspection):
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * clear_bit
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * ptep_set_wrprotect
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * copy_one_pte
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * copy_pte_range
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync * copy_pmd_range
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * copy_pud_range
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync * copy_page_range
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * copy_process
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync /** @todo Validate that the bit index is X86_PTE_RW. */
5db1d52ffbcaa46c3d944c6c2d9c552306817d9avboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,Fork));
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync return true;
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync return false;
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * Determine whether the page is likely to have been reused.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @returns true if we consider the page as being reused for a different purpose.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @returns false if we consider it to still be a paging page.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @param pVM VM Handle.
22e281e75ed636601178296c6daebda8f1d17c59vboxsync * @param pVCpu VMCPU Handle.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @param pRegFrame Trap register frame.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @param pDis The disassembly info for the faulting instruction.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @param pvFault The fault address.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @remark The REP prefix check is left to the caller because of STOSD/W.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsyncDECLINLINE(bool) pgmPoolMonitorIsReused(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pDis, RTGCPTR pvFault)
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync /** @todo could make this general, faulting close to rsp should be a safe reuse heuristic. */
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync /* Fault caused by stack writes while trying to inject an interrupt event. */
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync Log(("pgmPoolMonitorIsReused: reused %RGv for interrupt stack (rsp=%RGv).\n", pvFault, pRegFrame->rsp));
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("Reused instr %RGv %d at %RGv param1.flags=%x param1.reg=%d\n", pRegFrame->rip, pDis->pCurInstr->opcode, pvFault, pDis->param1.flags, pDis->param1.base.reg_gen));
22e281e75ed636601178296c6daebda8f1d17c59vboxsync /* Non-supervisor mode write means it's used for something else. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* call implies the actual push of the return address faulted */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync case OP_MOVNTDQ: /* solaris - hwblkclr & hwblkpagecopy */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes the page being accessed.
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync * @param pVCpu The VMCPU handle.
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The pool page (head).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pDis The disassembly of the write instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pRegFrame The trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The fault address as guest physical address.
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * @param pvFault The fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @todo VBOXSTRICTRC
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsyncstatic int pgmPoolAccessHandlerFlush(PVM pVM, PVMCPU pVCpu, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pDis,
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * First, do the flushing.
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync * Emulate the instruction (xp/w2k problem, requires pc/cr2/sp detection).
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * Must do this in raw mode (!); XP boot will fail otherwise.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync VBOXSTRICTRC rc2 = EMInterpretInstructionCPU(pVM, pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_ALL, &cbWritten);
49748bb305bd71f672cd083af208f4bb08c5d6abvboxsync AssertMsg(rc2 == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rc2))); /* ASSUMES no complicated stuff here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv, ignoring.\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->StatMonitorRZIntrFailPatch2);
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,EmulateInstr));
8b984478b755f4d3091b977d9beac9fb7434279fvboxsync LogFlow(("pgmPoolAccessHandlerPT: returns %Rrc (flushed)\n", rc));
8b984478b755f4d3091b977d9beac9fb7434279fvboxsync * Handles the STOSD write accesses.
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync * @returns VBox status code suitable for scheduling.
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The pool page (head).
14e483cf65160fb363043534151245ae4c215766vboxsync * @param pDis The disassembly of the write instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pRegFrame The trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The fault address as guest physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(int) pgmPoolAccessHandlerSTOSD(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pDis,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pDis->mode == CPUMODE_32BIT || pDis->mode == CPUMODE_64BIT);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Increment the modification counter and insert it into the list
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * of modified pages the first time.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Execute REP STOSD.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This ASSUMES that we're not invoked by Trap0e on in a out-of-sync
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * write situation, meaning that it's safe to write here.
47b5427d1a541bcd269bc625c35b19d849071edfvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint32_t iPrevSubset = PGMRZDynMapPushAutoSubset(pVCpu);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, (RTGCPTR)pu32, uIncrement);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, (RTGCPTR)pu32, uIncrement);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PGMPhysSimpleWriteGCPhys(pVM, GCPhysFault, &pRegFrame->rax, uIncrement);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Handles the simple write accesses.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVCpu The VMCPU handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The pool page (head).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pDis The disassembly of the write instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pRegFrame The trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The fault address as guest physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pfReused Reused state (out)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(int) pgmPoolAccessHandlerSimple(PVM pVM, PVMCPU pVCpu, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pDis,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault, bool *pfReused)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Increment the modification counter and insert it into the list
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * of modified pages the first time.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear all the pages. ASSUMES that pvFault is readable.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint32_t iPrevSubset = PGMRZDynMapPushAutoSubset(pVCpu);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, pvFault, DISGetParamSize(pDis, &pDis->param1));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, pvFault, DISGetParamSize(pDis, &pDis->param1));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Interpret the instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync VBOXSTRICTRC rc = EMInterpretInstructionCPU(pVM, pVCpu, pDis, pRegFrame, pvFault, EMCODETYPE_ALL, &cb);
42c1972c22e09797b4b24afbd0ec114ed076c37cvboxsync AssertMsg(rc == VINF_SUCCESS, ("%Rrc\n", VBOXSTRICTRC_VAL(rc))); /* ASSUMES no complicated stuff here. */
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for %04x:%RGv - opcode=%d\n",
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync pRegFrame->cs, (RTGCPTR)pRegFrame->rip, pDis->pCurInstr->opcode));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,EmulateInstr));
78a205e3fc6719d59e8c561b3d287d3a4f879852vboxsync#if 0 /* experimental code */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvFault, GCPhysFault, sizeof(GstPte));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Check the new value written by the guest. If present and with a bogus physical address, then
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * it's fairly safe to assume the guest is reusing the PT.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGMPhysGCPhys2HCPhys(pVM, GstPte.u & X86_PTE_PAE_PG_MASK, &HCPhys);
42c1972c22e09797b4b24afbd0ec114ed076c37cvboxsync LogFlow(("pgmPoolAccessHandlerSimple: returns %Rrc cb=%d\n", VBOXSTRICTRC_VAL(rc), cb));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * \#PF Handler callback for PT write accesses.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code (appropriate for GC return).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM Handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param uErrorCode CPU Error code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pRegFrame Trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * NULL on DMA and other non CPU access.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault address (cr2).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The GC physical address corresponding to pvFault.
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsync * @param pvUser User argument.
42c1972c22e09797b4b24afbd0ec114ed076c37cvboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser)
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsync STAM_PROFILE_START(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fForcedFlush = false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAccessHandler: pvFault=%RGv pPage=%p:{.idx=%d} GCPhysFault=%RGp\n", pvFault, pPage, pPage->idx, GCPhysFault));
47b5427d1a541bcd269bc625c35b19d849071edfvboxsync if (PHYS_PAGE_ADDRESS(GCPhysFault) != PHYS_PAGE_ADDRESS(pPage->GCPhys))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Pool page changed while we were waiting for the lock; ignore. */
3e6d3b0af632bdcd931b5149915c7b8be1a732cdvboxsync Log(("CPU%d: pgmPoolAccessHandler pgm pool page for %RGp changed (to %RGp) while waiting!\n", pVCpu->idCpu, PHYS_PAGE_ADDRESS(GCPhysFault), PHYS_PAGE_ADDRESS(pPage->GCPhys)));
47b5427d1a541bcd269bc625c35b19d849071edfvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,Handled), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return VINF_SUCCESS; /* SMP guest case where we were blocking on the pgm lock while the same page was being marked dirty. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if 0 /* test code defined(VBOX_STRICT) && defined(PGMPOOL_WITH_OPTIMIZED_DIRTY_PT) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync void *pvShw = PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTX_SUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
5cf54b3ffeb7ee90685dcaec329ef71a729f5947vboxsync pgmPoolTrackCheckPTPaePae(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PTPAE)pvGst);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Disassemble the faulting instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = EMInterpretDisasOne(pVM, pVCpu, pRegFrame, pDis, NULL);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(rc == VERR_PAGE_NOT_PRESENT || rc == VERR_PAGE_TABLE_NOT_PRESENT, ("Unexpected rc %d\n", rc));
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * We should ALWAYS have the list head as user parameter. This
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * is because we use that page to record the changes.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Maximum nr of modifications depends on the page type. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT)
42c1972c22e09797b4b24afbd0ec114ed076c37cvboxsync * Incremental page table updates should weigh more than random ones.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * (Only applies when started from offset 0)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ( pPage->pvLastAccessHandlerRip >= pRegFrame->rip - 0x40 /* observed loops in Windows 7 x64 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && pPage->pvLastAccessHandlerRip < pRegFrame->rip + 0x40
0f5d1b2abd9e82c7ee46f1327287c44856604bcbvboxsync && pvFault == (pPage->pvLastAccessHandlerFault + pDis->param1.size)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && pVCpu->pgm.s.cPoolAccessHandler == (pPage->cLastAccessHandlerCount + 1))
20a793635760c71752932fde640ba328cab84348vboxsync Log(("Possible page reuse cMods=%d -> %d (locked=%d type=%s)\n", pPage->cModifications, pPage->cModifications * 2, pgmPoolIsPageLocked(&pVM->pgm.s, pPage), pgmPoolPoolKindToStr(pPage->enmKind)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage->cLastAccessHandlerCount = pVCpu->pgm.s.cPoolAccessHandler;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FlushReinit));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("Mod overflow %RGv cMods=%d (locked=%d type=%s)\n", pvFault, pPage->cModifications, pgmPoolIsPageLocked(&pVM->pgm.s, pPage), pgmPoolPoolKindToStr(pPage->enmKind)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Check if it's worth dealing with.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fReused = false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ( ( pPage->cModifications < cMaxModifications /** @todo #define */ /** @todo need to check that it's not mapping EIP. */ /** @todo adjust this! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && !(fReused = pgmPoolMonitorIsReused(pVM, pVCpu, pRegFrame, pDis, pvFault))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && !pgmPoolMonitorIsForking(pPool, pDis, GCPhysFault & PAGE_OFFSET_MASK))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Simple instructions, no REP prefix.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolAccessHandlerSimple(pVM, pVCpu, pPool, pPage, pDis, pRegFrame, GCPhysFault, pvFault, &fReused);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* A mov instruction to change the first page table entry will be remembered so we can detect
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * full page table changes early on. This will reduce the amount of unnecessary traps we'll take.
79b07d7ae28b916539c6397e010a5cc05e300551vboxsync && !pPage->cLocked /* only applies to unlocked pages as we can't free locked ones (e.g. cr3 root). */
0f5d1b2abd9e82c7ee46f1327287c44856604bcbvboxsync pPage->cLastAccessHandlerCount = pVCpu->pgm.s.cPoolAccessHandler;
c20b837b2c912dd4dcaaa676e15acd2b230108f0vboxsync /* Make sure we don't kick out a page too quickly. */
5b6e2c9a765c3c72295acc15791af8a700746956vboxsync /* ignore the 2nd write to this page table entry. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage->cLastAccessHandlerCount = pVCpu->pgm.s.cPoolAccessHandler;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,Handled), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Windows is frequently doing small memset() operations (netio test 4k+).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We have to deal with these or we'll kill the cache and performance.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fValidStosd = false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && pRegFrame->ecx * 4 <= PAGE_SIZE - ((uintptr_t)pvFault & PAGE_OFFSET_MASK)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && (pRegFrame->eax == 0 || pRegFrame->eax == 0x80) /* the two values observed. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && pRegFrame->rcx * 8 <= PAGE_SIZE - ((uintptr_t)pvFault & PAGE_OFFSET_MASK)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && (pRegFrame->rax == 0 || pRegFrame->rax == 0x80) /* the two values observed. */
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync rc = pgmPoolAccessHandlerSTOSD(pVM, pPool, pPage, pDis, pRegFrame, GCPhysFault, pvFault);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,RepStosd), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* REP prefix, don't bother. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,RepPrefix));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolAccessHandler: eax=%#x ecx=%#x edi=%#x esi=%#x rip=%RGv opcode=%d prefix=%#x\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pRegFrame->eax, pRegFrame->ecx, pRegFrame->edi, pRegFrame->esi, (RTGCPTR)pRegFrame->rip, pDis->pCurInstr->opcode, pDis->prefix));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if defined(PGMPOOL_WITH_OPTIMIZED_DIRTY_PT) && defined(IN_RING0)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* E.g. Windows 7 x64 initializes page tables and touches some pages in the table during the process. This
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * leads to pgm pool trashing and an excessive amount of write faults due to page monitoring.
b45d66c0e496e2fd861479202f3d43aad592bd14vboxsync || ( !pgmPoolMonitorIsReused(pVM, pVCpu, pRegFrame, pDis, pvFault)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && !pgmPoolMonitorIsForking(pPool, pDis, GCPhysFault & PAGE_OFFSET_MASK))
1ce20e84ae29a712029d1e213740388d7e158d5cvboxsync /* Flush any monitored duplicates as we will disable write protection. */
1ce20e84ae29a712029d1e213740388d7e158d5cvboxsync /* Find the monitor head. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync while (pPageHead->iMonitoredPrev != NIL_PGMPOOL_IDX)
1ce20e84ae29a712029d1e213740388d7e158d5cvboxsync pPageHead = &pPool->aPages[pPageHead->iMonitoredPrev];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("Flush duplicate page idx=%d GCPhys=%RGp type=%s\n", pPageHead->idx, pPageHead->GCPhys, pgmPoolPoolKindToStr(pPageHead->enmKind)));
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync /* The flushing above might fail for locked pages, so double check. */
1ce20e84ae29a712029d1e213740388d7e158d5cvboxsync /* Temporarily allow write access to the page table again. */
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync rc = PGMHandlerPhysicalPageTempOff(pVM, pPage->GCPhys, pPage->GCPhys);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGMShwMakePageWritable(pVCpu, pvFault, PGM_MK_PG_IS_WRITE_FAULT);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* In the SMP case the page table might be removed while we wait for the PGM lock in the trap handler. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync ("PGMShwModifyPage -> GCPtr=%RGv rc=%d\n", pvFault, rc));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_OPTIMIZED_DIRTY_PT */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,FlushModOverflow));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Not worth it, so flush it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * If we considered it to be reused, don't go back to ring-3
e85d76a7e5a047db3cdc8576ff5f412c7b73bbabvboxsync * to emulate failed instructions since we usually cannot
e85d76a7e5a047db3cdc8576ff5f412c7b73bbabvboxsync * interpret then. This may be a bit risky, in which case
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync * the reuse detection must be fixed.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync rc = pgmPoolAccessHandlerFlush(pVM, pVCpu, pPool, pPage, pDis, pRegFrame, GCPhysFault, pvFault);
e85d76a7e5a047db3cdc8576ff5f412c7b73bbabvboxsync /* Make sure that the current instruction still has shadow page backing, otherwise we'll end up in a loop. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (PGMShwGetPage(pVCpu, pRegFrame->rip, NULL, NULL) == VINF_SUCCESS)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = VINF_SUCCESS; /* safe to restart the instruction. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,FlushPage), a);
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync# endif /* !IN_RING3 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Check references to guest physical memory in a PAE / PAE page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
10e1bc06b2908a0af56d92ffdbadd25b36a5ef61vboxsync * @param pShwPT The shadow page table (mapping of the page).
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync * @param pGstPT The guest page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackCheckPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PTPAE pGstPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync unsigned cErrors = 0;
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync unsigned LastPTE = ~0U; /* initialized to shut up gcc */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync RTHCPHYS LastHCPhys = NIL_RTHCPHYS; /* initialized to shut up gcc */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_MIN(RT_ELEMENTS(pShwPT->a), pPage->iFirstPresent); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(!PGMSHWPTEPAE_IS_P(pShwPT->a[i]), ("Unexpected PTE: idx=%d %RX64 (first=%d)\n", i, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), pPage->iFirstPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGMPhysGCPhys2HCPhys(pVM, pGstPT->a[i].u & X86_PTE_PAE_PG_MASK, &HCPhys);
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync || PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]) != HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("rc=%d idx=%d guest %RX64 shw=%RX64 vs %RHp\n", rc, i, pGstPT->a[i].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), HCPhys));
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync rc = PGMPhysGCPhys2HCPhys(pVM, pPage->GCPhys, &HCPhysPT);
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync for (unsigned iPage = 0; iPage < pPool->cCurPages; iPage++)
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync if (pTempPage->enmKind == PGMPOOLKIND_PAE_PT_FOR_PAE_PT)
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync PPGMSHWPTPAE pShwPT2 = (PPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pVM, pTempPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned j = 0; j < RT_ELEMENTS(pShwPT->a); j++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && PGMSHWPTEPAE_GET_HCPHYS(pShwPT2->a[j]) == HCPhysPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("GCPhys=%RGp idx=%d %RX64 vs %RX64\n", pTempPage->GCPhys, j, PGMSHWPTEPAE_GET_LOG(pShwPT->a[j]), PGMSHWPTEPAE_GET_LOG(pShwPT2->a[j])));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(!cErrors, ("cErrors=%d: last rc=%d idx=%d guest %RX64 shw=%RX64 vs %RHp\n", cErrors, LastRc, LastPTE, pGstPT->a[LastPTE].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[LastPTE]), LastHCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* VBOX_STRICT */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a PAE / PAE page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns nr of changed PTEs
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pGstPT The guest page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pOldGstPT The old cached guest page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param fAllowRemoval Bail out as soon as we encounter an invalid PTE
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pfFlush Flush reused page table (out)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(unsigned) pgmPoolTrackFlushPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PTPAE pGstPT,
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync PCX86PTPAE pOldGstPT, bool fAllowRemoval, bool *pfFlush)
b45d66c0e496e2fd861479202f3d43aad592bd14vboxsync unsigned cChanged = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_MIN(RT_ELEMENTS(pShwPT->a), pPage->iFirstPresent); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(!PGMSHWPTEPAE_IS_P(pShwPT->a[i]), ("Unexpected PTE: idx=%d %RX64 (first=%d)\n", i, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), pPage->iFirstPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Check the new value written by the guest. If present and with a bogus physical address, then
fa7355597d7eba5b4ca8a23056ebe1b8fb306fdbvboxsync * it's fairly safe to assume the guest is reusing the PT.
57399ab65e2825c324fb9dcb4642d4ae2c232509vboxsync if (!PGMPhysIsGCPhysValid(pPool->CTX_SUFF(pVM), pGstPT->a[i].u & X86_PTE_PAE_PG_MASK))
3a21cbe769e7500039a2d17c794a911f7acb2dadvboxsync /* If the old cached PTE is identical, then there's no need to flush the shadow copy. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pGstPT->a[i].u & X86_PTE_PAE_PG_MASK) == (pOldGstPT->a[i].u & X86_PTE_PAE_PG_MASK))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGMPhysGCPhys2HCPhys(pPool->CTX_SUFF(pVM), pGstPT->a[i].u & X86_PTE_PAE_PG_MASK, &HCPhys);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(rc == VINF_SUCCESS && PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]) == HCPhys, ("rc=%d guest %RX64 old %RX64 shw=%RX64 vs %RHp\n", rc, pGstPT->a[i].u, pOldGstPT->a[i].u, PGMSHWPTEPAE_GET_LOG(pShwPT->a[i]), HCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint64_t uHostAttr = PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & (X86_PTE_P | X86_PTE_US | X86_PTE_A | X86_PTE_D | X86_PTE_G | X86_PTE_PAE_NX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fHostRW = !!(PGMSHWPTEPAE_GET_U(pShwPT->a[i]) & X86_PTE_RW);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint64_t uGuestAttr = pGstPT->a[i].u & (X86_PTE_P | X86_PTE_US | X86_PTE_A | X86_PTE_D | X86_PTE_G | X86_PTE_PAE_NX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Something was changed, so flush it. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPTPaePae: i=%d pte=%RX64 hint=%RX64\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pOldGstPT->a[i].u & X86_PTE_PAE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pOldGstPT->a[i].u & X86_PTE_PAE_PG_MASK, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flush a dirty page
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM Handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param idxSlot Dirty array slot index
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param fAllowRemoval Allow a reused page table to be removed
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolFlushDirtyPage(PVM pVM, PPGMPOOL pPool, unsigned idxSlot, bool fAllowRemoval = false)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(idxSlot < RT_ELEMENTS(pPool->aIdxDirtyPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPool->aIdxDirtyPages[idxSlot] == NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX && pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync AssertMsg(pPage->fDirty, ("Page %RGp (slot=%d) not marked dirty!", pPage->GCPhys, idxSlot));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("Flush dirty page %RGp cMods=%d\n", pPage->GCPhys, pPage->cModifications));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync uint32_t iPrevSubset = PGMRZDynMapPushAutoSubset(pVCpu);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* First write protect the page again to catch all write accesses. (before checking for changes -> SMP) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGMHandlerPhysicalReset(pVM, pPage->GCPhys);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGMShwGetPage(VMMGetCpu(pVM), pPage->pvDirtyFault, &fFlags, &HCPhys);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && (!(fFlags & X86_PTE_RW) || HCPhys != pPage->Core.Key))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* In the SMP case the page table might be removed while we wait for the PGM lock in the trap handler. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync ("PGMShwGetPage -> GCPtr=%RGv rc=%d flags=%RX64\n", pPage->pvDirtyFault, rc, fFlags));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Flush those PTEs that have changed. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGM_GCPHYS_2_PTR(pVM, pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync unsigned cChanges = pgmPoolTrackFlushPTPaePae(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PTPAE)pvGst,
c33db29e7b41467a35675031f5f5233839909083vboxsync (PCX86PTPAE)&pPool->aDirtyPages[idxSlot][0], fAllowRemoval, &fFlush);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Note: we might want to consider keeping the dirty page active in case there were many changes. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* This page is likely to be modified again, so reduce the nr of modifications just a bit here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage->cModifications = RT_MAX(1, pPage->cModifications / 2);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPool->cDirtyPages == RT_ELEMENTS(pPool->aIdxDirtyPages))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPool->cDirtyPages <= RT_ELEMENTS(pPool->aIdxDirtyPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("Removed dirty page %RGp cMods=%d cChanges=%d\n", pPage->GCPhys, pPage->cModifications, cChanges));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Add a new dirty page
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM Handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolAddDirtyPage(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertCompile(RT_ELEMENTS(pPool->aIdxDirtyPages) == 8 || RT_ELEMENTS(pPool->aIdxDirtyPages) == 16);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(idxFree < RT_ELEMENTS(pPool->aIdxDirtyPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX && pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPool->cDirtyPages >= RT_ELEMENTS(pPool->aIdxDirtyPages))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->StatDirtyPageOverFlowFlush);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFlushDirtyPage(pVM, pPool, idxFree, true /* allow removal of reused page tables*/);
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync Assert(pPool->cDirtyPages < RT_ELEMENTS(pPool->aIdxDirtyPages));
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync AssertMsg(pPool->aIdxDirtyPages[idxFree] == NIL_PGMPOOL_IDX, ("idxFree=%d cDirtyPages=%d\n", idxFree, pPool->cDirtyPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("Add dirty page %RGp (slot=%d)\n", pPage->GCPhys, idxFree));
5db1d52ffbcaa46c3d944c6c2d9c552306817d9avboxsync * Make a copy of the guest page table as we require valid GCPhys addresses
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * when removing references to physical pages.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * (The HCPhys linear lookup is *extremely* expensive!)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGM_GCPHYS_2_PTR(pVM, pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync memcpy(&pPool->aDirtyPages[idxFree][0], pvGst, PAGE_SIZE);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackCheckPTPaePae(pPool, pPage, (PPGMSHWPTPAE)pvShw, (PCX86PTPAE)pvGst);
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync pPool->idxFreeDirtyPage = (pPool->idxFreeDirtyPage + 1) & (RT_ELEMENTS(pPool->aIdxDirtyPages) - 1);
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync if ( pPool->cDirtyPages < RT_ELEMENTS(pPool->aIdxDirtyPages)
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync && pPool->aIdxDirtyPages[pPool->idxFreeDirtyPage] != NIL_PGMPOOL_IDX)
ec588a4ac8429a8b6c744544818b3ce3b2c75690vboxsync unsigned i;
75fca099c974cbbd48f132af1378c60232614760vboxsync for (i = 1; i < RT_ELEMENTS(pPool->aIdxDirtyPages); i++)
75fca099c974cbbd48f132af1378c60232614760vboxsync idxFree = (pPool->idxFreeDirtyPage + i) & (RT_ELEMENTS(pPool->aIdxDirtyPages) - 1);
57f41f24b7a290eba73c63449f44017d7917561dvboxsync if (pPool->aIdxDirtyPages[idxFree] == NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPool->cDirtyPages == RT_ELEMENTS(pPool->aIdxDirtyPages) || pPool->aIdxDirtyPages[pPool->idxFreeDirtyPage] == NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* !IN_RING3 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Check if the specified page is dirty (not write monitored)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @return dirty or not
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM Handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys Guest physical address
c33db29e7b41467a35675031f5f5233839909083vboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aIdxDirtyPages); i++)
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync return true;
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Reset all dirty pages by reinstating page monitoring.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM Handle.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync Assert(pPool->cDirtyPages <= RT_ELEMENTS(pPool->aIdxDirtyPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aIdxDirtyPages); i++)
75fca099c974cbbd48f132af1378c60232614760vboxsync pgmPoolFlushDirtyPage(pVM, pPool, i, true /* allow removal of reused page tables*/);
57f41f24b7a290eba73c63449f44017d7917561dvboxsync if ( pPool->cDirtyPages != RT_ELEMENTS(pPool->aIdxDirtyPages)
a3db4ff1e0aa7f94c9176ef16264df572eec0aebvboxsync && pPool->aIdxDirtyPages[pPool->idxFreeDirtyPage] != NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync unsigned i;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (i = 1; i < RT_ELEMENTS(pPool->aIdxDirtyPages); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(i != RT_ELEMENTS(pPool->aIdxDirtyPages), ("cDirtyPages %d", pPool->cDirtyPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPool->aIdxDirtyPages[pPool->idxFreeDirtyPage] == NIL_PGMPOOL_IDX || pPool->cDirtyPages == RT_ELEMENTS(pPool->aIdxDirtyPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Reset all dirty pages by reinstating page monitoring.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM Handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysPT Physical address of the page table
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolInvalidateDirtyPage(PVM pVM, RTGCPHYS GCPhysPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPool->cDirtyPages <= RT_ELEMENTS(pPool->aIdxDirtyPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync unsigned idxDirtyPage = RT_ELEMENTS(pPool->aIdxDirtyPages);
09d4e754a010196fe0d9d972b6ccc005ecb8b116vboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aIdxDirtyPages); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (idxDirtyPage != RT_ELEMENTS(pPool->aIdxDirtyPages))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFlushDirtyPage(pVM, pPool, idxDirtyPage, true /* allow removal of reused page tables*/);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ( pPool->cDirtyPages != RT_ELEMENTS(pPool->aIdxDirtyPages)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && pPool->aIdxDirtyPages[pPool->idxFreeDirtyPage] != NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync unsigned i;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (i = 0; i < RT_ELEMENTS(pPool->aIdxDirtyPages); i++)
a27fbcbb29ffc2196c2ebd0f2dad92f40c7ec65dvboxsync AssertMsg(i != RT_ELEMENTS(pPool->aIdxDirtyPages), ("cDirtyPages %d", pPool->cDirtyPages));
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync# endif /* PGMPOOL_WITH_OPTIMIZED_DIRTY_PT */
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * Inserts a page into the GCPhys hash table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolHashInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolHashInsert: %RGp\n", pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->GCPhys != NIL_RTGCPHYS); Assert(pPage->iNext == NIL_PGMPOOL_IDX);
75fca099c974cbbd48f132af1378c60232614760vboxsync * Removes a page from the GCPhys hash table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolHashRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync Log3(("pgmPoolHashRemove: %RGp\n", pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertReleaseMsgFailed(("GCPhys=%RGp idx=%#x\n", pPage->GCPhys, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees up one cache page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolCacheFreeOne(PPGMPOOL pPool, uint16_t iUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPool->iAgeHead != pPool->iAgeTail); /* We shouldn't be here if there < 2 cached entries! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Select one page from the tail of the age list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/* This is the alternative to the SyncCR3 pgmPoolCacheUsed calls.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPool->aPages[iToFree].iUserHead != NIL_PGMPOOL_USER_INDEX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint16_t i = pPool->aPages[iToFree].iAgePrev;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned j = 0; j < 10 && i != NIL_PGMPOOL_USER_INDEX; j++, i = pPool->aPages[i].iAgePrev)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPool->aPages[iToFree].iUserHead == NIL_PGMPOOL_USER_INDEX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync iToFree = i;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Reject any attempts at flushing the currently active shadow CR3 mapping.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Call pgmPoolCacheUsed to move the page to the head of the age list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (!pgmPoolIsPageLocked(&pPool->CTX_SUFF(pVM)->pgm.s, pPage))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolCacheFreeOne: refuse CR3 mapping\n"));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertLogRelReturn(iLoop < 8192, VERR_INTERNAL_ERROR);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Found a usable page, flush it and return.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* This flush was initiated by us and not the guest, so explicitly flush the TLB. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* todo: find out why this is necessary; pgmPoolFlushPage should trigger a flush if one is really needed. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Checks if a kind mismatch is really a page being reused
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * or if it's just normal remappings.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns true if reused and the cached page (enmKind1) should be flushed
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns false if not reused.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind1 The kind of the cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind2 The kind of the requested page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic bool pgmPoolCacheReusedByKind(PGMPOOLKIND enmKind1, PGMPOOLKIND enmKind2)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Never reuse them. There is no remapping in non-paging mode.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync case PGMPOOLKIND_PAE_PDPT_FOR_32BIT: /* never reuse them for other types */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * These cannot be flushed, and it's common to reuse the PDs as PTs.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Attempts to satisfy a pgmPoolAlloc request from the cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_CACHED_PAGE on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_FILE_NOT_FOUND if not found.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind The kind of mapping.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmAccess Access type for the mapping (only relevant for big pages)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The shadow page pool index of the user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The index into the user table (shadowed).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param ppPage Where to store the pointer to the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolCacheAlloc(PPGMPOOL pPool, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, PGMPOOLACCESS enmAccess, uint16_t iUser, uint32_t iUserTable, PPPGMPOOLPAGE ppPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Look up the GCPhys in the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheAlloc: %RGp kind %s iUser=%x iUserTable=%x SLOT=%d\n", GCPhys, pgmPoolPoolKindToStr(enmKind), iUser, iUserTable, i));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolCacheAlloc: slot %d found page %RGp\n", i, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Put it at the start of the use list to make sure pgmPoolTrackAddUser
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * doesn't flush it in case there are no more free use records.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = pgmPoolTrackAddUser(pPool, pPage, iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage->cModifications = 1; /* reset counter (can't use 0, or else it will be reinserted in the modified list) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The kind is different. In some cases we should now flush the page
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * as it has been reused, but in most cases this is normal remapping
57399ab65e2825c324fb9dcb4642d4ae2c232509vboxsync * of PDs as PT or big pages using the GCPhys field in a slightly
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * different way than the other kinds.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pgmPoolCacheReusedByKind((PGMPOOLKIND)pPage->enmKind, enmKind))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync } while (i != NIL_PGMPOOL_IDX);
01a590b833f412c36f58cc2ccbbd6b2a83c2b10dvboxsync Log3(("pgmPoolCacheAlloc: Missed GCPhys=%RGp enmKind=%s\n", GCPhys, pgmPoolPoolKindToStr(enmKind)));
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * Inserts a page into the cache.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @param pPool The pool.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @param pPage The cached page.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @param fCanBeCached Set if the page is fit for caching from the caller's point of view.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsyncstatic void pgmPoolCacheInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCanBeCached)
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * Insert into the GCPhys hash if the page is fit for that.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync Log3(("pgmPoolCacheInsert: Caching %p:{.Core=%RHp, .idx=%d, .enmKind=%s, GCPhys=%RGp}\n",
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), pPage->GCPhys));
bc8991845b5bd7e98758795748d3d76408756793vboxsync Log3(("pgmPoolCacheInsert: Not caching %p:{.Core=%RHp, .idx=%d, .enmKind=%s, GCPhys=%RGp}\n",
06de36c1229f14000638fa27993b13c9133e85f5vboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), pPage->GCPhys));
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * Insert at the head of the age list.
9a99bb9ca6c5bc8ef1977e01e13b05e5cc58319bvboxsync pPool->aPages[pPool->iAgeHead].iAgePrev = pPage->idx;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes a cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolCacheFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheFlushPage: %RGp\n", pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove the page from the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove it from the age list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iAgeNext].iAgePrev = pPage->iAgePrev;
750d4d0506a38b2e80c997075d40aad474e675fbvboxsync pPool->aPages[pPage->iAgePrev].iAgeNext = pPage->iAgeNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Looks for pages sharing the monitor.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the head page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns NULL if not found.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The Pool
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pNewPage The page which is going to be monitored.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic PPGMPOOLPAGE pgmPoolMonitorGetPageByGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pNewPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Look up the GCPhys in the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTGCPHYS GCPhys = pNewPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* find the head */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* ignore, no monitoring. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync } while (i != NIL_PGMPOOL_IDX);
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * Enabled write monitoring of a guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolMonitorInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorInsert %RGp\n", pPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Filter out the relevant kinds.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Nothing to monitor here. */
689e03ca2c98ca6feaab8d9de6e4687a98f14ccbvboxsync /* Nothing to monitor here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Install handler.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pPageHead = pgmPoolMonitorGetPageByGCPhys(pPool, pPage);
1a25adaca81841abf5e6cdfed02eaff64941357dvboxsync Assert(pPageHead != pPage); Assert(pPageHead->iMonitoredNext != pPage->idx);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFlushDirtyPage(pPool->CTX_SUFF(pVM), pPool, pPageHead->idxDirty, false /* do not remove */);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPageHead->iMonitoredNext].iMonitoredPrev = pPage->idx;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX); Assert(pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const RTGCPHYS GCPhysPage = pPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGMHandlerPhysicalRegisterEx(pVM, PGMPHYSHANDLERTYPE_PHYSICAL_WRITE,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerRC, MMHyperCCToRC(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo we should probably deal with out-of-memory conditions here, but for now increasing
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * the heap size should suffice. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgRC(rc, ("PGMHandlerPhysicalRegisterEx %RGp failed with %Rrc\n", GCPhysPage, rc));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsg(!(pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL) || VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3), ("fSyncFlags=%x syncff=%d\n", pVCpu->pgm.s.fSyncFlags, VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Disables write monitoring of a guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
2f1b3d7474489e653b75edf9492132a0f56aab4dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolMonitorFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Filter out the relevant kinds.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Nothing to monitor here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove the page from the monitored list or uninstall it if last.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pNewHead = &pPool->aPages[pPage->iMonitoredNext];
75fca099c974cbbd48f132af1378c60232614760vboxsync rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pNewHead),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pNewHead),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerRC, MMHyperCCToRC(pVM, pNewHead),
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync pPool->aPages[pPage->iMonitoredPrev].iMonitoredNext = pPage->iMonitoredNext;
10e1bc06b2908a0af56d92ffdbadd25b36a5ef61vboxsync pPool->aPages[pPage->iMonitoredNext].iMonitoredPrev = pPage->iMonitoredPrev;
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync rc = PGMHandlerPhysicalDeregister(pVM, pPage->GCPhys & ~(RTGCPHYS)PAGE_OFFSET_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsg(!(pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL) || VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync ("%#x %#x\n", pVCpu->pgm.s.fSyncFlags, pVM->fGlobalForcedActions));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove it from the list of modified pages (if in it).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Inserts the page into the list of modified pages.
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolMonitorModifiedInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolMonitorModifiedInsert: idx=%d\n", pPage->idx));
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync ("Next=%d Prev=%d idx=%d cModifications=%d Head=%d cModifiedPages=%d\n",
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync pPage->iModifiedNext, pPage->iModifiedPrev, pPage->idx, pPage->cModifications,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPool->iModifiedHead].iModifiedPrev = pPage->idx;
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync if (pPool->cModifiedPages > pPool->cModifiedPagesHigh)
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync * Removes the page from the list of modified pages and resets the
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync * moficiation counter.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @param pPool The pool.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @param pPage The page which is believed to be in the list of modified pages.
75fca099c974cbbd48f132af1378c60232614760vboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
75fca099c974cbbd48f132af1378c60232614760vboxsync Log3(("pgmPoolMonitorModifiedRemove: idx=%d cModifications=%d\n", pPage->idx, pPage->cModifications));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = NIL_PGMPOOL_IDX;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iModifiedPrev].iModifiedNext = pPage->iModifiedNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = pPage->iModifiedPrev;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Zaps the list of modified pages, resetting their modification counters in the process.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorModifiedClearAll: cModifiedPages=%d\n", pPool->cModifiedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(cPages == pPool->cModifiedPages, ("%d != %d\n", cPages, pPool->cModifiedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Handle SyncCR3 pool tasks
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if successfully added.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_SYNC_CR3 is it needs to be deferred to ring 3 (GC only)
9c425bdea5f0991df62922b1584b805a86f2f898vboxsync * @param pVCpu The VMCPU handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark Should only be used when monitoring is available, thus placed in
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * the PGMPOOL_WITH_MONITORING #ifdef.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolSyncCR3 fSyncFlags=%x\n", pVCpu->pgm.s.fSyncFlags));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * When monitoring shadowed pages, we reset the modification counters on CR3 sync.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Occasionally we will have to clear all the shadow page tables because we wanted
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * to monitor a page which was mapped by too many shadowed page tables. This operation
467e62e1aa999ec951e820d74498ef79dd1bedbdvboxsync * sometimes refered to as a 'lightweight flush'.
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync# ifdef IN_RING3 /* Don't flush in ring-0 or raw mode, it's taking too long. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# else /* !IN_RING3 */
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync Log(("SyncCR3: PGM_SYNC_CLEAR_PGM_POOL is set -> VINF_PGM_SYNC_CR3\n"));
467e62e1aa999ec951e820d74498ef79dd1bedbdvboxsync VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3); /** @todo no need to do global sync, right? */
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync /* Make sure all other VCPUs return to ring 3. */
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync# endif /* !IN_RING3 */
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync /* pgmPoolMonitorModifiedClearAll can cause a pgm pool flush (dirty page clearing), so make sure we handle this! */
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync Log(("pgmPoolMonitorModifiedClearAll caused a pgm flush -> call pgmPoolSyncCR3 again!\n"));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees up at least one user entry.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if successfully added.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolTrackFreeOneUser(PPGMPOOL pPool, uint16_t iUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Just free cached pages in a braindead fashion.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo walk the age list backwards and free the first with usage. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync } while (pPool->iUserFreeHead == NIL_PGMPOOL_USER_INDEX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Inserts a page into the cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This will create user node for the page, insert it into the GCPhys
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * hash, and insert it into the age list.
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if successfully added.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
bee80f3f77b15c166b7debd080a70e5231ba6751vboxsync * @param iUserTable The user table index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(int) pgmPoolTrackInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhys, uint16_t iUser, uint32_t iUserTable)
6b022885f2cb6a55167609edecd89570cd80001dvboxsync LogFlow(("pgmPoolTrackInsert GCPhys=%RGp iUser %x iUserTable %x\n", GCPhys, iUser, iUserTable));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * Check that the entry doesn't already exists.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(paUsers[i].iUser != iUser || paUsers[i].iUserTable != iUserTable, ("%x %x vs new %x %x\n", paUsers[i].iUser, paUsers[i].iUserTable, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Find free a user node.
965a56f05878cf7c9634998e98d0bed41ebf21dbvboxsync * Unlink the user node from the free list,
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * initialize and insert it into the user list.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * Insert into cache and enable monitoring of the guest page if enabled.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * Until we implement caching of all levels, including the CR3 one, we'll
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * have to make sure we don't try monitor & cache any recursive reuse of
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * a monitored CR3 page. Because all windows versions are doing this we'll
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * have to be able to do combined access monitoring, CR3 + PT and
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * PD + PT (guest PAE).
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * We're now cooperating with the CR3 monitor if an uncachable page is found.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync const bool fCanBeMonitored = true;
11c599b71a8c202a506b8623af57432c3d415ddavboxsync pgmPoolCacheInsert(pPool, pPage, fCanBeMonitored); /* This can be expanded. */
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * Adds a user reference to a page.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * This will move the page to the head of the
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * @returns VBox status code.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * @retval VINF_SUCCESS if successfully added.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * @param pPool The pool.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * @param pPage The cached page.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * @param iUser The user index.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * @param iUserTable The user table.
11c599b71a8c202a506b8623af57432c3d415ddavboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
11c599b71a8c202a506b8623af57432c3d415ddavboxsync Log3(("pgmPoolTrackAddUser GCPhys = %RGp iUser %x iUserTable %x\n", pPage->GCPhys, iUser, iUserTable));
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * Check that the entry doesn't already exists. We only allow multiple
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * users of top-level paging structures (SHW_POOL_ROOT_IDX).
11c599b71a8c202a506b8623af57432c3d415ddavboxsync AssertMsg(iUser != PGMPOOL_IDX_PD || iUser != PGMPOOL_IDX_PDPT || iUser != PGMPOOL_IDX_NESTED_ROOT || iUser != PGMPOOL_IDX_AMD64_CR3 ||
11c599b71a8c202a506b8623af57432c3d415ddavboxsync paUsers[i].iUser != iUser || paUsers[i].iUserTable != iUserTable, ("%x %x vs new %x %x\n", paUsers[i].iUser, paUsers[i].iUserTable, iUser, iUserTable));
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * Allocate a user node.
11c599b71a8c202a506b8623af57432c3d415ddavboxsync * Initialize the user node and insert it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFlushDirtyPage(pPool->CTX_SUFF(pVM), pPool, pPage->idxDirty, false /* do not remove */);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Tell the cache to update its replacement stats for this page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a user record associated with a page.
bee80f3f77b15c166b7debd080a70e5231ba6751vboxsync * This does not clear the entry in the user table, it simply replaces the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * user record to the chain of free records.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The HC physical address of the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The shadow page pool index of the user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The index into the user table (shadowed).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackFreeUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Unlink and free the specified user entry.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolTrackFreeUser %RGp %x %x\n", pPage->GCPhys, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Special: For PAE and 32-bit paging, there is usually no more than one user. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* General: Linear search. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Fatal: didn't find it */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("Didn't find the user entry! iUser=%#x iUserTable=%#x GCPhys=%RGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Gets the entry size of a shadow table.
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * @param enmKind The kind of page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The size of the entry in bytes. That is, 4 or 8.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * returned.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind)
e37007b39ddadf2af401414550b69c6c466f1633vboxsync * Gets the entry size of a guest table.
f8b934f4817639cddebe4d3c2ae25d39a91fe448vboxsync * @param enmKind The kind of page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The size of the entry in bytes. That is, 0, 4 or 8.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * returned.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind)
54fe68d807196dc565de24055996e634ee40ee92vboxsync /** @todo can we return 0? (nobody is calling this...) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Checks one shadow page table entry for a mapping of a physical page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns true / false indicating removal of all relevant PTEs
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPhysPage The guest page in question.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param fFlushPTEs Flush PTEs or allow them to be updated (e.g. in case of an RW bit change)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShw The shadow page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPte Page table entry or NIL_PGMPOOL_PHYSEXT_IDX_PTE if unknown
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic bool pgmPoolTrackFlushGCPhysPTInt(PVM pVM, PCPGMPAGE pPhysPage, bool fFlushPTEs, uint16_t iShw, uint16_t iPte)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTInt: pPhysPage=%RHp iShw=%d iPte=%d\n", PGM_PAGE_GET_HCPHYS(pPhysPage), iShw, iPte));
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync bool fRet = false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Assert sanity.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync AssertFatalMsg(iShw < pPool->cCurPages && iShw != NIL_PGMPOOL_IDX, ("iShw=%d\n", iShw));
e751d1e1e4ae424d4846a23da32f663d14960796vboxsync * Then, clear the actual mappings to the page in the shadow PT.
10e1bc06b2908a0af56d92ffdbadd25b36a5ef61vboxsync const uint32_t u32 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_NONE: /** No handler installed. */
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync case PGM_PAGE_HNDL_PHYS_STATE_DISABLED: /** Monitoring is temporarily disabled. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_WRITE: /** Write access is monitored. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* (shouldn't be here, will assert below) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Update the counter if we're removing references. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[iPte].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX32\n", iPte, pPT->a[iPte]));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Pte.n.u1Write = 0; /* need to disallow writes when dirty bit tracking is still active. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0, cFound = 0; i < RT_ELEMENTS(pPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("iFirstPresent=%d cPresent=%d u32=%RX32 poolkind=%x\n", pPage->iFirstPresent, pPage->cPresent, u32, pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync case PGMPOOLKIND_EPT_PT_FOR_PHYS: /* physical mask the same as PAE; RW bit as well; be careful! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMSHWPTPAE pPT = (PPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_NONE: /* No handler installed. */
6b022885f2cb6a55167609edecd89570cd80001dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_DISABLED: /* Monitoring is temporarily disabled. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync case PGM_PAGE_HNDL_PHYS_STATE_WRITE: /* Write access is monitored. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* (shouldn't be here, will assert below) */
6b022885f2cb6a55167609edecd89570cd80001dvboxsync /* Update the counter if we're removing references. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((PGMSHWPTEPAE_GET_U(pPT->a[iPte]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync if ((PGMSHWPTEPAE_GET_U(pPT->a[iPte]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P | X86_PTE_PAE_MBZ_MASK_NX)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX64\n", iPte, PGMSHWPTEPAE_GET_LOG(pPT->a[iPte])));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Pte.u = (PGMSHWPTEPAE_GET_U(pPT->a[iPte]) & u64AndMask) | u64OrMask;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Pte.n.u1Write = 0; /* need to disallow writes when dirty bit tracking is still active. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("Found %RX64 expected %RX64\n", PGMSHWPTEPAE_GET_U(pPT->a[iPte]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P | X86_PTE_PAE_MBZ_MASK_NX), u64));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0, cFound = 0; i < RT_ELEMENTS(pPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((PGMSHWPTEPAE_GET_U(pPT->a[i]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((PGMSHWPTEPAE_GET_U(pPT->a[i]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P | X86_PTE_PAE_MBZ_MASK_NX)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("iFirstPresent=%d cPresent=%d u64=%RX64 poolkind=%x iPte=%d PT=%RX64\n", pPage->iFirstPresent, pPage->cPresent, u64, pPage->enmKind, iPte, PGMSHWPTEPAE_GET_LOG(pPT->a[iPte])));
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync /* Large page case only. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PDE4M_P | X86_PDE4M_PS;
65ff326ac3915638f5c4e79c2c3e836aeeeb86devboxsync PEPTPD pPD = (PEPTPD)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPD->a[iPte].u & (EPT_PDE2M_PG_MASK | X86_PDE4M_P | X86_PDE4M_PS)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pde=%RX64\n", iPte, pPD->a[iPte]));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Update the counter as we're removing references. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0, cFound = 0; i < RT_ELEMENTS(pPD->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPD->a[i].u & (EPT_PDE2M_PG_MASK | X86_PDE4M_P | X86_PDE4M_PS)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* AMD-V nested paging */ /** @todo merge with EPT as we only check the parts that are identical. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PDE4M_P | X86_PDE4M_PS;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PD pPD = (PX86PD)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPD->a[iPte].u & (X86_PDE2M_PAE_PG_MASK | X86_PDE4M_P | X86_PDE4M_PS)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pde=%RX64\n", iPte, pPD->a[iPte]));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Update the counter as we're removing references. */
65ff326ac3915638f5c4e79c2c3e836aeeeb86devboxsync Log(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0, cFound = 0; i < RT_ELEMENTS(pPD->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPD->a[i].u & (X86_PDE2M_PAE_PG_MASK | X86_PDE4M_P | X86_PDE4M_PS)) == u64)
ba15b5303eb3e9ebd10e3d357f51335399f9d28dvboxsync AssertFatalMsgFailed(("iFirstPresent=%d cPresent=%d\n", pPage->iFirstPresent, pPage->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGM_WITH_LARGE_PAGES */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d iShw=%d\n", pPage->enmKind, iShw));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Scans one shadow page table for mappings of a physical page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPhysPage The guest page in question.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param fFlushPTEs Flush PTEs or allow them to be updated (e.g. in case of an RW bit change)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShw The shadow page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackFlushGCPhysPT(PVM pVM, PPGMPAGE pPhysPage, bool fFlushPTEs, uint16_t iShw)
bee80f3f77b15c166b7debd080a70e5231ba6751vboxsync PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool); NOREF(pPool);
65ff326ac3915638f5c4e79c2c3e836aeeeb86devboxsync /* We should only come here with when there's only one reference to this physical page. */
65ff326ac3915638f5c4e79c2c3e836aeeeb86devboxsync Assert(PGMPOOL_TD_GET_CREFS(PGM_PAGE_GET_TRACKING(pPhysPage)) == 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log2(("pgmPoolTrackFlushGCPhysPT: pPhysPage=%RHp iShw=%d\n", PGM_PAGE_GET_HCPHYS(pPhysPage), iShw));
6b022885f2cb6a55167609edecd89570cd80001dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPT, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fKeptPTEs = pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, fFlushPTEs, iShw, PGM_PAGE_GET_PTE_INDEX(pPhysPage));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPT, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes a list of shadow page tables mapping the same physical page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPhysPage The guest page in question.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param fFlushPTEs Flush PTEs or allow them to be updated (e.g. in case of an RW bit change)
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * @param iPhysExt The physical cross reference extent list to flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackFlushGCPhysPTs(PVM pVM, PPGMPAGE pPhysPage, bool fFlushPTEs, uint16_t iPhysExt)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fKeepList = false;
6b022885f2cb6a55167609edecd89570cd80001dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTs, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log2(("pgmPoolTrackFlushGCPhysPTs: pPhysPage=%RHp iPhysExt\n", PGM_PAGE_GET_HCPHYS(pPhysPage), iPhysExt));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPhysExt->aidx); i++)
bee80f3f77b15c166b7debd080a70e5231ba6751vboxsync bool fKeptPTEs = pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, fFlushPTEs, pPhysExt->aidx[i], pPhysExt->apte[i]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* insert the list into the free list and clear the ram range entry. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Invalidate the tracking data. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTs, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes all shadow page table mappings of the given guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is typically called when the host page backing the guest one has been
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * replaced or when the page protection was changed due to a guest access
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * caught by the monitoring.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if all references has been successfully cleared.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_SYNC_CR3 if we're better off with a CR3 sync and a page
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * pool cleaning. FF and sync flags are set.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysPage GC physical address of the page in question
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPhysPage The guest page in question.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param fFlushPTEs Flush PTEs or allow them to be updated (e.g. in case of an RW bit change)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pfFlushTLBs This is set to @a true if the shadow TLBs should be
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * flushed, it is NOT touched if this isn't necessary.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * The caller MUST initialized this to @a false.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolTrackUpdateGCPhys(PVM pVM, RTGCPHYS GCPhysPage, PPGMPAGE pPhysPage, bool fFlushPTEs, bool *pfFlushTLBs)
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync /* Is this page part of a large page? */
fe49486f3c0fc3c327138e9a8f9ea9911d7c0d64vboxsync if (PGM_PAGE_GET_PDE_TYPE(pPhysPage) == PGM_PAGE_PDE_TYPE_PDE)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync RTGCPHYS GCPhysBase = GCPhysPage & X86_PDE2M_PAE_PG_MASK;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Fetch the large page base. */
6f516ad9911d9037a18778742caa955fe362f8ffvboxsync pPhysBase = pgmPhysGetPage(&pVM->pgm.s, GCPhysBase);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("pgmPoolTrackUpdateGCPhys: update large page PDE for %RGp (%RGp)\n", GCPhysBase, GCPhysPage));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (PGM_PAGE_GET_PDE_TYPE(pPhysBase) == PGM_PAGE_PDE_TYPE_PDE)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Mark the large page as disabled as we need to break it up to change a single page in the 2 MB range. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PGM_PAGE_SET_PDE_TYPE(pPhysBase, PGM_PAGE_PDE_TYPE_PDE_DISABLED);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Update the base as that *only* that one has a reference and there's only one PDE to clear. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolTrackUpdateGCPhys(pVM, GCPhysBase, pPhysBase, fFlushPTEs, pfFlushTLBs);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGM_WITH_LARGE_PAGES */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint16_t u16 = PGM_PAGE_GET_TRACKING(pPhysPage);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * The zero page is currently screwing up the tracking and we'll
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * have to flush the whole shebang. Unless VBOX_WITH_NEW_LAZY_PAGE_ALLOC
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * is defined, zero pages won't normally be mapped. Some kind of solution
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * will be needed for this problem of course, but it will have to wait...
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC) /** @todo we can drop this now. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Start a subset here because pgmPoolTrackFlushGCPhysPTsSlow and
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFlushGCPhysPTs will/may kill the pool otherwise. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint32_t iPrevSubset = PGMRZDynMapPushAutoSubset(pVCpu);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (PGMPOOL_TD_GET_CREFS(u16) != PGMPOOL_TD_CREFS_PHYSEXT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else if (u16 != PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED))
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pgmPoolTrackFlushGCPhysPTs(pVM, pPhysPage, fFlushPTEs, PGMPOOL_TD_GET_IDX(u16));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolTrackFlushGCPhysPTsSlow(pVM, pPhysPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pVCpu->pgm.s.fSyncFlags |= PGM_SYNC_CLEAR_PGM_POOL;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Scans all shadow page tables for mappings of a physical page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This may be slow, but it's most likely more efficient than cleaning
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * out the entire page pool / cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if all references has been successfully cleared.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_GCPHYS_ALIASED if we're better off with a CR3 sync and
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * a page pool cleaning.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPhysPage The guest page in question.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolTrackFlushGCPhysPTsSlow(PVM pVM, PPGMPAGE pPhysPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTsSlow, s);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: cUsedPages=%d cPresent=%d pPhysPage=%R[pgmpage]\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * There is a limit to what makes sense.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: giving up... (cPresent=%d)\n", pPool->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Iterate all the pages until we've encountered all that in use.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is simple but not quite optimal solution.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P; /** @todo drop X86_PTE_P here as we always test if present separately, anyway. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint32_t u32 = u64; /** @todo move into the 32BIT_PT_xx case */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We only care about shadow page tables.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX32\n", iPage, i, pPT->a[i]));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Update the counter as we're removing references. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMSHWPTPAE pPT = (PPGMSHWPTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((PGMSHWPTEPAE_GET_U(pPT->a[i]) & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX64\n", iPage, i, pPT->a[i]));
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync PGMSHWPTEPAE_SET(pPT->a[i], 0); /// @todo why not atomic?
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync /* Update the counter as we're removing references. */
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync PEPTPT pPT = (PEPTPT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pPT->a); i++)
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync if ((pPT->a[i].u & (EPT_PTE_PG_MASK | X86_PTE_P)) == u64)
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX64\n", iPage, i, pPT->a[i]));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Update the counter as we're removing references. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
ef4275be1971a6d17d45121d075a4f41659fa6c9vboxsync * There is a limit to what makes sense. The above search is very expensive, so force a pgm pool flush.
ef4275be1971a6d17d45121d075a4f41659fa6c9vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: giving up... (cPresent=%d)\n", pPool->cPresent));
ef4275be1971a6d17d45121d075a4f41659fa6c9vboxsync * Clears the user entry in a user table.
ef4275be1971a6d17d45121d075a4f41659fa6c9vboxsync * This is used to remove all references to a page when flushing it.
ef4275be1971a6d17d45121d075a4f41659fa6c9vboxsyncstatic void pgmPoolTrackClearPageUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PCPGMPOOLUSER pUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Map the user page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pUserPage = &pPool->aPages[pUser->iUser];
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pUserPage);
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync LogFlow(("pgmPoolTrackClearPageUser: clear %x in %s (%RGp) (flushing %s)\n", iUserTable, pgmPoolPoolKindToStr(pUserPage->enmKind), pUserPage->Core.Key, pgmPoolPoolKindToStr(pPage->enmKind)));
ef4275be1971a6d17d45121d075a4f41659fa6c9vboxsync /* Safety precaution in case we change the paging for other modes too in the future. */
ef4275be1971a6d17d45121d075a4f41659fa6c9vboxsync Assert(!pgmPoolIsPageLocked(&pPool->CTX_SUFF(pVM)->pgm.s, pPage));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Some sanity checks.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync Assert(!(u.pau64[iUserTable] & PGM_PLXFLAGS_PERMANENT));
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync Assert(!(u.pau64[iUserTable] & PGM_PDFLAGS_MAPPING));
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync Assert(!(u.pau64[iUserTable] & PGM_PLXFLAGS_PERMANENT));
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync Assert(!(u.pau64[iUserTable] & PGM_PLXFLAGS_PERMANENT));
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync /* GCPhys >> PAGE_SHIFT is the index here */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync AssertMsgFailed(("enmKind=%d\n", pUserPage->enmKind));
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync#endif /* VBOX_STRICT */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Clear the entry in the user page.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync /* 32-bit entries */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync /* 64-bit entries */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * In 32 bits PAE mode we *must* invalidate the TLB when changing a
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * PDPT entry; the CPU fetches them only during cr3 load, so any
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * non-present PDPT will continue to cause page faults.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync /* no break */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync AssertFatalMsgFailed(("enmKind=%d iUser=%#x iUserTable=%#x\n", pUserPage->enmKind, pUser->iUser, pUser->iUserTable));
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync PGM_DYNMAP_UNUSED_HINT_VM(pPool->CTX_SUFF(pVM), u.pau64);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clears all users of a page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackClearPageUsers(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Free all the user records.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackClearPageUsers %RGp\n", pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Clear enter in user table. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackClearPageUser(pPool, pPage, &paUsers[i]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Free it. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Next. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Allocates a new physical cross reference extent.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the allocated extent on success. NULL if we're out of them.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param piPhysExt Where to store the phys ext index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncPPGMPOOLPHYSEXT pgmPoolTrackPhysExtAlloc(PVM pVM, uint16_t *piPhysExt)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->StamTrackPhysExtAllocFailures);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT pPhysExt = &pPool->CTX_SUFF(paPhysExts)[iPhysExt];
d86aa8a95e908fa0d5e88ed662ea0a919f17756fvboxsync * Frees a physical cross reference extent.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPhysExt The extent to free.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackPhysExtFree(PVM pVM, uint16_t iPhysExt)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT pPhysExt = &pPool->CTX_SUFF(paPhysExts)[iPhysExt];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPhysExt->aidx); i++)
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * Frees a physical cross reference extent.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPhysExt The extent to free.
10e1bc06b2908a0af56d92ffdbadd25b36a5ef61vboxsyncvoid pgmPoolTrackPhysExtFreeList(PVM pVM, uint16_t iPhysExt)
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPhysExt->aidx); i++)
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Insert a reference into a list of physical cross reference extents.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @returns The new tracking data for PGMPAGE.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @param pVM The VM handle.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @param iPhysExt The physical extent index of the list head.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @param iShwPT The shadow page table index.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @param iPte Page table entry
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic uint16_t pgmPoolTrackPhysExtInsert(PVM pVM, uint16_t iPhysExt, uint16_t iShwPT, uint16_t iPte)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* special common case. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[2] == NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackAliasedMany);
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync LogFlow(("pgmPoolTrackPhysExtInsert: %d:{,,%d pte %d}\n", iPhysExt, iShwPT, iPte));
5e9dc1c79a0a8fc61c32f6dbbe21ce385fdbebd2vboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* general treatment. */
72a925d2c24794318caf689fdee5a90dfae6a4b6vboxsync for (unsigned i = 0; i < RT_ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[i] == NIL_PGMPOOL_IDX)
5ab935df052385fd74329486db23ea63b2004b41vboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackAliasedMany);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: %d:{%d pte %d} i=%d cMax=%d\n", iPhysExt, iShwPT, iPte, i, cMax));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExtStart);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackOverflows);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: overflow (1) iShwPT=%d\n", iShwPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED);
72a925d2c24794318caf689fdee5a90dfae6a4b6vboxsync /* add another extent to the list. */
72a925d2c24794318caf689fdee5a90dfae6a4b6vboxsync PPGMPOOLPHYSEXT pNew = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
72a925d2c24794318caf689fdee5a90dfae6a4b6vboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackNoExtentsLeft);
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync LogFlow(("pgmPoolTrackPhysExtInsert: pgmPoolTrackPhysExtAlloc failed iShwPT=%d\n", iShwPT));
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: added new extent %d:{%d pte %d}->%d\n", iPhysExt, iShwPT, iPte, iPhysExtStart));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Add a reference to guest physical page where extents are in use.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The new tracking data for PGMPAGE.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPhysPage Pointer to the aPages entry in the ram range.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param u16 The ram range flags (top 16-bits).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShwPT The shadow page table index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPte Page table entry
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncuint16_t pgmPoolTrackPhysExtAddref(PVM pVM, PPGMPAGE pPhysPage, uint16_t u16, uint16_t iShwPT, uint16_t iPte)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (PGMPOOL_TD_GET_CREFS(u16) != PGMPOOL_TD_CREFS_PHYSEXT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Convert to extent list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT pPhysExt = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
6ee326f4243bcf103c001da26f5d914360b6d312vboxsync LogFlow(("pgmPoolTrackPhysExtAddref: new extent: %d:{%d, %d}\n", iPhysExt, PGMPOOL_TD_GET_IDX(u16), iShwPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackAliased);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPhysExt->apte[0] = PGM_PAGE_GET_PTE_INDEX(pPhysPage);
cea1d6e05b07cd0c9438beb30e628187e4969cffvboxsync u16 = PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u16 = PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else if (u16 != PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert into the extent list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u16 = pgmPoolTrackPhysExtInsert(pVM, PGMPOOL_TD_GET_IDX(u16), iShwPT, iPte);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->StatTrackAliasedLots);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPhysPage Pointer to the aPages entry in the ram range.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPte Shadow PTE index
5ab935df052385fd74329486db23ea63b2004b41vboxsyncvoid pgmPoolTrackPhysExtDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMPAGE pPhysPage, uint16_t iPte)
6f516ad9911d9037a18778742caa955fe362f8ffvboxsync const unsigned cRefs = PGM_PAGE_GET_TD_CREFS(pPhysPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsg(cRefs == PGMPOOL_TD_CREFS_PHYSEXT, ("cRefs=%d pPhysPage=%R[pgmpage] pPage=%p:{.idx=%d}\n", cRefs, pPhysPage, pPage, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint16_t iPhysExt = PGM_PAGE_GET_TD_IDX(pPhysPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Look for the shadow page and check if it's all freed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paPhysExts[iPhysExt].apte[i] = NIL_PGMPOOL_PHYSEXT_IDX_PTE;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (i = 0; i < RT_ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[i] != NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage] idx=%d\n", pPhysPage, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* we can free the node. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint16_t iPhysExtNext = paPhysExts[iPhysExt].iNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* lonely node */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage] idx=%d lonely\n", pPhysPage, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else if (iPhysExtPrev == NIL_PGMPOOL_PHYSEXT_INDEX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage] idx=%d head\n", pPhysPage, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PGM_PAGE_SET_TRACKING(pPhysPage, PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExtNext));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* in list */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage] idx=%d in list\n", pPhysPage, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("not-found! cRefs=%d pPhysPage=%R[pgmpage] pPage=%p:{.idx=%d}\n", cRefs, pPhysPage, pPage, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else /* nothing to do */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log2(("pgmPoolTrackPhysExtDerefGCPhys: pPhysPage=%R[pgmpage]\n", pPhysPage));
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync * Clear references to guest physical memory.
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync * This is the same as pgmPoolTracDerefGCPhys except that the guest physical address
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync * is assumed to be correct, so the linear search can be skipped and we can assert
e0b9d3c357adf9b7d05f55540e86f22943fc4b23vboxsync * at an earlier point.
26824086a3f6b36cd911058f1d9b4c0b944706fbvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The host physical address corresponding to the guest page.
d410f63700f660eab1bbf8d6e107b6b7373fee72vboxsync * @param GCPhys The guest physical address corresponding to HCPhys.
5e9dc1c79a0a8fc61c32f6dbbe21ce385fdbebd2vboxsync * @param iPte Shadow PTE index
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTracDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhys, uint16_t iPte)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Walk range list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMRAMRANGE pRam = pPool->CTX_SUFF(pVM)->pgm.s.CTX_SUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* does it match? */
3241f1be564f7351b07ce8a807673fa77a7847bcvboxsync RTHCPHYS HCPhysPage = PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log2(("pgmPoolTracDerefGCPhys %RHp vs %RHp\n", HCPhysPage, HCPhys));
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage], iPte);
41b8e304f190c3d901bcfee5e73c11bc2c42ce13vboxsync AssertFatalMsgFailed(("HCPhys=%RHp GCPhys=%RGp\n", HCPhys, GCPhys));
7e2fce486e7e2e45eb61d78ee206ba42ed89e016vboxsync * Clear references to guest physical memory.
0aeb5f500280603a51364071670efeb2617f771cvboxsync * @param pPool The pool.
0aeb5f500280603a51364071670efeb2617f771cvboxsync * @param pPage The page.
2d6f33c6a171136b87841159dee425ad4e237934vboxsync * @param HCPhys The host physical address corresponding to the guest page.
6c849982f467f6a3b6c2e01f8f7109391715c29cvboxsync * @param GCPhysHint The guest physical address which may corresponding to HCPhys.
7e2fce486e7e2e45eb61d78ee206ba42ed89e016vboxsync * @param iPte Shadow pte index
7e2fce486e7e2e45eb61d78ee206ba42ed89e016vboxsyncvoid pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint, uint16_t iPte)
41b8e304f190c3d901bcfee5e73c11bc2c42ce13vboxsync Log4(("pgmPoolTracDerefGCPhysHint %RHp %RGp\n", HCPhys, GCPhysHint));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Walk range list.
50e0e1bb8996934b3f38c117a456f825052bfb0cvboxsync PPGMRAMRANGE pRam = pPool->CTX_SUFF(pVM)->pgm.s.CTX_SUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* does it match? */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage], iPte);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync HCPhysExpected = PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Damn, the hint didn't work. We'll have to do an expensive linear search.
50e0e1bb8996934b3f38c117a456f825052bfb0cvboxsync STAM_COUNTER_INC(&pPool->StatTrackLinearRamSearches);
50e0e1bb8996934b3f38c117a456f825052bfb0cvboxsync pRam = pPool->CTX_SUFF(pVM)->pgm.s.CTX_SUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync while (iPage-- > 0)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTracDerefGCPhysHint: Linear HCPhys=%RHp GCPhysHint=%RGp GCPhysReal=%RGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync HCPhys, GCPhysHint, pRam->GCPhys + (iPage << PAGE_SHIFT)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage], iPte);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("HCPhys=%RHp GCPhysHint=%RGp (Expected HCPhys with hint = %RHp)\n", HCPhys, GCPhysHint, HCPhysExpected));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a 32-bit / 32-bit page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pGstPT The guest page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPT32Bit32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PT pShwPT, PCX86PT pGstPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPT32Bit32Bit: i=%d pte=%RX32 hint=%RX32\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK));
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK, i);
41b8e304f190c3d901bcfee5e73c11bc2c42ce13vboxsync * Clear references to guest physical memory in a PAE / 32-bit page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pGstPT The guest page table (just a half one).
750d4d0506a38b2e80c997075d40aad474e675fbvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPae32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PT pGstPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPTPae32Bit: i=%d pte=%RX64 hint=%RX32\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pGstPT->a[i].u & X86_PTE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pGstPT->a[i].u & X86_PTE_PG_MASK, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a PAE / PAE page table.
5e0e35e65847aae0955835d5c4b4e76143e580c1vboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pGstPT The guest page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT, PCX86PTPAE pGstPT)
5e0e35e65847aae0955835d5c4b4e76143e580c1vboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++)
5e0e35e65847aae0955835d5c4b4e76143e580c1vboxsync Log4(("pgmPoolTrackDerefPTPaePae: i=%d pte=%RX32 hint=%RX32\n",
5e0e35e65847aae0955835d5c4b4e76143e580c1vboxsync i, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pGstPT->a[i].u & X86_PTE_PAE_PG_MASK));
5e0e35e65847aae0955835d5c4b4e76143e580c1vboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), pGstPT->a[i].u & X86_PTE_PAE_PG_MASK, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a 32-bit / 4MB page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPT32Bit4MB(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PT pShwPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTGCPHYS GCPhys = pPage->GCPhys + PAGE_SIZE * pPage->iFirstPresent;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPT32Bit4MB: i=%d pte=%RX32 GCPhys=%RGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, GCPhys, i);
c657bea826c7455c93bd45eaebab63a4c7742c42vboxsync * Clear references to guest physical memory in a PAE / 2/4MB page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaeBig(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMSHWPTPAE pShwPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTGCPHYS GCPhys = pPage->GCPhys + PAGE_SIZE * pPage->iFirstPresent;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPTPaeBig: i=%d pte=%RX64 hint=%RGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, PGMSHWPTEPAE_GET_HCPHYS(pShwPT->a[i]), GCPhys, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to shadowed pages in an EPT page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsync * @param pShwPML4 The shadow page directory pointer table (mapping of the page).
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsyncDECLINLINE(void) pgmPoolTrackDerefPTEPT(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PEPTPT pShwPT)
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync RTGCPHYS GCPhys = pPage->GCPhys + PAGE_SIZE * pPage->iFirstPresent;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
37dd732eb95fb61d5baceacad99de39038cde38bvboxsync Log4(("pgmPoolTrackDerefPTEPT: i=%d pte=%RX64 GCPhys=%RX64\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, pShwPT->a[i].u & EPT_PTE_PG_MASK, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & EPT_PTE_PG_MASK, GCPhys, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to shadowed pages in a 32 bits page directory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPD The shadow page directory (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPD(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PD pShwPD)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
750d4d0506a38b2e80c997075d40aad474e675fbvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & X86_PDE_PG_MASK);
750d4d0506a38b2e80c997075d40aad474e675fbvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("%x\n", pShwPD->a[i].u & X86_PDE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to shadowed pages in a PAE (legacy or 64 bits) page directory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPD The shadow page directory (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPAE pShwPD)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
6ee326f4243bcf103c001da26f5d914360b6d312vboxsync Log4(("pgmPoolTrackDerefPDPae: i=%d pde=%RX64 GCPhys=%RX64\n",
6ee326f4243bcf103c001da26f5d914360b6d312vboxsync i, pShwPD->a[i].u & X86_PDE2M_PAE_PG_MASK, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPD->a[i].u & X86_PDE2M_PAE_PG_MASK, pPage->GCPhys /* == base of 2 MB page */, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & X86_PDE_PAE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
1a25adaca81841abf5e6cdfed02eaff64941357dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPD->a[i].u & X86_PDE_PAE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
750d4d0506a38b2e80c997075d40aad474e675fbvboxsync * Clear references to shadowed pages in a PAE page directory pointer table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPTPae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPT pShwPDPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < X86_PG_PAE_PDPE_ENTRIES; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & X86_PDPE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPDPT->a[i].u & X86_PDPE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to shadowed pages in a 64-bit page directory pointer table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPT64Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPT pShwPDPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPDPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!(pShwPDPT->a[i].u & PGM_PLXFLAGS_MAPPING));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & X86_PDPE_PG_MASK);
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPDPT->a[i].u & X86_PDPE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to shadowed pages in a 64-bit level 4 page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPML4 The shadow page directory pointer table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPML464Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PML4 pShwPML4)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPML4->a); i++)
0aeb5f500280603a51364071670efeb2617f771cvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPML4->a[i].u & X86_PDPE_PG_MASK);
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPML4->a[i].u & X86_PML4E_PG_MASK));
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync * Clear references to shadowed pages in an EPT page directory.
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync * @param pPool The pool.
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync * @param pPage The page.
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync * @param pShwPD The shadow page directory (mapping of the page).
0174432b2b1a760b89840ba696f7ba51def65dddvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDEPT(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PEPTPD pShwPD)
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync Log4(("pgmPoolTrackDerefPDEPT: i=%d pde=%RX64 GCPhys=%RX64\n",
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync i, pShwPD->a[i].u & X86_PDE2M_PAE_PG_MASK, pPage->GCPhys));
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPD->a[i].u & X86_PDE2M_PAE_PG_MASK, pPage->GCPhys /* == base of 2 MB page */, i);
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & EPT_PDE_PG_MASK);
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPD->a[i].u & EPT_PDE_PG_MASK));
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync * Clear references to shadowed pages in an EPT page directory pointer table.
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync * @param pPool The pool.
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync * @param pPage The page.
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
0174432b2b1a760b89840ba696f7ba51def65dddvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPTEPT(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PEPTPDPT pShwPDPT)
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPDPT->a); i++)
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & EPT_PDPTE_PG_MASK);
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPDPT->a[i].u & EPT_PDPTE_PG_MASK));
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
void *pvGst;
void *pvGst;
void *pvGst;
case PGMPOOLKIND_PAE_PD_PHYS:
case PGMPOOLKIND_32BIT_PD:
case PGMPOOLKIND_PAE_PDPT:
case PGMPOOLKIND_64BIT_PML4:
bool fFlushRequired = false;
Log(("pgmPoolFlushPage: special root page, rejected. enmKind=%s idx=%d\n", pgmPoolPoolKindToStr(pPage->enmKind), pPage->idx));
return VINF_SUCCESS;
("Can't free the shadow CR3! (%RHp vs %RHp kind=%d\n", PGMGetHyperCR3(VMMGetCpu(pVM)), pPage->Core.Key, pPage->enmKind));
Log(("pgmPoolFlushPage: current active shadow CR3, rejected. enmKind=%s idx=%d\n", pgmPoolPoolKindToStr(pPage->enmKind), pPage->idx));
return VINF_SUCCESS;
fFlushRequired = true;
if ( fFlushRequired
&& fFlush)
return rc;
#if defined(IN_RC)
/* Hack alert: we can't deal with jumps to ring 3 when called from MapCR3 and allocating pages for PAE PDs. */
#ifdef IN_RING3
return rc;
return VINF_SUCCESS;
int pgmPoolAllocEx(PVM pVM, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, PGMPOOLACCESS enmAccess, uint16_t iUser, uint32_t iUserTable,
LogFlow(("pgmPoolAlloc: GCPhys=%RGp enmKind=%s iUser=%#x iUserTable=%#x\n", GCPhys, pgmPoolPoolKindToStr(enmKind), iUser, iUserTable));
/** @todo CSAM/PGMPrefetchPage messes up here during CSAMR3CheckGates
* Assert(!(pVM->pgm.s.fGlobalSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)); */
if (fLockPage)
LogFlow(("pgmPoolAlloc: cached returns %Rrc *ppPage=%p:{.Key=%RHp, .idx=%d}\n", rc2, *ppPage, (*ppPage)->Core.Key, (*ppPage)->idx));
return rc2;
return rc;
pPool->cUsedPages++; /* physical handler registration / pgmPoolTrackFlushGCPhysPTsSlow requirement. */
return rc3;
#ifdef VBOX_WITH_STATISTICS
if (fLockPage)
LogFlow(("pgmPoolAlloc: returns %Rrc *ppPage=%p:{.Key=%RHp, .idx=%d, .fCached=%RTbool, .fMonitored=%RTbool}\n",
return rc;
PPGMPOOLPAGE pPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, HCPhys & X86_PTE_PAE_PG_MASK);
AssertFatalMsg(pPage && pPage->enmKind != PGMPOOLKIND_FREE, ("HCPhys=%RHp pPage=%p idx=%d\n", HCPhys, pPage, (pPage) ? pPage->idx : 0));
return pPage;
#ifdef IN_RING3 /* currently only used in ring 3; save some space in the R0 & GC modules (left it here as we might need it elsewhere later on) */
if (i == NIL_PGMPOOL_IDX)
case PGMPOOLKIND_64BIT_PML4:
case PGMPOOLKIND_32BIT_PD:
case PGMPOOLKIND_PAE_PDPT:
case PGMPOOLKIND_ROOT_NESTED:
case PGMPOOLKIND_PAE_PD_PHYS:
} while (i != NIL_PGMPOOL_IDX);
#ifdef IN_RING3
for (unsigned i = 0; i < cMaxUsers; i++)
pRam;
while (iPage-- > 0)
for (unsigned i = 0; i < cMaxPhysExts; i++)
#ifdef LOG_ENABLED
switch(enmKind)
case PGMPOOLKIND_INVALID:
case PGMPOOLKIND_FREE:
case PGMPOOLKIND_32BIT_PD:
case PGMPOOLKIND_PAE_PD_PHYS:
case PGMPOOLKIND_PAE_PDPT:
case PGMPOOLKIND_64BIT_PML4:
case PGMPOOLKIND_ROOT_NESTED: