PGMAllPool.cpp revision 96fb9e5765400c1ad6e462d0a25680e2312dd54c
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * PGM Shadow Page Pool.
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * additional information or have any questions.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/*******************************************************************************
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync* Header Files *
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync*******************************************************************************/
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/*******************************************************************************
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync* Internal Functions *
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync*******************************************************************************/
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind);
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint);
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser);
2daaccf68be3773aee600c5c3e48bcf5401418a6vboxsyncstatic const char *pgmPoolPoolKindToStr(uint8_t enmKind);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackFlushGCPhysPT(PVM pVM, PPGMPAGE pPhysPage, uint16_t iShw, uint16_t cRefs);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackFlushGCPhysPTs(PVM pVM, PPGMPAGE pPhysPage, uint16_t iPhysExt);
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);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Checks if the specified page pool kind is for a 4MB or 2MB guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns true if it's the shadow of a 4MB or 2MB guest page, otherwise false.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind The page kind.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(bool) pgmPoolIsBigPage(PGMPOOLKIND enmKind)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/** @def PGMPOOL_PAGE_2_LOCKED_PTR
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * Maps a pool page pool into the current context and lock it (RC only).
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * @returns VBox status code.
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * @param pVM The VM handle.
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * @param pPage The pool page.
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * @remark In RC this uses PGMGCDynMapHCPage(), so it will consume of the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * small page window employeed by that function. Be careful.
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync * @remark There is no need to assert on the result.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsyncDECLINLINE(void *) PGMPOOL_PAGE_2_LOCKED_PTR(PVM pVM, PPGMPOOLPAGE pPage)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync void *pv = pgmPoolMapPageInlined(&pVM->pgm.s, pPage);
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync /* Make sure the dynamic mapping will not be reused. */
fdea543f71872a3ec3909536a4fce37ab7aa3a8bvboxsync# define PGMPOOL_PAGE_2_LOCKED_PTR(pVM, pPage) PGMPOOL_PAGE_2_PTR(pVM, pPage)
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync/** @def PGMPOOL_UNLOCK_PTR
fdea543f71872a3ec3909536a4fce37ab7aa3a8bvboxsync * Unlock a previously locked dynamic caching (RC only).
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync * @returns VBox status code.
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * @param pVM The VM handle.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * @param pPage The pool page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark In RC this uses PGMGCDynMapHCPage(), so it will consume of the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * small page window employeed by that function. Be careful.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark There is no need to assert on the result.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsyncDECLINLINE(void) PGMPOOL_UNLOCK_PTR(PVM pVM, void *pvPage)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync# define PGMPOOL_UNLOCK_PTR(pVM, pPage) do {} while (0)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Determin the size of a write instruction.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * @returns number of bytes written.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * @param pDis The disassembler state.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsyncstatic unsigned pgmPoolDisasWriteSize(PDISCPUSTATE pDis)
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * This is very crude and possibly wrong for some opcodes,
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * but since it's not really supposed to be called we can
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * probably live with that.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * Flushes a chain of pages sharing the same access monitor.
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * @returns VBox status code suitable for scheduling.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * @param pPool The pool.
26824086a3f6b36cd911058f1d9b4c0b944706fbvboxsync * @param pPage A page in the chain.
26824086a3f6b36cd911058f1d9b4c0b944706fbvboxsyncint pgmPoolMonitorChainFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
68ef804c4ec232c58e2c03c8fc6afe3765c5c0d1vboxsync LogFlow(("pgmPoolMonitorChainFlush: Flush page %RGp type=%d\n", pPage->GCPhys, pPage->enmKind));
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * Find the list head.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Iterate the list flushing each shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Wrapper for getting the current context pointer to the entry being modified.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM Handle.
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync * @param pvDst Destination address
a11c569636fa6838bd423f4631a9660a5a84204bvboxsync * @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);
3ecf9412133496b2aeb090cfd33a286404ec59fbvboxsync * 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 pCpu The disassembler state for figuring out the write size.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This need not be specified if the caller knows we won't do cross entry accesses.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolMonitorChainChanging(PVMCPU pVCpu, PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, CTXTYPE(RTGCPTR, RTHCPTR, RTGCPTR) pvAddress, PDISCPUSTATE pCpu)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned off = GCPhysFault & PAGE_OFFSET_MASK;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned cbWrite = (pCpu) ? pgmPoolDisasWriteSize(pCpu) : 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: %RGv phys=%RGp kind=%s cbWrite=%d\n", (RTGCPTR)pvAddress, GCPhysFault, pgmPoolPoolKindToStr(pPage->enmKind), cbWrite));
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));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* page/2 sized */
8a132edc1577cbe2a19cd778c1b2bea6ae5e8515vboxsync const unsigned iShw = (off / sizeof(X86PTE)) & (X86_PG_PAE_ENTRIES - 1);
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync 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));
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync 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 if (iShwPdpt == pPage->enmKind - (unsigned)PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD)
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync for (unsigned i = 0; i < 2; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((uShw.pPDPae->a[iShw + i].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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. */
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync if ((uShw.pPDPae->a[iShw2].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShwPdpt=%#x iShw2=%#x!\n", iShwPdpt, iShw2));
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync# endif /* !IN_RING0 */
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync int rc = pgmPoolPhysSimpleReadGCPhys(pVM, &GstPte, pvAddress, GCPhysFault, sizeof(GstPte));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync Log4(("pgmPoolMonitorChainChanging pae: deref %016RX64 GCPhys %016RX64\n", uShw.pPTPae->a[iShw].u & X86_PTE_PAE_PG_MASK, GstPte.u & X86_PTE_PAE_PG_MASK));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync /* paranoia / a bit assumptive. */
806d0b554daa555364af5f87bc96eccbe760db7avboxsync 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));
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync Log4(("pgmPoolMonitorChainChanging pae: deref %016RX64 GCPhys %016RX64\n", uShw.pPTPae->a[iShw2].u & X86_PTE_PAE_PG_MASK, GstPte.u & X86_PTE_PAE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned iShw = off / sizeof(X86PTE); // ASSUMING 32-bit guest paging!
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync LogFlow(("pgmPoolMonitorChainChanging: PGMPOOLKIND_32BIT_PD %x\n", iShw));
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.StatRZGuestCR3WriteConflict));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
0e77737b0ba913683e614db11463b31ca67aacbevboxsync# endif /* !IN_RING0 */
0e77737b0ba913683e614db11463b31ca67aacbevboxsync# endif /* !IN_RING0 */
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync LogFlow(("pgmPoolMonitorChainChanging: 32 bit pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
b74ca013e5f201a2dd371e6c438433ceac12af30vboxsync /* paranoia / a bit assumptive. */
2d53f6e472561965d363674e17f48d3bdffc24d3vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PTE);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.StatRZGuestCR3WriteConflict));
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* !IN_RING0 */
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync# endif /* !IN_RING0 */
8e972b677df5ee27b99211fc7e456a5aa50f3e68vboxsync LogFlow(("pgmPoolMonitorChainChanging: 32 bit pd iShw=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPD->a[iShw2].u));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
806d0b554daa555364af5f87bc96eccbe760db7avboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX32 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync# ifdef IN_RC /* TLB load - we're pushing things a bit... */
806d0b554daa555364af5f87bc96eccbe760db7avboxsync pgmPoolFree(pVM, uShw.pPD->a[iShw].u & X86_PDE_PG_MASK, pPage->idx, iShw);
806d0b554daa555364af5f87bc96eccbe760db7avboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.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
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * 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));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* paranoia / a bit assumptive. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDEPAE);
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.StatRZGuestCR3WriteConflict));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
65eb75d34c65a45c0945358715253950d63e440cvboxsync#endif /* !IN_RING0 */
858aad6160628a88d8a273db0344fc3ba7dcc9abvboxsync# endif /* !IN_RING0 */
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync * Hopefully this doesn't happen very often:
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync * - touching unused parts of the page
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync * - messing with the bits of pd pointers without changing the physical address
6b022885f2cb6a55167609edecd89570cd80001dvboxsync /* PDPT roots are not page aligned; 32 byte only! */
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync const unsigned offPdpt = GCPhysFault - pPage->GCPhys;
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync if (iShw < X86_PG_PAE_PDPE_ENTRIES) /* don't use RT_ELEMENTS(uShw.pPDPT->a), because that's for long mode only */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.StatRZGuestCR3WriteConflict));
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected pdpt conflict at iShw=%#x!\n", iShw));
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync# endif /* !IN_RING0 */
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync# endif /* !IN_RING0 */
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPT->a[iShw].u));
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync /* paranoia / a bit assumptive. */
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync const unsigned iShw2 = (offPdpt + cbWrite - 1) / sizeof(X86PDPE);
5e797edc29f96c8367de4fbf5874171c24a89ba7vboxsync STAM_COUNTER_INC(&(pVCpu->pgm.s.StatRZGuestCR3WriteConflict));
8e8844a522f5d335f177a0313b03067d79cce201vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
7bae75e0b207aa4d4cad2a951271ad1a0e8ab9fdvboxsync# endif /* !IN_RING0 */
8e8844a522f5d335f177a0313b03067d79cce201vboxsync# endif /* !IN_RING0 */
5e797edc29f96c8367de4fbf5874171c24a89ba7vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPT->a[iShw2].u));
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync Assert(!(uShw.pPDPae->a[iShw].u & PGM_PDFLAGS_MAPPING));
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
7bae75e0b207aa4d4cad2a951271ad1a0e8ab9fdvboxsync /* paranoia / a bit assumptive. */
7bae75e0b207aa4d4cad2a951271ad1a0e8ab9fdvboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDEPAE);
03319aeaef07ef63a404237f2cb56199131f4a03vboxsync Assert(!(uShw.pPDPae->a[iShw2].u & PGM_PDFLAGS_MAPPING));
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * Hopefully this doesn't happen very often:
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * - messing with the bits of pd pointers without changing the physical address
f827fea1108b8f8a1a5f63318f6ec3cf4a9e7010vboxsync LogFlow(("pgmPoolMonitorChainChanging: pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPT->a[iShw].u));
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync pgmPoolFree(pVM, uShw.pPDPT->a[iShw].u & X86_PDPE_PG_MASK, pPage->idx, iShw);
6b022885f2cb6a55167609edecd89570cd80001dvboxsync /* paranoia / a bit assumptive. */
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync 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);
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * Hopefully this doesn't happen very often:
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync * - messing with the bits of pd pointers without changing the physical address
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync LogFlow(("pgmPoolMonitorChainChanging: pml4 iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPML4->a[iShw].u));
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync pgmPoolFree(pVM, uShw.pPML4->a[iShw].u & X86_PML4E_PG_MASK, pPage->idx, iShw);
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync /* paranoia / a bit assumptive. */
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PML4E);
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync LogFlow(("pgmPoolMonitorChainChanging: pml4 iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPML4->a[iShw2].u));
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync pgmPoolFree(pVM, uShw.pPML4->a[iShw2].u & X86_PML4E_PG_MASK, pPage->idx, iShw2);
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync#endif /* IN_RING0 */
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * Checks if a access could be a fork operation in progress.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * Meaning, that the guest is setuping up the parent process for Copy-On-Write.
8e8844a522f5d335f177a0313b03067d79cce201vboxsync * @returns true if it's likly that we're forking, otherwise false.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * @param pPool The pool.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * @param pCpu The disassembled instruction.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * @param offFault The access offset.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsyncDECLINLINE(bool) pgmPoolMonitorIsForking(PPGMPOOL pPool, PDISCPUSTATE pCpu, unsigned offFault)
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync * i386 linux is using btr to clear X86_PTE_RW.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * The functions involved are (2.6.16 source inspection):
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync * clear_bit
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * ptep_set_wrprotect
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * copy_one_pte
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * copy_pte_range
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * copy_pmd_range
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * copy_pud_range
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * copy_page_range
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * copy_process
8e8844a522f5d335f177a0313b03067d79cce201vboxsync /** @todo Validate that the bit index is X86_PTE_RW. */
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,Fork));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync return true;
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync return false;
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync * Determine whether the page is likely to have been reused.
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync * @returns true if we consider the page as being reused for a different purpose.
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync * @returns false if we consider it to still be a paging page.
35eac6afc99c1d18789ea5fe75379695aec478b9vboxsync * @param pVM VM Handle.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * @param pRegFrame Trap register frame.
35eac6afc99c1d18789ea5fe75379695aec478b9vboxsync * @param pCpu The disassembly info for the faulting instruction.
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync * @param pvFault The fault address.
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * @remark The REP prefix check is left to the caller because of STOSD/W.
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsyncDECLINLINE(bool) pgmPoolMonitorIsReused(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu, RTGCPTR pvFault)
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync /** @todo could make this general, faulting close to rsp should be safe reuse heuristic. */
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync /* Fault caused by stack writes while trying to inject an interrupt event. */
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync Log(("pgmPoolMonitorIsReused: reused %RGv for interrupt stack (rsp=%RGv).\n", pvFault, pRegFrame->rsp));
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync return true;
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync /* call implies the actual push of the return address faulted */
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync return true;
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync return true;
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync return true;
6b022885f2cb6a55167609edecd89570cd80001dvboxsync return true;
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync return true;
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync return true;
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync case OP_MOVNTDQ: /* solaris - hwblkclr & hwblkpagecopy */
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync return true;
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync return true;
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync return false;
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes the page being accessed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVCpu The VMCPU handle.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @param pPool The pool.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @param pPage The pool page (head).
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @param pCpu The disassembly of the write instruction.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @param pRegFrame The trap register frame.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @param GCPhysFault The fault address as guest physical address.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @param pvFault The fault address.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsyncstatic int pgmPoolAccessHandlerFlush(PVM pVM, PVMCPU pVCpu, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * First, do the flushing.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * Emulate the instruction (xp/w2k problem, requires pc/cr2/sp detection).
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync int rc2 = EMInterpretInstructionCPU(pVM, pVCpu, pCpu, pRegFrame, pvFault, &cbWritten);
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync if (PATMIsPatchGCAddr(pVM, (RTRCPTR)pRegFrame->eip))
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv, ignoring.\n",
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync STAM_COUNTER_INC(&pPool->StatMonitorRZIntrFailPatch2);
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,EmulateInstr));
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync /* See use in pgmPoolAccessHandlerSimple(). */
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync LogFlow(("pgmPoolAccessHandlerPT: returns %Rrc (flushed)\n", rc));
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * Handles the STOSD write accesses.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @returns VBox status code suitable for scheduling.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The pool page (head).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pCpu 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 pCpu,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
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.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint32_t iPrevSubset = PGMDynMapPushAutoSubset(pVCpu);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, (RTGCPTR)pu32, NULL);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, (RTGCPTR)pu32, NULL);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PGMPhysSimpleWriteGCPhys(pVM, GCPhysFault, &pRegFrame->eax, 4);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* See use in pgmPoolAccessHandlerSimple(). */
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * Handles the simple write accesses.
08bc90fc2848c80bf8270bedc883745b8398e186vboxsync * @returns VBox status code suitable for scheduling.
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * @param pVM The VM handle.
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * @param pVCpu The VMCPU handle.
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * @param pPool The pool.
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync * @param pPage The pool page (head).
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * @param pCpu The disassembly of the write instruction.
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync * @param pRegFrame The trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The fault address as guest physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault address.
49748bb305bd71f672cd083af208f4bb08c5d6abvboxsyncDECLINLINE(int) pgmPoolAccessHandlerSimple(PVM pVM, PVMCPU pVCpu, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
49748bb305bd71f672cd083af208f4bb08c5d6abvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
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.
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync uint32_t iPrevSubset = PGMDynMapPushAutoSubset(pVCpu);
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, pvFault, pCpu);
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync pgmPoolMonitorChainChanging(pVCpu, pPool, pPage, GCPhysFault, pvFault, pCpu);
8b984478b755f4d3091b977d9beac9fb7434279fvboxsync * Interpret the instruction.
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync int rc = EMInterpretInstructionCPU(pVM, pVCpu, pCpu, pRegFrame, pvFault, &cb);
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for %04x:%RGv - opcode=%d\n",
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync pRegFrame->cs, (RTGCPTR)pRegFrame->rip, pCpu->pCurInstr->opcode));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,EmulateInstr));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Quick hack, with logging enabled we're getting stale
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * code TLBs but no data TLB for EIP and crash in EMInterpretDisasOne.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushing here is BAD and expensive, I think EMInterpretDisasOne will
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * have to be fixed to support this. But that'll have to wait till next week.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * An alternative is to keep track of the changed PTEs together with the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * GCPhys from the guest PT. This may proove expensive though.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * At the moment, it's VITAL that it's done AFTER the instruction interpreting
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * because we need the stale TLBs in some cases (XP boot). This MUST be fixed properly!
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAccessHandlerSimple: returns %Rrc cb=%d\n", 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.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvUser User argument.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), a);
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync LogFlow(("pgmPoolAccessHandler: pvFault=%RGv pPage=%p:{.idx=%d} GCPhysFault=%RGp\n", pvFault, pPage, pPage->idx, GCPhysFault));
f02b41a7e54fc4e6b714f4e60260d94614d6e2e7vboxsync * We should ALWAYS have the list head as user parameter. This
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * is because we use that page to record the changes.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Disassemble the faulting instruction.
5b6e2c9a765c3c72295acc15791af8a700746956vboxsync int rc = EMInterpretDisasOne(pVM, pVCpu, pRegFrame, &Cpu, NULL);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (PHYS_PAGE_ADDRESS(GCPhysFault) != PHYS_PAGE_ADDRESS(pPage->GCPhys))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Pool page changed while we were waiting for the lock; ignore. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,Handled), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Check if it's worth dealing with.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fReused = false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ( ( pPage->cModifications < 48 /** @todo #define */ /** @todo need to check that it's not mapping EIP. */ /** @todo adjust this! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && !(fReused = pgmPoolMonitorIsReused(pVM, pRegFrame, &Cpu, pvFault))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && !pgmPoolMonitorIsForking(pPool, &Cpu, GCPhysFault & PAGE_OFFSET_MASK))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Simple instructions, no REP prefix.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolAccessHandlerSimple(pVM, pVCpu, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
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 && pRegFrame->ecx * 4 <= PAGE_SIZE - ((uintptr_t)pvFault & PAGE_OFFSET_MASK)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && (pRegFrame->eax == 0 || pRegFrame->eax == 0x80) /* the two values observed. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolAccessHandlerSTOSD(pVM, pPool, pPage, &Cpu, 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);
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsync /* REP prefix, don't bother. */
78a205e3fc6719d59e8c561b3d287d3a4f879852vboxsync STAM_COUNTER_INC(&pPool->CTX_MID_Z(StatMonitor,RepPrefix));
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsync Log4(("pgmPoolAccessHandler: eax=%#x ecx=%#x edi=%#x esi=%#x rip=%RGv opcode=%d prefix=%#x\n",
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync pRegFrame->eax, pRegFrame->ecx, pRegFrame->edi, pRegFrame->esi, (RTGCPTR)pRegFrame->rip, Cpu.pCurInstr->opcode, Cpu.prefix));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Not worth it, so flush it.
78a205e3fc6719d59e8c561b3d287d3a4f879852vboxsync * If we considered it to be reused, don't go back to ring-3
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * to emulate failed instructions since we usually cannot
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * interpret then. This may be a bit risky, in which case
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * the reuse detection must be fixed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolAccessHandlerFlush(pVM, pVCpu, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTX_SUFF(pPool)->CTX_SUFF_Z(StatMonitor), &pPool->CTX_MID_Z(StatMonitor,FlushPage), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* !IN_RING3 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_MONITORING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Removes a page from the GCPhys hash table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsyncDECLINLINE(void) pgmPoolHashRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsync Log3(("pgmPoolHashRemove: %RGp\n", pPage->GCPhys));
47b5427d1a541bcd269bc625c35b19d849071edfvboxsync 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)
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync 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))
0f5d1b2abd9e82c7ee46f1327287c44856604bcbvboxsync LogFlow(("pgmPoolCacheFreeOne: refuse CR3 mapping\n"));
230400db1dd754a1ab26f138a3fcb8a75f8c6a58vboxsync AssertLogRelReturn(iLoop < 8192, VERR_INTERNAL_ERROR);
6ee326f4243bcf103c001da26f5d914360b6d312vboxsync * Found a usable page, flush it and return.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* This flush was initiated by us and not the guest, so explicitly flush the TLB. */
5b6e2c9a765c3c72295acc15791af8a700746956vboxsync * 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;
79b07d7ae28b916539c6397e010a5cc05e300551vboxsync * 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;
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync * 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)
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync * @param iUser The shadow page pool index of the user table.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * @param iUserTable The index into the user table (shadowed).
b45d66c0e496e2fd861479202f3d43aad592bd14vboxsync * @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));
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync /* 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.
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync int rc = pgmPoolTrackAddUser(pPool, pPage, iUser, iUserTable);
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
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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 PGM_INVL_VCPU_TLBS(VMMGetCpu(pVM)); /* see PT handler. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync } while (i != NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheAlloc: Missed GCPhys=%RGp enmKind=%s\n", GCPhys, pgmPoolPoolKindToStr(enmKind)));
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync * Inserts a page into the cache.
e85d76a7e5a047db3cdc8576ff5f412c7b73bbabvboxsync * @param pPool The pool.
e85d76a7e5a047db3cdc8576ff5f412c7b73bbabvboxsync * @param pPage The cached page.
e85d76a7e5a047db3cdc8576ff5f412c7b73bbabvboxsync * @param fCanBeCached Set if the page is fit for caching from the caller's point of view.
e85d76a7e5a047db3cdc8576ff5f412c7b73bbabvboxsyncstatic void pgmPoolCacheInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCanBeCached)
e85d76a7e5a047db3cdc8576ff5f412c7b73bbabvboxsync * Insert into the GCPhys hash if the page is fit for that.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheInsert: Caching %p:{.Core=%RHp, .idx=%d, .enmKind=%s, GCPhys=%RGp}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), pPage->GCPhys));
8cdd041284cfe47b639146efec02846e20b67a0cvboxsync Log3(("pgmPoolCacheInsert: Not caching %p:{.Core=%RHp, .idx=%d, .enmKind=%s, GCPhys=%RGp}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), pPage->GCPhys));
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync * Insert at the head of the age list.
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync 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)
10e1bc06b2908a0af56d92ffdbadd25b36a5ef61vboxsync Log3(("pgmPoolCacheFlushPage: %RGp\n", pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove the page from the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove it from the age list.
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync pPool->aPages[pPage->iAgeNext].iAgePrev = pPage->iAgePrev;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iAgePrev].iAgeNext = pPage->iAgeNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_CACHE */
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync * Looks for pages sharing the monitor.
ec588a4ac8429a8b6c744544818b3ce3b2c75690vboxsync * @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_SIZE - 1);
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync /* find the head */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* ignore, no monitoring. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync } while (i != NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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_SIZE - 1)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Filter out the relevant kinds.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Nothing to monitor here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Nothing to monitor here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Install handler.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pPageHead = pgmPoolMonitorGetPageByGCPhys(pPool, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPageHead != pPage); Assert(pPageHead->iMonitoredNext != pPage->idx);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPageHead->iMonitoredNext].iMonitoredPrev = pPage->idx;
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX); Assert(pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync const RTGCPHYS GCPhysPage = pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1);
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 Assert(!(VMMGetCpu(pVM)->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL) || VMCPU_FF_ISSET(VMMGetCpu(pVM), VMCPU_FF_PGM_SYNC_CR3));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Disables 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 pgmPoolMonitorFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Filter out the relevant kinds.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Nothing to monitor here. */
75fca099c974cbbd48f132af1378c60232614760vboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
57f41f24b7a290eba73c63449f44017d7917561dvboxsync * Remove the page from the monitored list or uninstall it if last.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pNewHead = &pPool->aPages[pPage->iMonitoredNext];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pNewHead),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pNewHead),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerRC, MMHyperCCToRC(pVM, pNewHead),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iMonitoredPrev].iMonitoredNext = pPage->iMonitoredNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iMonitoredNext].iMonitoredPrev = pPage->iMonitoredPrev;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGMHandlerPhysicalDeregister(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1));
10e1bc06b2908a0af56d92ffdbadd25b36a5ef61vboxsync AssertMsg(!(pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL) || VMCPU_FF_ISSET(pVCpu, VMCPU_FF_PGM_SYNC_CR3),
315f443a509c31db47b8f5cb94d26e54c3d5c497vboxsync ("%#x %#x\n", pVCpu->pgm.s.fSyncFlags, pVM->fGlobalForcedActions));
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * Remove it from the list of modified pages (if in it).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Inserts the page into the list of modified pages.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsyncvoid pgmPoolMonitorModifiedInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync Log3(("pgmPoolMonitorModifiedInsert: idx=%d\n", pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync ("Next=%d Prev=%d idx=%d cModifications=%d Head=%d cModifiedPages=%d\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage->iModifiedNext, pPage->iModifiedPrev, pPage->idx, pPage->cModifications,
75fca099c974cbbd48f132af1378c60232614760vboxsync pPool->aPages[pPool->iModifiedHead].iModifiedPrev = pPage->idx;
a3db4ff1e0aa7f94c9176ef16264df572eec0aebvboxsync if (pPool->cModifiedPages > pPool->cModifiedPagesHigh)
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * Removes the page from the list of modified pages and resets the
e16fc293d8bdb6174849b7b4c6f7d9ef5f03ea83vboxsync * moficiation counter.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page which is believed to be in the list of modified pages.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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;
6b022885f2cb6a55167609edecd89570cd80001dvboxsync 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));
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Callback to clear all shadow pages and clear all modification counters.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @returns VBox status code.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @param pVM The VM handle.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @param pvUser Unused parameter
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @remark Should only be used when monitoring is available, thus placed in
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * the PGMPOOL_WITH_MONITORING #ifdef.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsyncDECLCALLBACK(int) pgmPoolClearAll(PVM pVM, void *pvUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolClearAll: cUsedPages=%d\n", pPool->cUsedPages));
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Iterate all the pages until we've encountered all that in use.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * This is simple but not quite optimal solution.
ec588a4ac8429a8b6c744544818b3ce3b2c75690vboxsync unsigned cModifiedPages = 0; NOREF(cModifiedPages);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We only care about shadow page tables.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync void *pvShw = PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* fall thru */
09d4e754a010196fe0d9d972b6ccc005ecb8b116vboxsync Assert(!pPage->cModifications || ++cModifiedPages);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX || pPage->cModifications);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX || pPage->cModifications);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* swipe the special pages too. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (iPage = PGMPOOL_IDX_FIRST_SPECIAL; iPage < PGMPOOL_IDX_FIRST; iPage++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!pPage->cModifications || ++cModifiedPages);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX || pPage->cModifications);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX || pPage->cModifications);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(cModifiedPages == pPool->cModifiedPages, ("%d != %d\n", cModifiedPages, pPool->cModifiedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear all the GCPhys links and rebuild the phys ext free list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (PPGMRAMRANGE pRam = pPool->CTX_SUFF(pVM)->pgm.s.CTX_SUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync while (iPage-- > 0)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Clear the PGM_SYNC_CLEAR_PGM_POOL flag on all VCPUs to prevent redundant flushes. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned idCpu = 0; idCpu < pVM->cCPUs; idCpu++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pVCpu->pgm.s.fSyncFlags &= ~PGM_SYNC_CLEAR_PGM_POOL;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* IN_RING3 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Handle SyncCR3 pool tasks
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync * @retval VINF_SUCCESS if successfully added.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_SYNC_CR3 is it needs to be deferred to ring 3 (GC only)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVCpu The VMCPU handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark Should only be used when monitoring is available, thus placed in
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * the PGMPOOL_WITH_MONITORING #ifdef.
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
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * sometimes refered to as a 'lightweight flush'.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# ifdef IN_RING3 /* Don't flush in ring-0 or raw mode, it's taking too long. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (ASMBitTestAndClear(&pVCpu->pgm.s.fSyncFlags, PGM_SYNC_CLEAR_PGM_POOL_BIT))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync VMMR3AtomicExecuteHandler(pVM, pgmPoolClearAll, NULL);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# else /* !IN_RING3 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pVCpu->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("SyncCR3: PGM_SYNC_CLEAR_PGM_POOL is set -> VINF_PGM_SYNC_CR3\n"));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync VMCPU_FF_SET(pVCpu, VMCPU_FF_PGM_SYNC_CR3); /** @todo no need to do global sync, right? */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* !IN_RING3 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_MONITORING */
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 * Lazy approach.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* @todo This path no longer works (CR3 root pages will be flushed)!! */
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.
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 pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The user table index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(int) pgmPoolTrackInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhys, uint16_t iUser, uint32_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackInsert GCPhys=%RGp iUser %x iUserTable %x\n", GCPhys, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Unlink the user node from the free list,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * initialize and insert it into the user list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert into cache and enable monitoring of the guest page if enabled.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Until we implement caching of all levels, including the CR3 one, we'll
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * have to make sure we don't try monitor & cache any recursive reuse of
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * a monitored CR3 page. Because all windows versions are doing this we'll
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * have to be able to do combined access monitoring, CR3 + PT and
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * PD + PT (guest PAE).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We're now cooperating with the CR3 monitor if an uncachable page is found.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if defined(PGMPOOL_WITH_MONITORING) || defined(PGMPOOL_WITH_CACHE)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const bool fCanBeMonitored = true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fCanBeMonitored = pPool->CTX_SUFF(pVM)->pgm.s.GCPhysGstCR3Monitored == NIL_RTGCPHYS
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync || (GCPhys & X86_PTE_PAE_PG_MASK) != (pPool->CTX_SUFF(pVM)->pgm.s.GCPhysGstCR3Monitored & X86_PTE_PAE_PG_MASK)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolCacheInsert(pPool, pPage, fCanBeMonitored); /* This can be expanded. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_MONITORING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# ifdef PGMPOOL_WITH_CACHE /* (only used when the cache is enabled.) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Adds a user reference to a page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This will move the page to the head of the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if successfully added.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolTrackAddUser GCPhys = %RGp iUser %x iUserTable %x\n", pPage->GCPhys, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Check that the entry doesn't already exists. We only allow multiple users of top-level paging structures (SHW_POOL_ROOT_IDX).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(iUser != PGMPOOL_IDX_PD || iUser != PGMPOOL_IDX_PDPT || iUser != PGMPOOL_IDX_NESTED_ROOT || iUser != PGMPOOL_IDX_AMD64_CR3 ||
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paUsers[i].iUser != iUser || paUsers[i].iUserTable != iUserTable, ("%x %x vs new %x %x\n", paUsers[i].iUser, paUsers[i].iUserTable, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Allocate a user node.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Initialize the user node and insert it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Tell the cache to update its replacement stats for this page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* PGMPOOL_WITH_CACHE */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a user record associated with a page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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. */
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync /* Fatal: didn't find it */
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync AssertFatalMsgFailed(("Didn't find the user entry! iUser=%#x iUserTable=%#x GCPhys=%RGp\n",
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * Gets the entry size of a shadow table.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @param enmKind The kind of page.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @returns The size of the entry in bytes. That is, 4 or 8.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * returned.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Gets the entry size of a guest table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @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)
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync /** @todo can we return 0? (nobody is calling this...) */
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync * 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.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShw The shadow page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param cRefs The number of references made in that PT.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackFlushGCPhysPTInt(PVM pVM, PCPGMPAGE pPhysPage, uint16_t iShw, uint16_t cRefs)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPT: pPhysPage=%R[pgmpage] iShw=%d cRefs=%d\n", pPhysPage, iShw, cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Assert sanity.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsg(iShw < pPool->cCurPages && iShw != NIL_PGMPOOL_IDX, ("iShw=%d\n", iShw));
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync * Then, clear the actual mappings to the page in the shadow PT.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint32_t u32 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
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(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX32 cRefs=%#x\n", i, pPT->a[i], cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
6b022885f2cb6a55167609edecd89570cd80001dvboxsync RTLogPrintf("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent));
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync PX86PTPAE pPT = (PX86PTPAE)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_PAE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX64 cRefs=%#x\n", i, pPT->a[i], cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTLogPrintf("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("cRefs=%d iFirstPresent=%d cPresent=%d u64=%RX64\n", cRefs, pPage->iFirstPresent, pPage->cPresent, u64));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
6b022885f2cb6a55167609edecd89570cd80001dvboxsync PEPTPT pPT = (PEPTPT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pPT->a); i++)
907da3b41f191bef4c8eb94accb9d16fcbe77019vboxsync if ((pPT->a[i].u & (EPT_PTE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX64 cRefs=%#x\n", i, pPT->a[i], cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTLogPrintf("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent);
8a132edc1577cbe2a19cd778c1b2bea6ae5e8515vboxsync if ((pPT->a[i].u & (EPT_PTE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent));
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.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShw The shadow page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param cRefs The number of references made in that PT.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackFlushGCPhysPT(PVM pVM, PPGMPAGE pPhysPage, uint16_t iShw, uint16_t cRefs)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOL pPool = pVM->pgm.s.CTX_SUFF(pPool); NOREF(pPool);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPT: pPhysPage=%R[pgmpage] iShw=%d cRefs=%d\n", pPhysPage, iShw, cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPT, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, iShw, cRefs);
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 iPhysExt The physical cross reference extent list to flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackFlushGCPhysPTs(PVM pVM, PPGMPAGE pPhysPage, uint16_t iPhysExt)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTs, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTs: pPhysPage=%R[pgmpage] iPhysExt\n", pPhysPage, iPhysExt));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPhysExt->aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, pPhysExt->aidx[i], 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* insert the list into the free list and clear the ram range entry. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTs, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_GCPHYS_TRACKING */
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 an access handler.
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 pPhysPage The guest page in question.
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.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The caller MUST initialized this to @a false.
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsyncint pgmPoolTrackFlushGCPhys(PVM pVM, PPGMPAGE pPhysPage, bool *pfFlushTLBs)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint16_t u16 = PGM_PAGE_GET_TRACKING(pPhysPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The zero page is currently screwing up the tracking and we'll
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * will be needed for this problem of course, but it will have to wait...
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Start a subset here because pgmPoolTrackFlushGCPhysPTsSlow and
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync pgmPoolTrackFlushGCPhysPTs will/may kill the pool otherwise. */
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync uint32_t iPrevSubset = PGMDynMapPushAutoSubset(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))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFlushGCPhysPTs(pVM, pPhysPage, PGMPOOL_TD_GET_IDX(u16));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolTrackFlushGCPhysPTsSlow(pVM, pPhysPage);
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync /* Start a subset here because pgmPoolTrackFlushGCPhysPTsSlow kill the pool otherwise. */
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync uint32_t iPrevSubset = PGMDynMapPushAutoSubset(pVCpu);
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync rc = pgmPoolTrackFlushGCPhysPTsSlow(pVM, pPhysPage);
19b725c530eb49600728765de7ed451cbe290740vboxsync pVCpu->pgm.s.fSyncFlags |= PGM_SYNC_CLEAR_PGM_POOL;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Scans all shadow page tables for mappings of a physical page.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * This may be slow, but it's most likely more efficient than cleaning
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * out the entire page pool / cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * @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.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @param pVM The VM handle.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @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",
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * There is a limit to what makes sense.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: giving up... (cPresent=%d)\n", pPool->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Iterate all the pages until we've encountered all that in use.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * This is simple but not quite optimal solution.
ec588a4ac8429a8b6c744544818b3ce3b2c75690vboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We only care about shadow page tables.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pPT->a); i++)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX32\n", iPage, i, pPT->a[i]));
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PTPAE pPT = (PX86PTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
9c425bdea5f0991df62922b1584b805a86f2f898vboxsync for (unsigned i = pPage->iFirstPresent; i < RT_ELEMENTS(pPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX64\n", iPage, i, pPT->a[i]));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clears the user entry in a user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is used to remove all references to a page when flushing it.
9c425bdea5f0991df62922b1584b805a86f2f898vboxsyncstatic void pgmPoolTrackClearPageUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PCPGMPOOLUSER pUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Map the user page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pUserPage = &pPool->aPages[pUser->iUser];
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pUserPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackClearPageUser: clear %x in %s (%RGp) (flushing %s)\n", iUserTable, pgmPoolPoolKindToStr(pUserPage->enmKind), pUserPage->Core.Key, pgmPoolPoolKindToStr(pPage->enmKind)));
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync /* Safety precaution in case we change the paging for other modes too in the future. */
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync Assert(!pgmPoolIsPageLocked(&pPool->CTX_SUFF(pVM)->pgm.s, pPage));
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync * Some sanity checks.
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync Assert(!(u.pau64[iUserTable] & PGM_PLXFLAGS_PERMANENT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!(u.pau64[iUserTable] & PGM_PDFLAGS_MAPPING));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!(u.pau64[iUserTable] & PGM_PLXFLAGS_PERMANENT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!(u.pau64[iUserTable] & PGM_PLXFLAGS_PERMANENT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* GCPhys >> PAGE_SHIFT is the index here */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsgFailed(("enmKind=%d\n", pUserPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* VBOX_STRICT */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear the entry in the user page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* 32-bit entries */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* 64-bit entries */
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync /* In 32 bits PAE mode we *must* invalidate the TLB when changing a PDPT entry; the CPU fetches them only during cr3 load, so any
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * non-present PDPT will continue to cause page faults.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* no break */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d iUser=%#x iUserTable=%#x\n", pUserPage->enmKind, pUser->iUser, pUser->iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clears all users of a page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackClearPageUsers(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync * Free all the user records.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync 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];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a physical cross reference extent.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPhysExt The extent to free.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackPhysExtFreeList(PVM pVM, uint16_t iPhysExt)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPhysExt->aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert a reference into a list of physical cross reference extents.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync * @returns The new tracking data for PGMPAGE.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPhysExt The physical extent index of the list head.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShwPT The shadow page table index.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsyncstatic uint16_t pgmPoolTrackPhysExtInsert(PVM pVM, uint16_t iPhysExt, uint16_t iShwPT)
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync /* special common case. */
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync if (paPhysExts[iPhysExt].aidx[2] == NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedMany);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtInsert: %d:{,,%d}\n", iPhysExt, iShwPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
6b022885f2cb6a55167609edecd89570cd80001dvboxsync /* general treatment. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[i] == NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedMany);
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync LogFlow(("pgmPoolTrackPhysExtInsert: %d:{%d} i=%d cMax=%d\n", iPhysExt, iShwPT, i, cMax));
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExtStart);
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync LogFlow(("pgmPoolTrackPhysExtInsert: overflow (1) iShwPT=%d\n", iShwPT));
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* add another extent to the list. */
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync PPGMPOOLPHYSEXT pNew = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync LogFlow(("pgmPoolTrackPhysExtInsert: pgmPoolTrackPhysExtAlloc failed iShwPT=%d\n", iShwPT));
2b88b28162a49c6fa769c03d56767a9806d4f456vboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED);
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync LogFlow(("pgmPoolTrackPhysExtInsert: added new extent %d:{%d}->%d\n", iPhysExt, iShwPT, iPhysExtStart));
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync return PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * Add a reference to guest physical page where extents are in use.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The new tracking data for PGMPAGE.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param u16 The ram range flags (top 16-bits).
4cad44a5f7cfa7db8d5fb255a1df3b3cd1687853vboxsync * @param iShwPT The shadow page table index.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsyncuint16_t pgmPoolTrackPhysExtAddref(PVM pVM, uint16_t u16, uint16_t iShwPT)
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync if (PGMPOOL_TD_GET_CREFS(u16) != PGMPOOL_TD_CREFS_PHYSEXT)
5db1d52ffbcaa46c3d944c6c2d9c552306817d9avboxsync * Convert to extent list.
54fe68d807196dc565de24055996e634ee40ee92vboxsync PPGMPOOLPHYSEXT pPhysExt = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
54fe68d807196dc565de24055996e634ee40ee92vboxsync LogFlow(("pgmPoolTrackPhysExtAddref: new extent: %d:{%d, %d}\n", iPhysExt, PGMPOOL_TD_GET_IDX(u16), iShwPT));
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync u16 = PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, iPhysExt);
ec588a4ac8429a8b6c744544818b3ce3b2c75690vboxsync u16 = PGMPOOL_TD_MAKE(PGMPOOL_TD_CREFS_PHYSEXT, PGMPOOL_TD_IDX_OVERFLOWED);
ec588a4ac8429a8b6c744544818b3ce3b2c75690vboxsync 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);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedLots);
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Clear references to guest physical memory.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * @param pPhysPage Pointer to the aPages entry in the ram range.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackPhysExtDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMPAGE pPhysPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned cRefs = PGM_PAGE_GET_TD_CREFS(pPhysPage);
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync AssertFatalMsg(cRefs == PGMPOOL_TD_CREFS_PHYSEXT, ("cRefs=%d pPhysPage=%R[pgmpage] pPage=%p:{.idx=%d}\n", cRefs, pPhysPage, pPage, pPage->idx));
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync uint16_t iPhysExt = PGM_PAGE_GET_TD_IDX(pPhysPage);
5db1d52ffbcaa46c3d944c6c2d9c552306817d9avboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Look for the shadow page and check if it's all freed.
2b88b28162a49c6fa769c03d56767a9806d4f456vboxsync for (unsigned i = 0; i < RT_ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync for (i = 0; i < RT_ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync if (paPhysExts[iPhysExt].aidx[i] != NIL_PGMPOOL_IDX)
5be6801527b2bb09f4b481e28d771f366961cdacvboxsync 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));
907da3b41f191bef4c8eb94accb9d16fcbe77019vboxsync 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\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));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is the same as pgmPoolTracDerefGCPhys except that the guest physical address
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * is assumed to be correct, so the linear search can be skipped and we can assert
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * at an earlier point.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The host physical address corresponding to the guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys The guest physical address corresponding to HCPhys.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTracDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Walk range list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMRAMRANGE pRam = pPool->CTX_SUFF(pVM)->pgm.s.CTX_SUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* does it match? */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncRTHCPHYS HCPhysPage = PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncLog2(("pgmPoolTracDerefGCPhys %RHp vs %RHp\n", HCPhysPage, HCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("HCPhys=%RHp GCPhys=%RGp\n", HCPhys, GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * @param pPage The page.
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * @param HCPhys The host physical address corresponding to the guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysHint The guest physical address which may corresponding to HCPhys.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTracDerefGCPhysHint %RHp %RGp\n", HCPhys, GCPhysHint));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Walk range list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Damn, the hint didn't work. We'll have to do an expensive linear search.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->StatTrackLinearRamSearches);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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",
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync HCPhys, GCPhysHint, pRam->GCPhys + (iPage << PAGE_SHIFT)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("HCPhys=%RHp GCPhysHint=%RGp\n", HCPhys, GCPhysHint));
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));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPae32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT, PCX86PT pGstPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPTPae32Bit: i=%d pte=%RX64 hint=%RX32\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a PAE / PAE 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) pgmPoolTrackDerefPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT, PCX86PTPAE pGstPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPTPaePae: i=%d pte=%RX32 hint=%RX32\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PAE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PAE_PG_MASK);
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)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync Log4(("pgmPoolTrackDerefPT32Bit4MB: i=%d pte=%RX32 GCPhys=%RGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, GCPhys);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a PAE / 2/4MB page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaeBig(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPTPaeBig: i=%d pte=%RX64 hint=%RGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, GCPhys);
6b022885f2cb6a55167609edecd89570cd80001dvboxsync#endif /* PGMPOOL_WITH_GCPHYS_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to shadowed pages in a 32 bits page directory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param pPage The page.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @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++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & X86_PDE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync 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)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & X86_PDE_PAE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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);
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
8da94e4d6813b682cdb38eb9b151ada72d91b40evboxsync 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.
6f516ad9911d9037a18778742caa955fe362f8ffvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync * @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);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @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++)
6f516ad9911d9037a18778742caa955fe362f8ffvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPML4->a[i].u & X86_PDPE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPML4->a[i].u & X86_PML4E_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 an EPT page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPML4 The shadow page directory pointer table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTEPT(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PEPTPT pShwPT)
6f516ad9911d9037a18778742caa955fe362f8ffvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync 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);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to shadowed pages in an EPT page directory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPD The shadow page directory (mapping of the page).
e4ea543752422f1139923e3e506c625b0a1827c5vboxsyncDECLINLINE(void) pgmPoolTrackDerefPDEPT(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PEPTPD pShwPD)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPD->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & EPT_PDE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPD->a[i].u & EPT_PDE_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 an EPT page directory pointer table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPTEPT(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PEPTPDPT pShwPDPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pShwPDPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & EPT_PDPTE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPDPT->a[i].u & EPT_PDPTE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * Clears all references made by this page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This includes other shadow pages and GC physical addresses.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Map the shadow page and take action according to the page kind.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync void *pvShw = PGMPOOL_PAGE_2_LOCKED_PTR(pPool->CTX_SUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTX_SUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPT32Bit32Bit(pPool, pPage, (PX86PT)pvShw, (PCX86PT)pvGst);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGM_GCPHYS_2_PTR_EX(pPool->CTX_SUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPTPae32Bit(pPool, pPage, (PX86PTPAE)pvShw, (PCX86PT)pvGst);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTX_SUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPTPaePae(pPool, pPage, (PX86PTPAE)pvShw, (PCX86PTPAE)pvGst);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync case PGMPOOLKIND_32BIT_PT_FOR_PHYS: /* treat it like a 4 MB page */
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPT32Bit4MB(pPool, pPage, (PX86PT)pvShw);
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync case PGMPOOLKIND_PAE_PT_FOR_PHYS: /* treat it like a 2 MB page */
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync pgmPoolTrackDerefPTPaeBig(pPool, pPage, (PX86PTPAE)pvShw);
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync#else /* !PGMPOOL_WITH_GCPHYS_TRACKING */
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync#endif /* !PGMPOOL_WITH_GCPHYS_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPDPae(pPool, pPage, (PX86PDPAE)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPDPTPae(pPool, pPage, (PX86PDPT)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPDPT64Bit(pPool, pPage, (PX86PDPT)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPML464Bit(pPool, pPage, (PX86PML4)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPTEPT(pPool, pPage, (PEPTPT)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPDEPT(pPool, pPage, (PEPTPD)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPDPTEPT(pPool, pPage, (PEPTPDPT)pvShw);
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync /* paranoia, clear the shadow page. Remove this laser (i.e. let Alloc and ClearAll do it). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_USER_TRACKING */
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync * Flushes a pool page.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * This moves the page to the free list after removing all user references to it.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * @returns VBox status code.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * @retval VINF_SUCCESS on success.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * @param pPool The pool.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * @param HCPhys The HC physical address of the shadow page.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsyncint pgmPoolFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync LogFlow(("pgmPoolFlushPage: pPage=%p:{.Key=%RHp, .idx=%d, .enmKind=%s, .GCPhys=%RGp}\n",
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), pPage->GCPhys));
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * Quietly reject any attempts at flushing any of the special root pages.
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync Log(("pgmPoolFlushPage: special root page, rejected. enmKind=%s idx=%d\n", pgmPoolPoolKindToStr(pPage->enmKind), pPage->idx));
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Quietly reject any attempts at flushing the currently active shadow CR3 mapping
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync AssertMsg( pPage->enmKind == PGMPOOLKIND_64BIT_PML4
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PDPT_FOR_32BIT
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PD1_FOR_32BIT_PD
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PD2_FOR_32BIT_PD
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync || pPage->enmKind == PGMPOOLKIND_PAE_PD3_FOR_32BIT_PD,
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync ("Can't free the shadow CR3! (%RHp vs %RHp kind=%d\n", PGMGetHyperCR3(VMMGetCpu(pVM)), pPage->Core.Key, pPage->enmKind));
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync Log(("pgmPoolFlushPage: current active shadow CR3, rejected. enmKind=%s idx=%d\n", pgmPoolPoolKindToStr(pPage->enmKind), pPage->idx));
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync /* Start a subset so we won't run out of mapping space. */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync uint32_t iPrevSubset = PGMDynMapPushAutoSubset(pVCpu);
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Mark the page as being in need of a ASMMemZeroPage().
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Clear the page.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Flush it from the cache.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync#endif /* PGMPOOL_WITH_CACHE */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync /* Heavy stuff done. */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Deregistering the monitoring.
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync * Free the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a usage of a pool page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The caller is responsible to updating the user table so that it no longer
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * references the shadow page.
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).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolFreeByPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolFreeByPage: pPage=%p:{.Key=%RHp, .idx=%d, enmKind=%s} iUser=%#x iUserTable=%#x\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pgmPoolPoolKindToStr(pPage->enmKind), iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pPage, iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Makes one or more free page free.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @param enmKind Page table kind
d86aa8a95e908fa0d5e88ed662ea0a919f17756fvboxsync * @param iUser The user of the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolMakeMoreFreePages(PPGMPOOL pPool, PGMPOOLKIND enmKind, uint16_t iUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMakeMoreFreePages: iUser=%#x\n", iUser));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * If the pool isn't full grown yet, expand it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Hack alert: we can't deal with jumps to ring 3 when called from MapCR3 and allocating pages for PAE PDs. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && (enmKind < PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD || enmKind > PGMPOOLKIND_PAE_PD3_FOR_32BIT_PD)
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync int rc = CTXALLMID(VMM, CallHost)(pVM, VMMCALLHOST_PGM_POOL_GROW, 0);
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync * Free one cached page.
db548661809056af7b58115fdcf6077043d13863vboxsync * Flush the pool.
9c425bdea5f0991df62922b1584b805a86f2f898vboxsync * If we have tracking enabled, it should be possible to come up with
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync * a cheap replacement strategy...
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* @todo This path no longer works (CR3 root pages will be flushed)!! */
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Allocates a page from the pool.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * This page may actually be a cached page and not in need of any processing
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * on the callers part.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @returns VBox status code.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @retval VINF_SUCCESS if a NEW page was allocated.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @retval VINF_PGM_CACHED_PAGE if a CACHED page was returned.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * For 4MB and 2MB PD entries, it's the first address the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * shadow PT is covering.
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. NULL is stored here on failure.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolAllocEx(PVM pVM, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, PGMPOOLACCESS enmAccess, uint16_t iUser, uint32_t iUserTable, PPPGMPOOLPAGE ppPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAlloc: GCPhys=%RGp enmKind=%s iUser=%#x iUserTable=%#x\n", GCPhys, pgmPoolPoolKindToStr(enmKind), iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo CSAM/PGMPrefetchPage messes up here during CSAMR3CheckGates
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * (TRPMR3SyncIDT) because of FF priority. Try fix that?
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Assert(!(pVM->pgm.s.fGlobalSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)); */
f3c0757250e08fe6b4890aee39c38c5688715682vboxsync int rc2 = pgmPoolCacheAlloc(pPool, GCPhys, enmKind, enmAccess, iUser, iUserTable, ppPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAlloc: cached returns %Rrc *ppPage=%p:{.Key=%RHp, .idx=%d}\n", rc2, *ppPage, (*ppPage)->Core.Key, (*ppPage)->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Allocate a new one.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolMakeMoreFreePages(pPool, enmKind, iUser);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertReleaseReturn(iNew != NIL_PGMPOOL_IDX, VERR_INTERNAL_ERROR);
68ef804c4ec232c58e2c03c8fc6afe3765c5c0d1vboxsync /* unlink the free head */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Initialize it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->cUsedPages++; /* physical handler registration / pgmPoolTrackFlushGCPhysPTsSlow requirement. */
ec588a4ac8429a8b6c744544818b3ce3b2c75690vboxsync pPage->fSeenNonGlobal = false; /* Set this to 'true' to disable this feature. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert into the tracking and cache. If this fails, free the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc3 = pgmPoolTrackInsert(pPool, pPage, GCPhys, iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("pgmPoolAlloc: returns %Rrc (Insert)\n", rc3));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_USER_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Commit the allocation, clear the page and return.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAlloc: returns %Rrc *ppPage=%p:{.Key=%RHp, .idx=%d, .fCached=%RTbool, .fMonitored=%RTbool}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc, pPage, pPage->Core.Key, pPage->idx, pPage->fCached, pPage->fMonitored));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a usage of a pool page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
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).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolFree(PVM pVM, RTHCPHYS HCPhys, uint16_t iUser, uint32_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolFree: HCPhys=%RHp iUser=%#x iUserTable=%#x\n", HCPhys, iUser, iUserTable));
6ee326f4243bcf103c001da26f5d914360b6d312vboxsync pgmPoolFreeByPage(pPool, pgmPoolGetPage(pPool, HCPhys), iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Internal worker for finding a 'in-use' shadow page give by it's physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the shadow page structure.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The HC physical address of the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncPPGMPOOLPAGE pgmPoolGetPage(PPGMPOOL pPool, RTHCPHYS HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Look up the page.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync PPGMPOOLPAGE pPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, HCPhys & X86_PTE_PAE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsg(pPage && pPage->enmKind != PGMPOOLKIND_FREE, ("HCPhys=%RHp pPage=%p idx=%d\n", HCPhys, pPage, (pPage) ? pPage->idx : 0));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes the entire cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * It will assert a global CR3 flush (FF) and assumes the caller is aware of this
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * and execute this CR3 flush.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * If there are no pages in the pool, there is nothing to do.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Exit the shadow mode since we're going to clear everything,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * including the root page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Nuke the free list and reinsert all pages into it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPool->cCurPages - 1; i >= PGMPOOL_IDX_FIRST; i--)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->Core.Key == MMPage2Phys(pVM, pPage->pvPageR3));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage->fZeroed = false; /* This could probably be optimized, but better safe than sorry. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPool->cCurPages - 1].iNext = NIL_PGMPOOL_IDX;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Zap and reinitialize the user records.
26824086a3f6b36cd911058f1d9b4c0b944706fbvboxsync for (unsigned i = 0; i < cMaxUsers; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paUsers[cMaxUsers - 1].iNext = NIL_PGMPOOL_USER_INDEX;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear all the GCPhys links and rebuild the phys ext free list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (PPGMRAMRANGE pRam = pVM->pgm.s.CTX_SUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync while (iPage-- > 0)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTX_SUFF(paPhysExts);
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
1b7f3a92e42fb9cabf96cf31c20481da466edf76vboxsync * Just zap the modified list.
0aeb5f500280603a51364071670efeb2617f771cvboxsync * Clear the GCPhys hash and the age list.
0aeb5f500280603a51364071670efeb2617f771cvboxsync for (unsigned i = 0; i < RT_ELEMENTS(pPool->aiHash); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Reinsert active pages into the hash and ensure monitoring chains are correct.
50e0e1bb8996934b3f38c117a456f825052bfb0cvboxsync for (unsigned i = PGMPOOL_IDX_FIRST_SPECIAL; i < PGMPOOL_IDX_FIRST; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* ASSUMES that we're not sharing with any of the other special pages (safe for now). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerRC, MMHyperCCToRC(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iUserHead == NIL_PGMPOOL_USER_INDEX); /* for now */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Re-enter the shadowing mode and assert Sync CR3 FF.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* IN_RING3 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic const char *pgmPoolPoolKindToStr(uint8_t enmKind)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_INVALID";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_FREE";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_32BIT_PT_FOR_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_32BIT_PT_FOR_32BIT_PT";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_32BIT_PT_FOR_32BIT_4MB";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PT_FOR_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PT_FOR_32BIT_PT";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PT_FOR_32BIT_4MB";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PT_FOR_PAE_PT";
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync return "PGMPOOLKIND_PAE_PT_FOR_PAE_2MB";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_32BIT_PD";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_32BIT_PD_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PD0_FOR_32BIT_PD";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PD1_FOR_32BIT_PD";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PD2_FOR_32BIT_PD";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PD3_FOR_32BIT_PD";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PD_FOR_PAE_PD";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PD_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PDPT_FOR_32BIT";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PDPT";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_PAE_PDPT_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_64BIT_PDPT_FOR_64BIT_PDPT";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_64BIT_PDPT_FOR_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_64BIT_PD_FOR_64BIT_PD";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_64BIT_PD_FOR_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_64BIT_PML4";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_EPT_PDPT_FOR_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_EPT_PD_FOR_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_EPT_PT_FOR_PHYS";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "PGMPOOLKIND_ROOT_NESTED";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return "Unknown kind!";
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* LOG_ENABLED*/