PGMAllPool.cpp revision 46df4404c8dbbf3672e7aae8cd0b2770356e5b73
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*******************************************************************************/
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind);
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind);
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint16_t iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser);
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 * Maps a pool page into the current context.
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync * @returns Pointer to the mapping.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page to map.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* general pages. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->idx < pVM->pgm.s.pPoolGC->cCurPages);
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync int rc = PGMGCDynMapHCPage(pVM, pPage->Core.Key, &pv);
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync /* special pages. */
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync AssertReleaseMsgFailed(("Invalid index %d\n", pPage->idx));
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync#endif /* IN_GC */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Determin the size of a write instruction.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * @returns number of bytes written.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * @param pDis The disassembler state.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsyncstatic unsigned pgmPoolDisasWriteSize(PDISCPUSTATE pDis)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * This is very crude and possibly wrong for some opcodes,
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * but since it's not really supposed to be called we can
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * probably live with that.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Flushes a chain of pages sharing the same access monitor.
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * @returns VBox status code suitable for scheduling.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * @param pPool The pool.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * @param pPage A page in the chain.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsyncint pgmPoolMonitorChainFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync LogFlow(("pgmPoolMonitorChainFlush: Flush page %VGp type=%d\n", pPage->GCPhys, pPage->enmKind));
726fc44ad0bd65a178ad4c3ab46ebd6cd3208e99vboxsync * Find the list head.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Itereate the list flushing each shadow page.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync if (rc2 == VERR_PGM_POOL_CLEARED && rc == VINF_SUCCESS)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Wrapper for getting the current context pointer to the entry being modified.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the current context mapping of the entry.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault virtual address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The fault physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param cbEntry The entry size.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(const void *) pgmPoolMonitorGCPtr2CCPtr(PPGMPOOL pPool, RTHCPTR pvFault, RTGCPHYS GCPhysFault, const unsigned cbEntry)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(const void *) pgmPoolMonitorGCPtr2CCPtr(PPGMPOOL pPool, RTGCPTR pvFault, RTGCPHYS GCPhysFault, const unsigned cbEntry)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return (const void *)((RTGCUINTPTR)pvFault & ~(RTGCUINTPTR)(cbEntry - 1));
a11c569636fa6838bd423f4631a9660a5a84204bvboxsync int rc = pgmRamGCPhys2HCPtr(&pPool->pVMHC->pgm.s, GCPhysFault & ~(RTGCPHYS)(cbEntry - 1), &pvRet);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return (RTHCPTR)((uintptr_t)pvFault & ~(RTHCUINTPTR)(cbEntry - 1));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Process shadow entries before they are changed by the guest.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * For PT entries we will clear them. For PD entries, we'll simply check
3ecf9412133496b2aeb090cfd33a286404ec59fbvboxsync * for mapping conflicts and set the SyncCR3 FF if found.
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(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, RTHCPTR pvAddress, PDISCPUSTATE pCpu)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolMonitorChainChanging(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, RTGCPTR pvAddress, PDISCPUSTATE pCpu)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned off = GCPhysFault & PAGE_OFFSET_MASK;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: %VGv phys=%VGp kind=%d\n", pvAddress, GCPhysFault, pPage->enmKind));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync uShw.pv = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
6b022885f2cb6a55167609edecd89570cd80001dvboxsync PCX86PTE pGstPte = (PCX86PTE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync Log4(("pgmPoolMonitorChainChanging 32_32: deref %VHp GCPhys %VGp\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, pGstPte->u & X86_PTE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* page/2 sized */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned iShw = (off / sizeof(X86PTE)) & (X86_PG_PAE_ENTRIES - 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCX86PTE pGstPte = (PCX86PTE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolMonitorChainChanging pae_32: deref %VHp GCPhys %VGp\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, pGstPte->u & X86_PTE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCX86PTEPAE pGstPte = (PCX86PTEPAE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolMonitorChainChanging pae_32: deref %VHp GCPhys %VGp\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, pGstPte->u & X86_PTE_PAE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned iShw = off / sizeof(X86PTE); // ASSUMING 32-bit guest paging!
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* paranoia / a bit assumptive. */
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync const unsigned iShw2 = (off + pgmPoolDisasWriteSize(pCpu) - 1) / sizeof(X86PTE);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
79b07d7ae28b916539c6397e010a5cc05e300551vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX32 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPD->a[iShw].u & X86_PDE_PG_MASK, pPage->idx, iShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync unsigned iShw = (off / sizeof(X86PTE)) * 2; // ASSUMING 32-bit guest paging!
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((uShw.pPDPae->a[iShw].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* paranoia / a bit assumptive. */
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync && (uShw.pPDPae->a[iShw2].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
1843553dbdf4e46417158b4c6348c503adf10740vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
1843553dbdf4e46417158b4c6348c503adf10740vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPDPae->a[iShw].u & X86_PDE_PAE_PG_MASK, pPage->idx, iShw);
1843553dbdf4e46417158b4c6348c503adf10740vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
ebbb1f6c7e8bae363a4efda4b35b58c8467d24bcvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync /* paranoia / a bit assumptive. */
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync && (off & 7) + pgmPoolDisasWriteSize(pCpu) > sizeof(X86PTEPAE))
1843553dbdf4e46417158b4c6348c503adf10740vboxsync const unsigned iShw2 = (off + pgmPoolDisasWriteSize(pCpu) - 1) / sizeof(X86PTEPAE);
1843553dbdf4e46417158b4c6348c503adf10740vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
806d0b554daa555364af5f87bc96eccbe760db7avboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
1843553dbdf4e46417158b4c6348c503adf10740vboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
1843553dbdf4e46417158b4c6348c503adf10740vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX32 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
1843553dbdf4e46417158b4c6348c503adf10740vboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
1843553dbdf4e46417158b4c6348c503adf10740vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShwpPDPae->a[iShw].u & X86_PDE_PG_MASK, pPage->idx, iShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Hopefully this doesn't happen very often:
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * - touching unused parts of the page
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * - messing with the bits of pd pointers without changing the physical address
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (iShw < X86_PG_PAE_PDPE_ENTRIES) /* don't use ELEMENTS(uShw.pPDPT->a), because that's for long mode only */
79b07d7ae28b916539c6397e010a5cc05e300551vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* paranoia / a bit assumptive. */
0e77737b0ba913683e614db11463b31ca67aacbevboxsync && (off & 7) + pgmPoolDisasWriteSize(pCpu) > sizeof(X86PDPE))
0e77737b0ba913683e614db11463b31ca67aacbevboxsync const unsigned iShw2 = (off + pgmPoolDisasWriteSize(pCpu) - 1) / sizeof(X86PDPE);
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
2d53f6e472561965d363674e17f48d3bdffc24d3vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
2d53f6e472561965d363674e17f48d3bdffc24d3vboxsync /* Hopefully this doesn't happen very often:
2d53f6e472561965d363674e17f48d3bdffc24d3vboxsync * - messing with the bits of pd pointers without changing the physical address
0e77737b0ba913683e614db11463b31ca67aacbevboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPT->a[iShw].u));
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPDPT->a[iShw].u & X86_PDE_PAE_PG_MASK, pPage->idx, iShw);
8e972b677df5ee27b99211fc7e456a5aa50f3e68vboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * Checks if a access could be a fork operation in progress.
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * Meaning, that the guest is setuping up the parent process for Copy-On-Write.
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * @returns true if it's likly that we're forking, otherwise false.
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * @param pPool The pool.
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * @param pCpu The disassembled instruction.
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * @param offFault The access offset.
806d0b554daa555364af5f87bc96eccbe760db7avboxsyncDECLINLINE(bool) pgmPoolMonitorIsForking(PPGMPOOL pPool, PDISCPUSTATE pCpu, unsigned offFault)
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * i386 linux is using btr to clear X86_PTE_RW.
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * The functions involved are (2.6.16 source inspection):
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * clear_bit
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * ptep_set_wrprotect
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync * copy_one_pte
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * copy_pte_range
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * copy_pmd_range
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * copy_pud_range
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * copy_page_range
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * copy_process
806d0b554daa555364af5f87bc96eccbe760db7avboxsync /** @todo Validate that the bit index is X86_PTE_RW. */
806d0b554daa555364af5f87bc96eccbe760db7avboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,Fork));
806d0b554daa555364af5f87bc96eccbe760db7avboxsync return true;
806d0b554daa555364af5f87bc96eccbe760db7avboxsync return false;
806d0b554daa555364af5f87bc96eccbe760db7avboxsync * Determin whether the page is likely to have been reused.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns true if we consider the page as being reused for a different purpose.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns false if we consider it to still be a paging page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page in question.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pCpu The disassembly info for the faulting insturction.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * @param pvFault The fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark The REP prefix check is left to the caller because of STOSD/W.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(bool) pgmPoolMonitorIsReused(PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu, RTGCPTR pvFault)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
533ffcb943c4af2c5fe6385d816d0ba3eda9383bvboxsync return true;
858aad6160628a88d8a273db0344fc3ba7dcc9abvboxsync return true;
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync return true;
858aad6160628a88d8a273db0344fc3ba7dcc9abvboxsync return true;
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync case OP_MOVNTDQ: /* solaris - hwblkclr & hwblkpagecopy */
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync return true;
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync return true;
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync //if (pPage->fCR3Mix)
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync // return false;
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync return false;
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * Flushes the page being accessed.
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync * @param pPage The pool page (head).
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * @param pCpu The disassembly of the write instruction.
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync * @param pRegFrame The trap register frame.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync * @param GCPhysFault The fault address as guest physical address.
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync * @param pvFault The fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolAccessHandlerFlush(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
440444d68cda7866c59e2e3d3f236608ef1c316fvboxsync * First, do the flushing.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Emulate the instruction (xp/w2k problem, requires pc/cr2/sp detection).
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync int rc2 = EMInterpretInstructionCPU(pVM, pCpu, pRegFrame, pvFault, &cbWritten);
86b687e7808a36be33c43ae58adc8ab22d378feavboxsync if (PATMIsPatchGCAddr(pVM, (RTRCPTR)pRegFrame->eip))
806d0b554daa555364af5f87bc96eccbe760db7avboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv, ignoring.\n",
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync STAM_COUNTER_INC(&pPool->StatMonitorGCIntrFailPatch2);
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,EmulateInstr));
7bae75e0b207aa4d4cad2a951271ad1a0e8ab9fdvboxsync /* See use in pgmPoolAccessHandlerSimple(). */
7bae75e0b207aa4d4cad2a951271ad1a0e8ab9fdvboxsync LogFlow(("pgmPoolAccessHandlerPT: returns %Vrc (flushed)\n", rc));
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * Handles the STOSD write accesses.
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync * @returns VBox status code suitable for scheduling.
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * @param pVM The VM handle.
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * @param pPool The pool.
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync * @param pPage The pool page (head).
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync * @param pCpu The disassembly of the write instruction.
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync * @param pRegFrame The trap register frame.
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * @param GCPhysFault The fault address as guest physical address.
5e797edc29f96c8367de4fbf5874171c24a89ba7vboxsync * @param pvFault The fault address.
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsyncDECLINLINE(int) pgmPoolAccessHandlerSTOSD(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
86b687e7808a36be33c43ae58adc8ab22d378feavboxsync * Increment the modification counter and insert it into the list
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync * of modified pages the first time.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * Execute REP STOSD.
7bae75e0b207aa4d4cad2a951271ad1a0e8ab9fdvboxsync * This ASSUMES that we're not invoked by Trap0e on in a out-of-sync
7bae75e0b207aa4d4cad2a951271ad1a0e8ab9fdvboxsync * write situation, meaning that it's safe to write here.
9a12d720d4db6c26d09600ddab781ad8df5e1826vboxsync pgmPoolMonitorChainChanging(pPool, pPage, GCPhysFault, (RTGCPTR)pu32, NULL);
03319aeaef07ef63a404237f2cb56199131f4a03vboxsync PGMPhysWriteGCPhys(pVM, GCPhysFault, &pRegFrame->eax, 4);
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync /* See use in pgmPoolAccessHandlerSimple(). */
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * Handles the simple write accesses.
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * @returns VBox status code suitable for scheduling.
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * @param pVM The VM handle.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync * @param pPool The pool.
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * @param pPage The pool page (head).
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * @param pCpu The disassembly of the write instruction.
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync * @param pRegFrame The trap register frame.
f827fea1108b8f8a1a5f63318f6ec3cf4a9e7010vboxsync * @param GCPhysFault The fault address as guest physical address.
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync * @param pvFault The fault address.
86b687e7808a36be33c43ae58adc8ab22d378feavboxsyncDECLINLINE(int) pgmPoolAccessHandlerSimple(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
6b022885f2cb6a55167609edecd89570cd80001dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync * Increment the modification counter and insert it into the list
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * of modified pages the first time.
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * Clear all the pages. ASSUMES that pvFault is readable.
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync pgmPoolMonitorChainChanging(pPool, pPage, GCPhysFault, pvFault, pCpu);
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * Interpret the instruction.
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync int rc = EMInterpretInstructionCPU(pVM, pCpu, pRegFrame, pvFault, &cb);
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv - opcode=%d\n",
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync pRegFrame->cs, (RTGCPTR)pRegFrame->eip, pCpu->pCurInstr->opcode));
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,EmulateInstr));
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * Quick hack, with logging enabled we're getting stale
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * code TLBs but no data TLB for EIP and crash in EMInterpretDisasOne.
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * Flushing here is BAD and expensive, I think EMInterpretDisasOne will
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * have to be fixed to support this. But that'll have to wait till next week.
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * An alternative is to keep track of the changed PTEs together with the
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * GCPhys from the guest PT. This may proove expensive though.
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * At the moment, it's VITAL that it's done AFTER the instruction interpreting
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync * because we need the stale TLBs in some cases (XP boot). This MUST be fixed properly!
6f0193f5a9287559d34a75f438c2682d8fb08038vboxsync LogFlow(("pgmPoolAccessHandlerSimple: returns %Vrc cb=%d\n", rc, cb));
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync * \#PF Handler callback for PT write accesses.
7e960d3a0a8a3a84d7aba2cca45d72b1c31cc97bvboxsync * @returns VBox status code (appropriate for GC return).
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * @param pVM VM Handle.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * @param uErrorCode CPU Error code.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync * @param pRegFrame Trap register frame.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * NULL on DMA and other non CPU access.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * @param pvFault The fault address (cr2).
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * @param GCPhysFault The GC physical address corresponding to pvFault.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * @param pvUser User argument.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser)
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync STAM_PROFILE_START(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), a);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync LogFlow(("pgmPoolAccessHandler: pvFault=%VGv pPage=%p:{.idx=%d} GCPhysFault=%VGp\n", pvFault, pPage, pPage->idx, GCPhysFault));
8e8844a522f5d335f177a0313b03067d79cce201vboxsync * We should ALWAYS have the list head as user parameter. This
8e8844a522f5d335f177a0313b03067d79cce201vboxsync * is because we use that page to record the changes.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * Disassemble the faulting instruction.
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync int rc = EMInterpretDisasOne(pVM, pRegFrame, &Cpu, NULL);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * Check if it's worth dealing with.
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync bool fReused = false;
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync if ( ( pPage->cModifications < 48 /** @todo #define */ /** @todo need to check that it's not mapping EIP. */ /** @todo adjust this! */
6b022885f2cb6a55167609edecd89570cd80001dvboxsync && !(fReused = pgmPoolMonitorIsReused(pPage, &Cpu, pvFault))
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync && !pgmPoolMonitorIsForking(pPool, &Cpu, GCPhysFault & PAGE_OFFSET_MASK))
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * Simple instructions, no REP prefix.
8e8844a522f5d335f177a0313b03067d79cce201vboxsync rc = pgmPoolAccessHandlerSimple(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
8e8844a522f5d335f177a0313b03067d79cce201vboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,Handled), a);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * Windows is frequently doing small memset() operations (netio test 4k+).
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * We have to deal with these or we'll kill the cache and performance.
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync && pRegFrame->ecx * 4 <= PAGE_SIZE - ((uintptr_t)pvFault & PAGE_OFFSET_MASK)
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync && (pRegFrame->eax == 0 || pRegFrame->eax == 0x80) /* the two values observed. */
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync rc = pgmPoolAccessHandlerSTOSD(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,RepStosd), a);
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync /* REP prefix, don't bother. */
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,RepPrefix));
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync Log4(("pgmPoolAccessHandler: eax=%#x ecx=%#x edi=%#x esi=%#x eip=%#x opcode=%d prefix=%#x\n",
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync pRegFrame->eax, pRegFrame->ecx, pRegFrame->edi, pRegFrame->esi, pRegFrame->eip, Cpu.pCurInstr->opcode, Cpu.prefix));
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * Not worth it, so flush it.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * If we considered it to be reused, don't to back to ring-3
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * to emulate failed instructions since we usually cannot
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * interpret then. This may be a bit risky, in which case
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync * the reuse detection must be fixed.
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync rc = pgmPoolAccessHandlerFlush(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
5db1d52ffbcaa46c3d944c6c2d9c552306817d9avboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,FlushPage), a);
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync# endif /* !IN_RING3 */
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync#endif /* PGMPOOL_WITH_MONITORING */
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * Inserts a page into the GCPhys hash table.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @param pPool The pool.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @param pPage The page.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsyncDECLINLINE(void) pgmPoolHashInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync Log3(("pgmPoolHashInsert: %VGp\n", pPage->GCPhys));
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync Assert(pPage->GCPhys != NIL_RTGCPHYS); Assert(pPage->iNext == NIL_PGMPOOL_IDX);
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * Removes a page from the GCPhys hash table.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @param pPool The pool.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * @param pPage The page.
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsyncDECLINLINE(void) pgmPoolHashRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync Log3(("pgmPoolHashRemove: %VGp\n", pPage->GCPhys));
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync AssertReleaseMsgFailed(("GCPhys=%VGp idx=%#x\n", pPage->GCPhys, pPage->idx));
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * Frees up one cache page.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @returns VBox status code.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @retval VINF_SUCCESS on success.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of a physical handler will cause a light weight pool flush.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @param pPool The pool.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * @param iUser The user index.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsyncstatic int pgmPoolCacheFreeOne(PPGMPOOL pPool, uint16_t iUser)
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync Assert(pPool->iAgeHead != pPool->iAgeTail); /* We shouldn't be here if there < 2 cached entries! */
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync * Select one page from the tail of the age list.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync/* This is the alternative to the SyncCR3 pgmPoolCacheUsed calls.
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync if (pPool->aPages[iToFree].iUserHead != NIL_PGMPOOL_USER_INDEX)
b11ac4688040111be12593967e11c0e83baa7131vboxsync uint16_t i = pPool->aPages[iToFree].iAgePrev;
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync for (unsigned j = 0; j < 10 && i != NIL_PGMPOOL_USER_INDEX; j++, i = pPool->aPages[i].iAgePrev)
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync if (pPool->aPages[iToFree].iUserHead == NIL_PGMPOOL_USER_INDEX)
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync iToFree = i;
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync int rc = pgmPoolFlushPage(pPool, &pPool->aPages[iToFree]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Checks if a kind mismatch is really a page being reused
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * or if it's just normal remappings.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns true if reused and the cached page (enmKind1) should be flushed
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns false if not reused.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind1 The kind of the cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind2 The kind of the requested page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic bool pgmPoolCacheReusedByKind(PGMPOOLKIND enmKind1, PGMPOOLKIND enmKind2)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Never reuse them. There is no remapping in non-paging mode.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync return true;
08bc90fc2848c80bf8270bedc883745b8398e186vboxsync return false;
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync * These cannot be flushed, and it's common to reuse the PDs as PTs.
49748bb305bd71f672cd083af208f4bb08c5d6abvboxsync 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.
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync * @param enmKind The kind of mapping.
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync * @param iUser The shadow page pool index of the user table.
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync * @param iUserTable The index into the user table (shadowed).
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync * @param ppPage Where to store the pointer to the page.
7c3417bbf525c03163d54d151a277a981d5d61b6vboxsyncstatic int pgmPoolCacheAlloc(PPGMPOOL pPool, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, uint16_t iUser, uint16_t iUserTable, PPPGMPOOLPAGE ppPage)
51d4024e2984de499ecd878341898f71f55cf9e0vboxsync * Look up the GCPhys in the hash.
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync Log3(("pgmPoolCacheAlloc: %VGp kind %d iUser=%d iUserTable=%x SLOT=%d\n", GCPhys, enmKind, iUser, iUserTable, i));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheAlloc: slot %d found page %VGp\n", i, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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 pgmPoolFlushPage(pPool, pPage); /* ASSUMES that VERR_PGM_POOL_CLEARED will be returned by pgmPoolTracInsert. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync } while (i != NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheAlloc: Missed GCPhys=%RGp enmKind=%d\n", GCPhys, enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Inserts a page into the cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
5b6e2c9a765c3c72295acc15791af8a700746956vboxsync * @param fCanBeCached Set if the page is fit for caching from the caller's point of view.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolCacheInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCanBeCached)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert into the GCPhys hash if the page is fit for that.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheInsert: Caching %p:{.Core=%RHp, .idx=%d, .enmKind=%d, GCPhys=%RGp}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheInsert: Not caching %p:{.Core=%RHp, .idx=%d, .enmKind=%d, GCPhys=%RGp}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert at the head of the age list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPool->iAgeHead].iAgePrev = pPage->idx;
3123bb2477edc752585e4bbd8e4cfedaf87997d1vboxsync * Flushes a cached page.
247b55faa8d054157f2481e68caca36f4dc9542cvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolCacheFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheFlushPage: %VGp\n", pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove the page from the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove it from the age list.
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsync pPool->aPages[pPage->iAgeNext].iAgePrev = pPage->iAgePrev;
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsync pPool->aPages[pPage->iAgePrev].iAgeNext = pPage->iAgeNext;
78a205e3fc6719d59e8c561b3d287d3a4f879852vboxsync#endif /* PGMPOOL_WITH_CACHE */
47b5427d1a541bcd269bc625c35b19d849071edfvboxsync * Looks for pages sharing the monitor.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the head page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns NULL if not found.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The Pool
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pNewPage The page which is going to be monitored.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic PPGMPOOLPAGE pgmPoolMonitorGetPageByGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pNewPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Look up the GCPhys in the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTGCPHYS GCPhys = pNewPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1);
0975ae0a0fb615c945150c48e4a73187c1f4f84dvboxsync /* 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 * @retval VERR_PGM_POOL_CLEARED if the registration of the physical handler will cause a light weight pool flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolMonitorInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorInsert %VGp\n", pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Filter out the relevant kinds.
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync /* Nothing to monitor here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Install handler.
0f5d1b2abd9e82c7ee46f1327287c44856604bcbvboxsync PPGMPOOLPAGE pPageHead = pgmPoolMonitorGetPageByGCPhys(pPool, pPage);
3068e28082ae6b05b76b89ed6615cd9e4f1186fdvboxsync Assert(pPageHead != pPage); Assert(pPageHead->iMonitoredNext != pPage->idx);
e17bd6c32a8dd64f2d42838f9028216465e2caf0vboxsync pPool->aPages[pPageHead->iMonitoredNext].iMonitoredPrev = pPage->idx;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX); Assert(pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const RTGCPHYS GCPhysPage = pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1);
5b6e2c9a765c3c72295acc15791af8a700746956vboxsync rc = PGMHandlerPhysicalRegisterEx(pVM, PGMPHYSHANDLERTYPE_PHYSICAL_WRITE,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(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 if (pVM->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Disables write monitoring of a guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
5b6e2c9a765c3c72295acc15791af8a700746956vboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolMonitorFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
79b07d7ae28b916539c6397e010a5cc05e300551vboxsync * Filter out the relevant kinds.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Nothing to monitor here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove the page from the monitored list or uninstall it if last.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pNewHead = &pPool->aPages[pPage->iMonitoredNext];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pNewHead),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pNewHead),
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(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));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pVM->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove it from the list of modified pages (if in it).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Set or clear the fCR3Mix attribute in a chain of monitored pages.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * @param pPool The Pool.
b45d66c0e496e2fd861479202f3d43aad592bd14vboxsync * @param pPage A page in the chain.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param fCR3Mix The new fCR3Mix value.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolMonitorChainChangeCR3Mix(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCR3Mix)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* current */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* before */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* after */
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync * Installs or modifies monitoring of a CR3 page (special).
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync * We're pretending the CR3 page is shadowed by the pool so we can use the
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync * generic mechanisms in detecting chained monitoring. (This also gives us a
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync * tast of what code changes are required to really pool CR3 shadow pages.)
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync * @returns VBox status code.
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync * @param pPool The pool.
b851fba305c4c9efe256db2aae648b8879930885vboxsync * @param idxRoot The CR3 (root) page index.
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync * @param GCPhysCR3 The (new) CR3 value.
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsyncint pgmPoolMonitorMonitorCR3(PPGMPOOL pPool, uint16_t idxRoot, RTGCPHYS GCPhysCR3)
8b03ab0bcd5c238021bc8a43d887dd9d0870c0f5vboxsync Assert(idxRoot != NIL_PGMPOOL_IDX && idxRoot < PGMPOOL_IDX_FIRST);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorMonitorCR3: idxRoot=%d pPage=%p:{.GCPhys=%VGp, .fMonitored=%d} GCPhysCR3=%VGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync idxRoot, pPage, pPage->GCPhys, pPage->fMonitored, GCPhysCR3));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The unlikely case where it already matches.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flush the current monitoring and remove it from the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, false);
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * Monitor the page at the new location and insert it into the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, true);
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * Removes the monitoring of a CR3 page (special).
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @returns VBox status code.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @param pPool The pool.
8cdd041284cfe47b639146efec02846e20b67a0cvboxsync * @param idxRoot The CR3 (root) page index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolMonitorUnmonitorCR3(PPGMPOOL pPool, uint16_t idxRoot)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(idxRoot != NIL_PGMPOOL_IDX && idxRoot < PGMPOOL_IDX_FIRST);
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync LogFlow(("pgmPoolMonitorUnmonitorCR3: idxRoot=%d pPage=%p:{.GCPhys=%VGp, .fMonitored=%d}\n",
5db1d52ffbcaa46c3d944c6c2d9c552306817d9avboxsync idxRoot, pPage, pPage->GCPhys, pPage->fMonitored));
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, false);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_MIXED_PT_CR3 */
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync * Inserts the page into the list of modified pages.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolMonitorModifiedInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolMonitorModifiedInsert: idx=%d\n", pPage->idx));
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync ("Next=%d Prev=%d idx=%d cModifications=%d Head=%d cModifiedPages=%d\n",
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync pPage->iModifiedNext, pPage->iModifiedPrev, pPage->idx, pPage->cModifications,
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync pPool->aPages[pPool->iModifiedHead].iModifiedPrev = pPage->idx;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPool->cModifiedPages > pPool->cModifiedPagesHigh)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Removes the page from the list of modified pages and resets the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * moficiation counter.
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync * @param pPool The pool.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * @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;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = pPage->iModifiedPrev;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Zaps the list of modified pages, resetting their modification counters in the process.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorModifiedClearAll: cModifiedPages=%d\n", pPool->cModifiedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(cPages == pPool->cModifiedPages, ("%d != %d\n", cPages, pPool->cModifiedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear all shadow pages and clear all modification counters.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark Should only be used when monitoring is available, thus placed in
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * the PGMPOOL_WITH_MONITORING #ifdef.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolClearAll: cUsedPages=%d\n", pPool->cUsedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Iterate all the pages until we've encountered all that in use.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is simple but not quite optimal solution.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync unsigned cModifiedPages = 0; NOREF(cModifiedPages);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We only care about shadow page tables.
0174432b2b1a760b89840ba696f7ba51def65dddvboxsync void *pvShw = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* fall thru */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync while (iPage-- > 0)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pRam->aPages[iPage].HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_MONITORING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees up at least one user entry.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @returns VBox status code.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @retval VINF_SUCCESS if successfully added.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsyncstatic int pgmPoolTrackFreeOneUser(PPGMPOOL pPool, uint16_t iUser)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * 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.
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync * Inserts a page into the cache.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * This will create user node for the page, insert it into the GCPhys
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync * hash, and insert it into the age list.
75fca099c974cbbd48f132af1378c60232614760vboxsync * @returns VBox status code.
75fca099c974cbbd48f132af1378c60232614760vboxsync * @retval VINF_SUCCESS if successfully added.
75fca099c974cbbd48f132af1378c60232614760vboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
57f41f24b7a290eba73c63449f44017d7917561dvboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
57f41f24b7a290eba73c63449f44017d7917561dvboxsync * @param pPool The pool.
57f41f24b7a290eba73c63449f44017d7917561dvboxsync * @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, uint16_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackInsert iUser %d iUserTable %d\n", iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Find free a user node.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Unlink the user node from the free list,
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync * initialize and insert it into the user list.
a27fbcbb29ffc2196c2ebd0f2dad92f40c7ec65dvboxsync * Insert into cache and enable monitoring of the guest page if enabled.
10e1bc06b2908a0af56d92ffdbadd25b36a5ef61vboxsync * Until we implement caching of all levels, including the CR3 one, we'll
315f443a509c31db47b8f5cb94d26e54c3d5c497vboxsync * have to make sure we don't try monitor & cache any recursive reuse of
5db1d52ffbcaa46c3d944c6c2d9c552306817d9avboxsync * a monitored CR3 page. Because all windows versions are doing this we'll
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * have to be able to do combined access monitoring, CR3 + PT and
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * PD + PT (guest PAE).
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * We're now cooperating with the CR3 monitor if an uncachable page is found.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync#if defined(PGMPOOL_WITH_MONITORING) || defined(PGMPOOL_WITH_CACHE)
7cced997f7e362bb903898de921271b5e1011e3dvboxsync const bool fCanBeMonitored = true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fCanBeMonitored = pPool->CTXSUFF(pVM)->pgm.s.GCPhysGstCR3Monitored == NIL_RTGCPHYS
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync || (GCPhys & X86_PTE_PAE_PG_MASK) != (pPool->CTXSUFF(pVM)->pgm.s.GCPhysGstCR3Monitored & X86_PTE_PAE_PG_MASK)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolCacheInsert(pPool, pPage, fCanBeMonitored); /* This can be expanded. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* 'Failed' - free the usage, and keep it in the cache (if enabled). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_MONITORING */
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync# ifdef PGMPOOL_WITH_CACHE /* (only used when the cache is enabled.) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Adds a user reference to a page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This will
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This will move the page to the head of the
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 iUser The user index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint16_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackAddUser iUser %d iUserTable %d\n", 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 * Allocate a user node.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Initialize the user node and insert it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Tell the cache to update its replacement stats for this page.
315f443a509c31db47b8f5cb94d26e54c3d5c497vboxsync# endif /* PGMPOOL_WITH_CACHE */
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Frees a user record associated with a page.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * This does not clear the entry in the user table, it simply replaces the
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * user record to the chain of free records.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * @param pPool The pool.
7cced997f7e362bb903898de921271b5e1011e3dvboxsync * @param HCPhys The HC physical address of the shadow page.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * @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, uint16_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Unlink and free the specified user entry.
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync /* Special: For PAE and 32-bit paging, there are usually no more than one user. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* General: Linear search. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Fatal: didn't find it */
6ee326f4243bcf103c001da26f5d914360b6d312vboxsync AssertFatalMsgFailed(("Didn't find the user entry! iUser=%#x iUserTable=%#x GCPhys=%VGp\n",
09d4e754a010196fe0d9d972b6ccc005ecb8b116vboxsync * Gets the entry size of a shadow table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind The kind of page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The size of the entry in bytes. That is, 4 or 8.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * returned.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind)
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)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo can we return 0? (nobody is calling this...) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Scans one shadow page table for mappings of a physical page.
b1c3cdef473df2fbc621d5da81acc82dbfb8a11avboxsync * @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: HCPhys=%RHp iShw=%d cRefs=%d\n", pPhysPage->HCPhys, iShw, cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Assert sanity.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsg(iShw < pPool->cCurPages && iShw != NIL_PGMPOOL_IDX, ("iShw=%d\n", iShw));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * 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 < 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;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if defined(DEBUG) && !defined(IN_RING0) ///@todo RTLogPrintf is missing in R0.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync 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));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PTPAE pPT = (PX86PTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < 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#if defined(DEBUG) && !defined(IN_RING0) ///@todo RTLogPrintf is missing in R0.
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)
80d5f1e090d87d68af166b4f6def4f175d6d2b74vboxsync 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.CTXSUFF(pPool); NOREF(pPool);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPT: HCPhys=%RHp iShw=%d cRefs=%d\n", pPhysPage->HCPhys, iShw, cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPT, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, iShw, cRefs);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
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: HCPhys=%RHp iPhysExt\n", pPhysPage->HCPhys, iPhysExt));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < 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 pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTs, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_GCPHYS_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Scans all shadow page tables for mappings of a physical page.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * This may be slow, but it's most likely more efficient than cleaning
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * out the entire page pool / cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if all references has been successfully cleared.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_GCPHYS_ALIASED if we're better off with a CR3 sync and
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * a page pool cleaning.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPhysPage The guest page in question.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolTrackFlushGCPhysPTsSlow(PVM pVM, PPGMPAGE pPhysPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTsSlow, s);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: cUsedPages=%d cPresent=%d HCPhys=%RHp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->cUsedPages, pPool->cPresent, pPhysPage->HCPhys));
06de36c1229f14000638fa27993b13c9133e85f5vboxsync * There is a limit to what makes sense.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: giving up... (cPresent=%d)\n", pPool->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Iterate all the pages until we've encountered all that in use.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is simple but not quite optimal solution.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We only care about shadow page tables.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
9c425bdea5f0991df62922b1584b805a86f2f898vboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX32\n", iPage, i, pPT->a[i]));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PTPAE pPT = (PX86PTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < 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 pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
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.
18db01bbe01d709ed64ef78717e98b94b7fee056vboxsyncstatic void pgmPoolTrackClearPageUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PCPGMPOOLUSER pUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Map the user page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pUserPage = &pPool->aPages[pUser->iUser];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pUserPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Some sanity checks.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!(u.pau32[pUser->iUser] & PGM_PDFLAGS_MAPPING));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!(u.pau64[pUser->iUser] & PGM_PDFLAGS_MAPPING));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pUser->iUserTable < 2048 && pUser->iUser == PGMPOOL_IDX_PAE_PD);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync AssertMsgFailed(("enmKind=%d\n", pUserPage->enmKind));
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync#endif /* VBOX_STRICT */
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * Clear the entry in the user page.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync /* 32-bit entries */
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync /* 64-bit entries */
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync 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)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Free all the user records.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Clear enter in user table. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackClearPageUser(pPool, pPage, &paUsers[i]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Free it. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Next. */
c657bea826c7455c93bd45eaebab63a4c7742c42vboxsync * 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->CTXSUFF(paPhysExts)[iPhysExt];
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsync * Frees a physical cross reference extent.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync * @param iPhysExt The extent to free.
2c080f6fc6ab70995d6390eeaa199d590c1a34d5vboxsyncvoid pgmPoolTrackPhysExtFree(PVM pVM, uint16_t iPhysExt)
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync PPGMPOOLPHYSEXT pPhysExt = &pPool->CTXSUFF(paPhysExts)[iPhysExt];
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync for (unsigned i = 0; i < ELEMENTS(pPhysExt->aidx); i++)
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync * Frees a physical cross reference extent.
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync * @param pVM The VM handle.
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync * @param iPhysExt The extent to free.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackPhysExtFreeList(PVM pVM, uint16_t iPhysExt)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(pPhysExt->aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert a reference into a list of physical cross reference extents.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The new ram range flags (top 16-bits).
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.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic uint16_t pgmPoolTrackPhysExtInsert(PVM pVM, uint16_t iPhysExt, uint16_t iShwPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* special common case. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[2] == NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedMany);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: %d:{,,%d}\n", iPhysExt, iShwPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* general treatment. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[i] == NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedMany);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: %d:{%d} i=%d cMax=%d\n", iPhysExt, iShwPT, i, cMax));
32f98f3d0fb00168315b4ece1f0808df4cd88248vboxsync return iPhysExtStart | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: overflow (1) iShwPT=%d\n", iShwPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* add another extent to the list. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT pNew = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: added new extent %d:{%d}->%d\n", iPhysExt, iShwPT, iPhysExtStart));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * Add a reference to guest physical page where extents are in use.
907da3b41f191bef4c8eb94accb9d16fcbe77019vboxsync * @returns The new ram range flags (top 16-bits).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param u16 The ram range flags (top 16-bits).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShwPT The shadow page table index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncuint16_t pgmPoolTrackPhysExtAddref(PVM pVM, uint16_t u16, uint16_t iShwPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((u16 >> (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT)) != MM_RAM_FLAGS_CREFS_PHYSEXT)
8a132edc1577cbe2a19cd778c1b2bea6ae5e8515vboxsync * Convert to extent list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert((u16 >> (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT)) == 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT pPhysExt = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: new extent: %d:{%d, %d}\n", iPhysExt, u16 & MM_RAM_FLAGS_IDX_MASK, iShwPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u16 = iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u16 = MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else if (u16 != (MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT))))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert into the extent list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u16 = pgmPoolTrackPhysExtInsert(pVM, u16 & MM_RAM_FLAGS_IDX_MASK, iShwPT);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedLots);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPhysPage Pointer to the aPages entry in the ram range.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackPhysExtDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMPAGE pPhysPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned cRefs = pPhysPage->HCPhys >> MM_RAM_FLAGS_CREFS_SHIFT; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsg(cRefs == MM_RAM_FLAGS_CREFS_PHYSEXT, ("cRefs=%d HCPhys=%RHp pPage=%p:{.idx=%d}\n", cRefs, pPhysPage->HCPhys, pPage, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint16_t iPhysExt = (pPhysPage->HCPhys >> MM_RAM_FLAGS_IDX_SHIFT) & MM_RAM_FLAGS_IDX_MASK;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Look for the shadow page and check if it's all freed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (i = 0; i < ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[i] != NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d\n", pPhysPage->HCPhys, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* we can free the node. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint16_t iPhysExtNext = paPhysExts[iPhysExt].iNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* lonely node */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d lonely\n", pPhysPage->HCPhys, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else if (iPhysExtPrev == NIL_PGMPOOL_PHYSEXT_INDEX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d head\n", pPhysPage->HCPhys, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPhysPage->HCPhys = (pPhysPage->HCPhys & MM_RAM_FLAGS_NO_REFS_MASK) /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync | ((uint64_t)MM_RAM_FLAGS_CREFS_PHYSEXT << MM_RAM_FLAGS_CREFS_SHIFT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync | ((uint64_t)iPhysExtNext << MM_RAM_FLAGS_IDX_SHIFT);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* in list */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d\n", pPhysPage->HCPhys, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("not-found! cRefs=%d HCPhys=%RHp pPage=%p:{.idx=%d}\n", cRefs, pPhysPage->HCPhys, pPage, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else /* nothing to do */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64\n", pPhysPage->HCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * This is the same as pgmPoolTracDerefGCPhys except that the guest physical address
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * is assumed to be correct, so the linear search can be skipped and we can assert
75fca099c974cbbd48f132af1378c60232614760vboxsync * at an earlier point.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * @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.
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
5db1d52ffbcaa46c3d944c6c2d9c552306817d9avboxsync /* does it match? */
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
75fca099c974cbbd48f132af1378c60232614760vboxsync AssertFatalMsgFailed(("HCPhys=%VHp GCPhys=%VGp\n", HCPhys, GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @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 * Walk range list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* does it match? */
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync 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->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync while (iPage-- > 0)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync Log4(("pgmPoolTracDerefGCPhysHint: Linear HCPhys=%VHp GCPhysHint=%VGp GCPhysReal=%VGp\n",
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync HCPhys, GCPhysHint, pRam->GCPhys + (iPage << PAGE_SHIFT)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync AssertFatalMsgFailed(("HCPhys=%VHp GCPhysHint=%VGp\n", HCPhys, GCPhysHint));
75fca099c974cbbd48f132af1378c60232614760vboxsync * Clear references to guest physical memory in a 32-bit / 32-bit page table.
9b45880674da6f82ca27cc28b0272de3dd3cc7dfvboxsync * @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 < 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);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * 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 Log4(("pgmPoolTrackDerefPTPae32Bit: i=%d pte=%RX32 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)
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync 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 < ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPT32Bit4MB: i=%d pte=%RX32 GCPhys=%RGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, GCPhys);
467e62e1aa999ec951e820d74498ef79dd1bedbdvboxsync * Clear references to guest physical memory in a PAE / 2/4MB page table.
e4ea543752422f1139923e3e506c625b0a1827c5vboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaeBig(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT)
467e62e1aa999ec951e820d74498ef79dd1bedbdvboxsync for (unsigned i = 0; i < ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync Log4(("pgmPoolTrackDerefPTPae32Bit: i=%d pte=%RX32 hint=%RX32\n",
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, GCPhys);
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync#endif /* PGMPOOL_WITH_GCPHYS_TRACKING */
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync * Clear references to shadowed pages in a PAE page directory.
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync * @param pPool The pool.
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync * @param pPage The page.
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsync * @param pShwPD The shadow page directory (mapping of the page).
8c9d2065ca6efecd5661174e382314868c0d4b94vboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPAE pShwPD)
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 64-bit page directory pointer table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPT64Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPT pShwPDPT)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync for (unsigned i = 0; i < ELEMENTS(pShwPDPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & X86_PDPE_PG_MASK);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync 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 * Clears all references made by this page.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * This includes other shadow pages and GC physical addresses.
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * @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_PTR(pPool->CTXSUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTXSUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPT32Bit32Bit(pPool, pPage, (PX86PT)pvShw, (PCX86PT)pvGst);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGM_GCPHYS_2_PTR_EX(pPool->CTXSUFF(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);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTXSUFF(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 */
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPT32Bit4MB(pPool, pPage, (PX86PT)pvShw);
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync case PGMPOOLKIND_PAE_PT_FOR_PHYS: /* treat it like a 4 MB page */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPTPaeBig(pPool, pPage, (PX86PTPAE)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#else /* !PGMPOOL_WITH_GCPHYS_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* !PGMPOOL_WITH_GCPHYS_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPDPae(pPool, pPage, (PX86PDPAE)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPDPT64Bit(pPool, pPage, (PX86PDPT)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* paranoia, clear the shadow page. Remove this laser (i.e. let Alloc and ClearAll do it). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_USER_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes all the special root pages as part of a pgmPoolFlushAllInt operation.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolFlushAllSpecialRoots(PPGMPOOL pPool)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * These special pages are all mapped into the indexes 1..PGMPOOL_IDX_FIRST.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Get the page address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Mark stuff not present.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned iPage = 0; iPage < X86_PG_ENTRIES; iPage++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((u.pau32[iPage] & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == X86_PDE_P)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned iPage = 0; iPage < X86_PG_PAE_ENTRIES * X86_PG_PAE_PDPE_ENTRIES; iPage++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((u.pau64[iPage] & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == X86_PDE_P)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned iPage = 0; iPage < X86_PG_PAE_ENTRIES; iPage++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((u.pau64[iPage] & (PGM_PLXFLAGS_PERMANENT | X86_PML4E_P)) == X86_PML4E_P)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Not root of shadowed pages currently, ignore it. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Paranoia (to be removed), flag a global CR3 sync.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync * Flushes the entire cache.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync * It will assert a global CR3 flush (FF) and assumes the caller is aware of this
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync * and execute this CR3 flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * If there are no pages in the pool, there is nothing to do.
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Nuke the free list and reinsert all pages into it.
9f1e0743f565b1975bb4efd7311b30cfa0d3e384vboxsync for (unsigned i = pPool->cCurPages - 1; i >= PGMPOOL_IDX_FIRST; i--)
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync Assert(pPage->Core.Key == MMPage2Phys(pPool->pVMHC, pPage->pvPageHC));
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync pPage->fZeroed = false; /* This could probably be optimized, but better safe than sorry. */
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync pPool->aPages[pPool->cCurPages - 1].iNext = NIL_PGMPOOL_IDX;
5db1d52ffbcaa46c3d944c6c2d9c552306817d9avboxsync * Zap and reinitialize the user records.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync for (unsigned i = 0; i < cMaxUsers; i++)
61fa69e2bc9fc9e7490feed1c020273f3ddb238dvboxsync paUsers[cMaxUsers - 1].iNext = NIL_PGMPOOL_USER_INDEX;
ec588a4ac8429a8b6c744544818b3ce3b2c75690vboxsync * Clear all the GCPhys links and rebuild the phys ext free list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync while (iPage-- > 0)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pRam->aPages[iPage].HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
00599f6d39cc25ca39845c2433cd75de7b9f6971vboxsync * Just zap the modified list.
54fe68d807196dc565de24055996e634ee40ee92vboxsync * Clear the GCPhys hash and the age list.
54fe68d807196dc565de24055996e634ee40ee92vboxsync for (unsigned i = 0; i < ELEMENTS(pPool->aiHash); i++)
3080f6c0871099df43a4e91b31894d9c2b1369a8vboxsync * Flush all the special root pages.
ec588a4ac8429a8b6c744544818b3ce3b2c75690vboxsync * Reinsert active pages into the hash and ensure monitoring chains are correct.
da936e0446fb2b56b813d5d938f1dfc6e4bf8b13vboxsync 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),
907da3b41f191bef4c8eb94accb9d16fcbe77019vboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iUserHead == NIL_PGMPOOL_USER_INDEX); /* for now */
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync * Flushes a pool page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This moves the page to the free list after removing all user references to it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * In GC this will cause a CR3 reload if the page is traced back to an active root page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The HC physical address of the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolFlushPage: pPage=%p:{.Key=%VHp, .idx=%d, .enmKind=%d, .GCPhys=%VGp}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Quietly reject any attempts at flushing any of the special root pages.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("pgmPoolFlushPage: specaial root page, rejected. enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Mark the page as being in need of a ASMMemZeroPage().
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flush it from the cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_CACHE */
50df3da42ff6589b0ecc4f50f2288811bc370186vboxsync * Deregistering the monitoring.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync * 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).
6b022885f2cb6a55167609edecd89570cd80001dvboxsyncvoid pgmPoolFreeByPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint16_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolFreeByPage: pPage=%p:{.Key=%VHp, .idx=%d, enmKind=%d} iUser=%#x iUserTable=%#x\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pPage, iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFlushPage(pPool, pPage); /* ASSUMES that VERR_PGM_POOL_CLEARED can be ignored here. */
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.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user of the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolMakeMoreFreePages(PPGMPOOL pPool, uint16_t iUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMakeMoreFreePages: iUser=%#x\n", iUser));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * If the pool isn't full grown yet, expand it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = CTXALLMID(VMM, CallHost)(pPool->CTXSUFF(pVM), VMMCALLHOST_PGM_POOL_GROW, 0);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Free one cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flush the pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * If we have tracking enabled, it should be possible to come up with
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * a cheap replacement strategy...
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Allocates a page from the pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This page may actually be a cached page and not in need of any processing
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * on the callers part.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if a NEW page was allocated.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_CACHED_PAGE if a CACHED page was returned.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @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 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 pgmPoolAlloc(PVM pVM, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, uint16_t iUser, uint16_t iUserTable, PPPGMPOOLPAGE ppPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAlloc: GCPhys=%VGp enmKind=%d iUser=%#x iUserTable=%#x\n", GCPhys, enmKind, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc2 = pgmPoolCacheAlloc(pPool, GCPhys, enmKind, iUser, iUserTable, ppPage);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolAlloc: returns %Vrc *ppPage=%p:{.Key=%VHp, .idx=%d}\n", rc2, *ppPage, (*ppPage)->Core.Key, (*ppPage)->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Allocate a new one.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertReleaseReturn(iNew != NIL_PGMPOOL_IDX, VERR_INTERNAL_ERROR);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* unlink the free head */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Initialize it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->cUsedPages++; /* physical handler registration / pgmPoolTrackFlushGCPhysPTsSlow requirement. */
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync 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);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync Log(("pgmPoolAlloc: returns %Vrc (Insert)\n", rc3));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_USER_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Commit the allocation, clear the page and return.
6b022885f2cb6a55167609edecd89570cd80001dvboxsync LogFlow(("pgmPoolAlloc: returns %Vrc *ppPage=%p:{.Key=%VHp, .idx=%d, .fCached=%RTbool, .fMonitored=%RTbool}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc, pPage, pPage->Core.Key, pPage->idx, pPage->fCached, pPage->fMonitored));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * Frees a usage of a pool page.
fe49486f3c0fc3c327138e9a8f9ea9911d7c0d64vboxsync * @param pVM The VM handle.
8da94e4d6813b682cdb38eb9b151ada72d91b40evboxsync * @param HCPhys The HC physical address of the shadow page.
3cac8f8c6923a3a89ecfccda5e89ad75f48658e0vboxsync * @param iUser The shadow page pool index of the user table.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param iUserTable The index into the user table (shadowed).
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsyncvoid pgmPoolFree(PVM pVM, RTHCPHYS HCPhys, uint16_t iUser, uint16_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolFree: HCPhys=%VHp iUser=%#x iUserTable=%#x\n", HCPhys, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFreeByPage(pPool, pgmPoolGetPage(pPool, HCPhys), iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Gets a in-use page in the pool by it's physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The HC physical address of the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark This function will NEVER return NULL. It will assert if HCPhys is invalid.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncPPGMPOOLPAGE pgmPoolGetPageByHCPhys(PVM pVM, RTHCPHYS HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo profile this! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pPage = pgmPoolGetPage(pPool, HCPhys);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolGetPageByHCPhys: HCPhys=%VHp -> %p:{.idx=%d .GCPhys=%VGp .enmKind=%d}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync HCPhys, pPage, pPage->idx, pPage->GCPhys, pPage->enmKind));
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.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param pPool The pool.