PGMAllPool.cpp revision 10e1bc06b2908a0af56d92ffdbadd25b36a5ef61
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * PGM Shadow Page Pool.
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync * Copyright (C) 2006-2007 Sun Microsystems, Inc.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * available from http://www.virtualbox.org. This file is free software;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * you can redistribute it and/or modify it under the terms of the GNU
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * General Public License (GPL) as published by the Free Software
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * additional information or have any questions.
2624f7a939f765d1975a82f3072c272f7fa3548dvboxsync/*******************************************************************************
d200be7337d4aad2bec2961a885e856f7866d4f6vboxsync* Header Files *
d200be7337d4aad2bec2961a885e856f7866d4f6vboxsync*******************************************************************************/
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync/*******************************************************************************
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync* Internal Functions *
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync*******************************************************************************/
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsyncstatic void pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint);
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable);
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Checks if the specified page pool kind is for a 4MB or 2MB guest page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns true if it's the shadow of a 4MB or 2MB guest page, otherwise false.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param enmKind The page kind.
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsyncDECLINLINE(bool) pgmPoolIsBigPage(PGMPOOLKIND enmKind)
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync return true;
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync return false;
d200be7337d4aad2bec2961a885e856f7866d4f6vboxsync * Maps a pool page into the current context.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns Pointer to the mapping.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page to map.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* general pages. */
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync Assert(pPage->idx < pVM->pgm.s.pPoolGC->cCurPages);
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync int rc = PGMGCDynMapHCPage(pVM, pPage->Core.Key, &pv);
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync /* special pages. */
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync AssertReleaseMsgFailed(("Invalid index %d\n", pPage->idx));
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync#endif /* IN_GC */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Determin the size of a write instruction.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @returns number of bytes written.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pDis The disassembler state.
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsyncstatic unsigned pgmPoolDisasWriteSize(PDISCPUSTATE pDis)
e94ff1af89bf631c68367d4e291ddbb491b5e5c0vboxsync * This is very crude and possibly wrong for some opcodes,
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync * but since it's not really supposed to be called we can
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync * probably live with that.
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync * Flushes a chain of pages sharing the same access monitor.
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync * @returns VBox status code suitable for scheduling.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
e94ff1af89bf631c68367d4e291ddbb491b5e5c0vboxsync * @param pPage A page in the chain.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncint pgmPoolMonitorChainFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolMonitorChainFlush: Flush page %VGp type=%d\n", pPage->GCPhys, pPage->enmKind));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Find the list head.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * Itereate the list flushing each shadow page.
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync if (rc2 == VERR_PGM_POOL_CLEARED && rc == VINF_SUCCESS)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Wrapper for getting the current context pointer to the entry being modified.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns Pointer to the current context mapping of the entry.
290f895ae2ac655ba90c8904a0e2687d8aa0837dvboxsync * @param pPool The pool.
290f895ae2ac655ba90c8904a0e2687d8aa0837dvboxsync * @param pvFault The fault virtual address.
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync * @param GCPhysFault The fault physical address.
e12084fc5287a5fa65e3a28bbeb05af29c22dad7vboxsync * @param cbEntry The entry size.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(const void *) pgmPoolMonitorGCPtr2CCPtr(PPGMPOOL pPool, RTHCPTR pvFault, RTGCPHYS GCPhysFault, const unsigned cbEntry)
e12084fc5287a5fa65e3a28bbeb05af29c22dad7vboxsyncDECLINLINE(const void *) pgmPoolMonitorGCPtr2CCPtr(PPGMPOOL pPool, RTGCPTR pvFault, RTGCPHYS GCPhysFault, const unsigned cbEntry)
e12084fc5287a5fa65e3a28bbeb05af29c22dad7vboxsync return (const void *)((RTGCUINTPTR)pvFault & ~(RTGCUINTPTR)(cbEntry - 1));
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync int rc = pgmRamGCPhys2HCPtr(&pPool->pVMHC->pgm.s, GCPhysFault & ~(RTGCPHYS)(cbEntry - 1), &pvRet);
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync return (RTHCPTR)((uintptr_t)pvFault & ~(RTHCUINTPTR)(cbEntry - 1));
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * Process shadow entries before they are changed by the guest.
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * For PT entries we will clear them. For PD entries, we'll simply check
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * for mapping conflicts and set the SyncCR3 FF if found.
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * @param pPool The pool.
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * @param pPage The head page.
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * @param GCPhysFault The guest physical fault address.
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * @param uAddress In R0 and GC this is the guest context fault address (flat).
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * In R3 this is the host context 'fault' address.
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * @param pCpu The disassembler state for figuring out the write size.
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync * This need not be specified if the caller knows we won't do cross entry accesses.
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsyncvoid pgmPoolMonitorChainChanging(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, RTHCPTR pvAddress, PDISCPUSTATE pCpu)
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsyncvoid pgmPoolMonitorChainChanging(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, RTGCPTR pvAddress, PDISCPUSTATE pCpu)
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync const unsigned off = GCPhysFault & PAGE_OFFSET_MASK;
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync LogFlow(("pgmPoolMonitorChainChanging: %VGv phys=%VGp kind=%d\n", pvAddress, GCPhysFault, pPage->enmKind));
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync uShw.pv = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync PCX86PTE pGstPte = (PCX86PTE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync 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));
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync /* page/2 sized */
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync const unsigned iShw = (off / sizeof(X86PTE)) & (X86_PG_PAE_ENTRIES - 1);
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync PCX86PTE pGstPte = (PCX86PTE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync 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));
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync PCX86PTEPAE pGstPte = (PCX86PTEPAE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
ba6cd8af51db6aeff784fd6d73cadaf13ec45996vboxsync 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));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync const unsigned iShw = off / sizeof(X86PTE); // ASSUMING 32-bit guest paging!
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync /* paranoia / a bit assumptive. */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync const unsigned iShw2 = (off + pgmPoolDisasWriteSize(pCpu) - 1) / sizeof(X86PTE);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX32 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPD->a[iShw].u & X86_PDE_PG_MASK, pPage->idx, iShw);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync unsigned iShw = (off / sizeof(X86PTE)) * 2; // ASSUMING 32-bit guest paging!
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync if ((uShw.pPDPae->a[iShw].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync /* paranoia / a bit assumptive. */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync && (uShw.pPDPae->a[iShw2].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPDPae->a[iShw].u & X86_PDE_PAE_PG_MASK, pPage->idx, iShw);
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync /* paranoia / a bit assumptive. */
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync && (off & 7) + pgmPoolDisasWriteSize(pCpu) > sizeof(X86PTEPAE))
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync const unsigned iShw2 = (off + pgmPoolDisasWriteSize(pCpu) - 1) / sizeof(X86PTEPAE);
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX32 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShwpPDPae->a[iShw].u & X86_PDE_PG_MASK, pPage->idx, iShw);
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync /* Hopefully this doesn't happen very often:
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync * - touching unused parts of the page
b9473064e26edc9a65150b4206ea1e52f3ca600avboxsync * - messing with the bits of pd pointers without changing the physical address
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync if (iShw < X86_PG_PAE_PDPE_ENTRIES) /* don't use ELEMENTS(uShw.pPDPT->a), because that's for long mode only */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
b9473064e26edc9a65150b4206ea1e52f3ca600avboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync /* paranoia / a bit assumptive. */
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync && (off & 7) + pgmPoolDisasWriteSize(pCpu) > sizeof(X86PDPE))
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync const unsigned iShw2 = (off + pgmPoolDisasWriteSize(pCpu) - 1) / sizeof(X86PDPE);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync /* Hopefully this doesn't happen very often:
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync * - messing with the bits of pd pointers without changing the physical address
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPT->a[iShw].u));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPDPT->a[iShw].u & X86_PDE_PAE_PG_MASK, pPage->idx, iShw);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Checks if a access could be a fork operation in progress.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Meaning, that the guest is setuping up the parent process for Copy-On-Write.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns true if it's likly that we're forking, otherwise false.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pCpu The disassembled instruction.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param offFault The access offset.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(bool) pgmPoolMonitorIsForking(PPGMPOOL pPool, PDISCPUSTATE pCpu, unsigned offFault)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * i386 linux is using btr to clear X86_PTE_RW.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * The functions involved are (2.6.16 source inspection):
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * clear_bit
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync * ptep_set_wrprotect
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * copy_one_pte
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * copy_pte_range
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * copy_pmd_range
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * copy_pud_range
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * copy_page_range
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * copy_process
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync /** @todo Validate that the bit index is X86_PTE_RW. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,Fork));
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync return true;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return false;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Determin whether the page is likely to have been reused.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns true if we consider the page as being reused for a different purpose.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns false if we consider it to still be a paging page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page in question.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pCpu The disassembly info for the faulting insturction.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pvFault The fault address.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @remark The REP prefix check is left to the caller because of STOSD/W.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(bool) pgmPoolMonitorIsReused(PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu, RTGCPTR pvFault)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return true;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return true;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return true;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return true;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return true;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync case OP_MOVNTDQ: /* solaris - hwblkclr & hwblkpagecopy */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return true;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return true;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync //if (pPage->fCR3Mix)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync // return false;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return false;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Flushes the page being accessed.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code suitable for scheduling.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The pool page (head).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pCpu The disassembly of the write instruction.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pRegFrame The trap register frame.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param GCPhysFault The fault address as guest physical address.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pvFault The fault address.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic int pgmPoolAccessHandlerFlush(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * First, do the flushing.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Emulate the instruction (xp/w2k problem, requires pc/cr2/sp detection).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync int rc2 = EMInterpretInstructionCPU(pVM, pCpu, pRegFrame, pvFault, &cbWritten);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if (PATMIsPatchGCAddr(pVM, (RTRCPTR)pRegFrame->eip))
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv, ignoring.\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_COUNTER_INC(&pPool->StatMonitorGCIntrFailPatch2);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,EmulateInstr));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* See use in pgmPoolAccessHandlerSimple(). */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolAccessHandlerPT: returns %Vrc (flushed)\n", rc));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Handles the STOSD write accesses.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code suitable for scheduling.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The pool page (head).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pCpu The disassembly of the write instruction.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pRegFrame The trap register frame.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param GCPhysFault The fault address as guest physical address.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pvFault The fault address.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(int) pgmPoolAccessHandlerSTOSD(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Increment the modification counter and insert it into the list
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * of modified pages the first time.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Execute REP STOSD.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This ASSUMES that we're not invoked by Trap0e on in a out-of-sync
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * write situation, meaning that it's safe to write here.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolMonitorChainChanging(pPool, pPage, GCPhysFault, (RTGCPTR)pu32, NULL);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PGMPhysWriteGCPhys(pVM, GCPhysFault, &pRegFrame->eax, 4);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* See use in pgmPoolAccessHandlerSimple(). */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Handles the simple write accesses.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code suitable for scheduling.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The pool page (head).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pCpu The disassembly of the write instruction.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pRegFrame The trap register frame.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param GCPhysFault The fault address as guest physical address.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pvFault The fault address.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(int) pgmPoolAccessHandlerSimple(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Increment the modification counter and insert it into the list
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * of modified pages the first time.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear all the pages. ASSUMES that pvFault is readable.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolMonitorChainChanging(pPool, pPage, GCPhysFault, pvFault, pCpu);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Interpret the instruction.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync int rc = EMInterpretInstructionCPU(pVM, pCpu, pRegFrame, pvFault, &cb);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv - opcode=%d\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pRegFrame->cs, (RTGCPTR)pRegFrame->eip, pCpu->pCurInstr->opcode));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,EmulateInstr));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Quick hack, with logging enabled we're getting stale
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * code TLBs but no data TLB for EIP and crash in EMInterpretDisasOne.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Flushing here is BAD and expensive, I think EMInterpretDisasOne will
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * have to be fixed to support this. But that'll have to wait till next week.
7c19e11502220292d5270519296442234c2493cdvboxsync * An alternative is to keep track of the changed PTEs together with the
7c19e11502220292d5270519296442234c2493cdvboxsync * GCPhys from the guest PT. This may proove expensive though.
7c19e11502220292d5270519296442234c2493cdvboxsync * At the moment, it's VITAL that it's done AFTER the instruction interpreting
7c19e11502220292d5270519296442234c2493cdvboxsync * because we need the stale TLBs in some cases (XP boot). This MUST be fixed properly!
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolAccessHandlerSimple: returns %Vrc cb=%d\n", rc, cb));
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync * \#PF Handler callback for PT write accesses.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code (appropriate for GC return).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM VM Handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param uErrorCode CPU Error code.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pRegFrame Trap register frame.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * NULL on DMA and other non CPU access.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pvFault The fault address (cr2).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param GCPhysFault The GC physical address corresponding to pvFault.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pvUser User argument.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_PROFILE_START(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), a);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolAccessHandler: pvFault=%VGv pPage=%p:{.idx=%d} GCPhysFault=%VGp\n", pvFault, pPage, pPage->idx, GCPhysFault));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * We should ALWAYS have the list head as user parameter. This
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * is because we use that page to record the changes.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Disassemble the faulting instruction.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync int rc = EMInterpretDisasOne(pVM, pRegFrame, &Cpu, NULL);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Check if it's worth dealing with.
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync bool fReused = false;
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync if ( ( pPage->cModifications < 48 /** @todo #define */ /** @todo need to check that it's not mapping EIP. */ /** @todo adjust this! */
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync && !(fReused = pgmPoolMonitorIsReused(pPage, &Cpu, pvFault))
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync && !pgmPoolMonitorIsForking(pPool, &Cpu, GCPhysFault & PAGE_OFFSET_MASK))
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Simple instructions, no REP prefix.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync rc = pgmPoolAccessHandlerSimple(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,Handled), a);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Windows is frequently doing small memset() operations (netio test 4k+).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * We have to deal with these or we'll kill the cache and performance.
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync && pRegFrame->ecx * 4 <= PAGE_SIZE - ((uintptr_t)pvFault & PAGE_OFFSET_MASK)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync && (pRegFrame->eax == 0 || pRegFrame->eax == 0x80) /* the two values observed. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync rc = pgmPoolAccessHandlerSTOSD(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,RepStosd), a);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* REP prefix, don't bother. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,RepPrefix));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log4(("pgmPoolAccessHandler: eax=%#x ecx=%#x edi=%#x esi=%#x eip=%#x opcode=%d prefix=%#x\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pRegFrame->eax, pRegFrame->ecx, pRegFrame->edi, pRegFrame->esi, pRegFrame->eip, Cpu.pCurInstr->opcode, Cpu.prefix));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Not worth it, so flush it.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * If we considered it to be reused, don't to back to ring-3
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * to emulate failed instructions since we usually cannot
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * interpret then. This may be a bit risky, in which case
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * the reuse detection must be fixed.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync rc = pgmPoolAccessHandlerFlush(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,FlushPage), a);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync# endif /* !IN_RING3 */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync#endif /* PGMPOOL_WITH_MONITORING */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Inserts a page into the GCPhys hash table.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPool The pool.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPage The page.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsyncDECLINLINE(void) pgmPoolHashInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync Log3(("pgmPoolHashInsert: %VGp\n", pPage->GCPhys));
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync Assert(pPage->GCPhys != NIL_RTGCPHYS); Assert(pPage->iNext == NIL_PGMPOOL_IDX);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Removes a page from the GCPhys hash table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(void) pgmPoolHashRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log3(("pgmPoolHashRemove: %VGp\n", pPage->GCPhys));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertReleaseMsgFailed(("GCPhys=%VGp idx=%#x\n", pPage->GCPhys, pPage->idx));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Frees up one cache page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @returns VBox status code.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @retval VINF_SUCCESS on success.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of a physical handler will cause a light weight pool flush.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param pPool The pool.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param iUser The user index.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsyncstatic int pgmPoolCacheFreeOne(PPGMPOOL pPool, uint16_t iUser)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(pPool->iAgeHead != pPool->iAgeTail); /* We shouldn't be here if there < 2 cached entries! */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Select one page from the tail of the age list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync/* This is the alternative to the SyncCR3 pgmPoolCacheUsed calls.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if (pPool->aPages[iToFree].iUserHead != NIL_PGMPOOL_USER_INDEX)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync uint16_t i = pPool->aPages[iToFree].iAgePrev;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned j = 0; j < 10 && i != NIL_PGMPOOL_USER_INDEX; j++, i = pPool->aPages[i].iAgePrev)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if (pPool->aPages[iToFree].iUserHead == NIL_PGMPOOL_USER_INDEX)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync iToFree = i;
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync int rc = pgmPoolFlushPage(pPool, &pPool->aPages[iToFree]);
f067ea84f385c1b66e9b1f3c6faf7cacb0eb194cvboxsync * Checks if a kind mismatch is really a page being reused
f067ea84f385c1b66e9b1f3c6faf7cacb0eb194cvboxsync * or if it's just normal remappings.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * @returns true if reused and the cached page (enmKind1) should be flushed
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * @returns false if not reused.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * @param enmKind1 The kind of the cached page.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * @param enmKind2 The kind of the requested page.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsyncstatic bool pgmPoolCacheReusedByKind(PGMPOOLKIND enmKind1, PGMPOOLKIND enmKind2)
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync * Never reuse them. There is no remapping in non-paging mode.
e819feefdc34d50781a3c95edecda1072e8575d0vboxsync return true;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync return true;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync return false;
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
e819feefdc34d50781a3c95edecda1072e8575d0vboxsync return true;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync return false;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * These cannot be flushed, and it's common to reuse the PDs as PTs.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync return false;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Attempts to satisfy a pgmPoolAlloc request from the cache.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @returns VBox status code.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @retval VINF_PGM_CACHED_PAGE on success.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @retval VERR_FILE_NOT_FOUND if not found.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPool The pool.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param enmKind The kind of mapping.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param iUser The shadow page pool index of the user table.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param iUserTable The index into the user table (shadowed).
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync * @param ppPage Where to store the pointer to the page.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsyncstatic int pgmPoolCacheAlloc(PPGMPOOL pPool, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, uint16_t iUser, uint32_t iUserTable, PPPGMPOOLPAGE ppPage)
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Look up the GCPhys in the hash.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Log3(("pgmPoolCacheAlloc: %VGp kind %d iUser=%d iUserTable=%x SLOT=%d\n", GCPhys, enmKind, iUser, iUserTable, i));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Log3(("pgmPoolCacheAlloc: slot %d found page %VGp\n", i, pPage->GCPhys));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync int rc = pgmPoolTrackAddUser(pPool, pPage, iUser, iUserTable);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * The kind is different. In some cases we should now flush the page
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * as it has been reused, but in most cases this is normal remapping
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * of PDs as PT or big pages using the GCPhys field in a slightly
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * different way than the other kinds.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync if (pgmPoolCacheReusedByKind((PGMPOOLKIND)pPage->enmKind, enmKind))
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pgmPoolFlushPage(pPool, pPage); /* ASSUMES that VERR_PGM_POOL_CLEARED will be returned by pgmPoolTracInsert. */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync } while (i != NIL_PGMPOOL_IDX);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Log3(("pgmPoolCacheAlloc: Missed GCPhys=%RGp enmKind=%d\n", GCPhys, enmKind));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Inserts a page into the cache.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPool The pool.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPage The cached page.
e819feefdc34d50781a3c95edecda1072e8575d0vboxsync * @param fCanBeCached Set if the page is fit for caching from the caller's point of view.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsyncstatic void pgmPoolCacheInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCanBeCached)
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Insert into the GCPhys hash if the page is fit for that.
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync Log3(("pgmPoolCacheInsert: Caching %p:{.Core=%RHp, .idx=%d, .enmKind=%d, GCPhys=%RGp}\n",
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Log3(("pgmPoolCacheInsert: Not caching %p:{.Core=%RHp, .idx=%d, .enmKind=%d, GCPhys=%RGp}\n",
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Insert at the head of the age list.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPool->aPages[pPool->iAgeHead].iAgePrev = pPage->idx;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Flushes a cached page.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPool The pool.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPage The cached page.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsyncstatic void pgmPoolCacheFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Log3(("pgmPoolCacheFlushPage: %VGp\n", pPage->GCPhys));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Remove the page from the hash.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Remove it from the age list.
815647972e1e2746466be1ea725e702459693cd5vboxsync pPool->aPages[pPage->iAgeNext].iAgePrev = pPage->iAgePrev;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPool->aPages[pPage->iAgePrev].iAgeNext = pPage->iAgeNext;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync#endif /* PGMPOOL_WITH_CACHE */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Looks for pages sharing the monitor.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @returns Pointer to the head page.
815647972e1e2746466be1ea725e702459693cd5vboxsync * @returns NULL if not found.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPool The Pool
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pNewPage The page which is going to be monitored.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsyncstatic PPGMPOOLPAGE pgmPoolMonitorGetPageByGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pNewPage)
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Look up the GCPhys in the hash.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync RTGCPHYS GCPhys = pNewPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync /* find the head */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync /* ignore, no monitoring. */
815647972e1e2746466be1ea725e702459693cd5vboxsync AssertFatalMsgFailed(("enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync } while (i != NIL_PGMPOOL_IDX);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Enabled write monitoring of a guest page.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @returns VBox status code.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @retval VINF_SUCCESS on success.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @retval VERR_PGM_POOL_CLEARED if the registration of the physical handler will cause a light weight pool flush.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPool The pool.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPage The cached page.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsyncstatic int pgmPoolMonitorInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync LogFlow(("pgmPoolMonitorInsert %VGp\n", pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1)));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Filter out the relevant kinds.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync /* Nothing to monitor here. */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Install handler.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync PPGMPOOLPAGE pPageHead = pgmPoolMonitorGetPageByGCPhys(pPool, pPage);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Assert(pPageHead != pPage); Assert(pPageHead->iMonitoredNext != pPage->idx);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPool->aPages[pPageHead->iMonitoredNext].iMonitoredPrev = pPage->idx;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX); Assert(pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync const RTGCPHYS GCPhysPage = pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync rc = PGMHandlerPhysicalRegisterEx(pVM, PGMPHYSHANDLERTYPE_PHYSICAL_WRITE,
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(pVM, pPage),
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync /** @todo we should probably deal with out-of-memory conditions here, but for now increasing
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync * the heap size should suffice. */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync if (pVM->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Disables write monitoring of a guest page.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @returns VBox status code.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @retval VINF_SUCCESS on success.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPool The pool.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPage The cached page.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsyncstatic int pgmPoolMonitorFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Filter out the relevant kinds.
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync /* Nothing to monitor here. */
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync * Remove the page from the monitored list or uninstall it if last.
bf8889d6b20936475381d2ed2b80b06eaf2a03d1vboxsync PPGMPOOLPAGE pNewHead = &pPool->aPages[pPage->iMonitoredNext];
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1),
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pNewHead),
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pNewHead),
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(pVM, pNewHead),
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync pPool->aPages[pPage->iMonitoredPrev].iMonitoredNext = pPage->iMonitoredNext;
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync pPool->aPages[pPage->iMonitoredNext].iMonitoredPrev = pPage->iMonitoredPrev;
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync rc = PGMHandlerPhysicalDeregister(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1));
9a379ef11a4bb232c8e41c12b82ec94c8e10d9a0vboxsync if (pVM->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Remove it from the list of modified pages (if in it).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Set or clear the fCR3Mix attribute in a chain of monitored pages.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The Pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage A page in the chain.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param fCR3Mix The new fCR3Mix value.
7c19e11502220292d5270519296442234c2493cdvboxsyncstatic void pgmPoolMonitorChainChangeCR3Mix(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCR3Mix)
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync /* current */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* before */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync /* after */
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * Installs or modifies monitoring of a CR3 page (special).
7c19e11502220292d5270519296442234c2493cdvboxsync * We're pretending the CR3 page is shadowed by the pool so we can use the
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * generic mechanisms in detecting chained monitoring. (This also gives us a
7c19e11502220292d5270519296442234c2493cdvboxsync * tast of what code changes are required to really pool CR3 shadow pages.)
7c19e11502220292d5270519296442234c2493cdvboxsync * @returns VBox status code.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPool The pool.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param idxRoot The CR3 (root) page index.
7c19e11502220292d5270519296442234c2493cdvboxsync * @param GCPhysCR3 The (new) CR3 value.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsyncint pgmPoolMonitorMonitorCR3(PPGMPOOL pPool, uint16_t idxRoot, RTGCPHYS GCPhysCR3)
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Assert(idxRoot != NIL_PGMPOOL_IDX && idxRoot < PGMPOOL_IDX_FIRST);
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync LogFlow(("pgmPoolMonitorMonitorCR3: idxRoot=%d pPage=%p:{.GCPhys=%VGp, .fMonitored=%d} GCPhysCR3=%VGp\n",
7c19e11502220292d5270519296442234c2493cdvboxsync idxRoot, pPage, pPage->GCPhys, pPage->fMonitored, GCPhysCR3));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * The unlikely case where it already matches.
7c19e11502220292d5270519296442234c2493cdvboxsync * Flush the current monitoring and remove it from the hash.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, false);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Monitor the page at the new location and insert it into the hash.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, true);
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync * Removes the monitoring of a CR3 page (special).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param idxRoot The CR3 (root) page index.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncint pgmPoolMonitorUnmonitorCR3(PPGMPOOL pPool, uint16_t idxRoot)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(idxRoot != NIL_PGMPOOL_IDX && idxRoot < PGMPOOL_IDX_FIRST);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolMonitorUnmonitorCR3: idxRoot=%d pPage=%p:{.GCPhys=%VGp, .fMonitored=%d}\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync idxRoot, pPage, pPage->GCPhys, pPage->fMonitored));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, false);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#endif /* PGMPOOL_WITH_MIXED_PT_CR3 */
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync * Inserts the page into the list of modified pages.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncvoid pgmPoolMonitorModifiedInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log3(("pgmPoolMonitorModifiedInsert: idx=%d\n", pPage->idx));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync ("Next=%d Prev=%d idx=%d cModifications=%d Head=%d cModifiedPages=%d\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPage->iModifiedNext, pPage->iModifiedPrev, pPage->idx, pPage->cModifications,
815647972e1e2746466be1ea725e702459693cd5vboxsync pPool->aPages[pPool->iModifiedHead].iModifiedPrev = pPage->idx;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if (pPool->cModifiedPages > pPool->cModifiedPagesHigh)
e819feefdc34d50781a3c95edecda1072e8575d0vboxsync * Removes the page from the list of modified pages and resets the
d200be7337d4aad2bec2961a885e856f7866d4f6vboxsync * moficiation counter.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pPage The page which is believed to be in the list of modified pages.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync Log3(("pgmPoolMonitorModifiedRemove: idx=%d cModifications=%d\n", pPage->idx, pPage->cModifications));
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = NIL_PGMPOOL_IDX;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPool->aPages[pPage->iModifiedPrev].iModifiedNext = pPage->iModifiedNext;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = pPage->iModifiedPrev;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Zaps the list of modified pages, resetting their modification counters in the process.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync LogFlow(("pgmPoolMonitorModifiedClearAll: cModifiedPages=%d\n", pPool->cModifiedPages));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertMsg(cPages == pPool->cModifiedPages, ("%d != %d\n", cPages, pPool->cModifiedPages));
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync * Clear all shadow pages and clear all modification counters.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @remark Should only be used when monitoring is available, thus placed in
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * the PGMPOOL_WITH_MONITORING #ifdef.
d200be7337d4aad2bec2961a885e856f7866d4f6vboxsync LogFlow(("pgmPoolClearAll: cUsedPages=%d\n", pPool->cUsedPages));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Iterate all the pages until we've encountered all that in use.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This is simple but not quite optimal solution.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync unsigned cModifiedPages = 0; NOREF(cModifiedPages);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * We only care about shadow page tables.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync void *pvShw = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* fall thru */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(!pPage->cModifications || ++cModifiedPages);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX || pPage->cModifications);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX || pPage->cModifications);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* swipe the special pages too. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (iPage = PGMPOOL_IDX_FIRST_SPECIAL; iPage < PGMPOOL_IDX_FIRST; iPage++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(!pPage->cModifications || ++cModifiedPages);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX || pPage->cModifications);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX || pPage->cModifications);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertMsg(cModifiedPages == pPool->cModifiedPages, ("%d != %d\n", cModifiedPages, pPool->cModifiedPages));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear all the GCPhys links and rebuild the phys ext free list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync while (iPage-- > 0)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pRam->aPages[iPage].HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
7c19e11502220292d5270519296442234c2493cdvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
529e6bec97f5ef2e005c99c205c9624583ecb7f0vboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync#endif /* PGMPOOL_WITH_MONITORING */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Frees up at least one user entry.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync * @retval VINF_SUCCESS if successfully added.
7c19e11502220292d5270519296442234c2493cdvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
7c19e11502220292d5270519296442234c2493cdvboxsync * @param pPool The pool.
7c19e11502220292d5270519296442234c2493cdvboxsync * @param iUser The user index.
07557d07616212d7ba6e7ab3059e85cb14633775vboxsyncstatic int pgmPoolTrackFreeOneUser(PPGMPOOL pPool, uint16_t iUser)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Just free cached pages in a braindead fashion.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /** @todo walk the age list backwards and free the first with usage. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync } while (pPool->iUserFreeHead == NIL_PGMPOOL_USER_INDEX);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Lazy approach.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Inserts a page into the cache.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This will create user node for the page, insert it into the GCPhys
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * hash, and insert it into the age list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VINF_SUCCESS if successfully added.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The cached page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUser The user index.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUserTable The user table index.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(int) pgmPoolTrackInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhys, uint16_t iUser, uint32_t iUserTable)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackInsert iUser %d iUserTable %d\n", iUser, iUserTable));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Find free a user node.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Unlink the user node from the free list,
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * initialize and insert it into the user list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Insert into cache and enable monitoring of the guest page if enabled.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Until we implement caching of all levels, including the CR3 one, we'll
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * have to make sure we don't try monitor & cache any recursive reuse of
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * a monitored CR3 page. Because all windows versions are doing this we'll
1f1f533d5b88c35cf740dca55c6f1937d1035a36vboxsync * have to be able to do combined access monitoring, CR3 + PT and
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * PD + PT (guest PAE).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * We're now cooperating with the CR3 monitor if an uncachable page is found.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#if defined(PGMPOOL_WITH_MONITORING) || defined(PGMPOOL_WITH_CACHE)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync const bool fCanBeMonitored = true;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync bool fCanBeMonitored = pPool->CTXSUFF(pVM)->pgm.s.GCPhysGstCR3Monitored == NIL_RTGCPHYS
07557d07616212d7ba6e7ab3059e85cb14633775vboxsync || (GCPhys & X86_PTE_PAE_PG_MASK) != (pPool->CTXSUFF(pVM)->pgm.s.GCPhysGstCR3Monitored & X86_PTE_PAE_PG_MASK)
7c19e11502220292d5270519296442234c2493cdvboxsync pgmPoolCacheInsert(pPool, pPage, fCanBeMonitored); /* This can be expanded. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* 'Failed' - free the usage, and keep it in the cache (if enabled). */
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync#endif /* PGMPOOL_WITH_MONITORING */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync# ifdef PGMPOOL_WITH_CACHE /* (only used when the cache is enabled.) */
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync * Adds a user reference to a page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This will
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This will move the page to the head of the
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VINF_SUCCESS if successfully added.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync * @param pPage The cached page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUser The user index.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUserTable The user table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackAddUser iUser %d iUserTable %d\n", iUser, iUserTable));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Check that the entry doesn't already exists.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertMsg(paUsers[i].iUser != iUser || paUsers[i].iUserTable != iUserTable, ("%x %x vs new %x %x\n", paUsers[i].iUser, paUsers[i].iUserTable, iUser, iUserTable));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Allocate a user node.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Initialize the user node and insert it.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Tell the cache to update its replacement stats for this page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync# endif /* PGMPOOL_WITH_CACHE */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Frees a user record associated with a page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This does not clear the entry in the user table, it simply replaces the
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * user record to the chain of free records.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param HCPhys The HC physical address of the shadow page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUser The shadow page pool index of the user table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUserTable The index into the user table (shadowed).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic void pgmPoolTrackFreeUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Unlink and free the specified user entry.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* Special: For PAE and 32-bit paging, there is usually no more than one user. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* General: Linear search. */
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync /* Fatal: didn't find it */
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync AssertFatalMsgFailed(("Didn't find the user entry! iUser=%#x iUserTable=%#x GCPhys=%VGp\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Gets the entry size of a shadow table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param enmKind The kind of page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns The size of the entry in bytes. That is, 4 or 8.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * returned.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Gets the entry size of a guest table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param enmKind The kind of page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns The size of the entry in bytes. That is, 0, 4 or 8.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * returned.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /** @todo can we return 0? (nobody is calling this...) */
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync * Scans one shadow page table for mappings of a physical page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPhysPage The guest page in question.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iShw The shadow page table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param cRefs The number of references made in that PT.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic void pgmPoolTrackFlushGCPhysPTInt(PVM pVM, PCPGMPAGE pPhysPage, uint16_t iShw, uint16_t cRefs)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPT: HCPhys=%RHp iShw=%d cRefs=%d\n", pPhysPage->HCPhys, iShw, cRefs));
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync * Assert sanity.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsg(iShw < pPool->cCurPages && iShw != NIL_PGMPOOL_IDX, ("iShw=%d\n", iShw));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Then, clear the actual mappings to the page in the shadow PT.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync const uint32_t u32 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX32 cRefs=%#x\n", i, pPT->a[i], cRefs));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPT->a[i].u = 0;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#if defined(DEBUG) && !defined(IN_RING0) ///@todo RTLogPrintf is missing in R0.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync RTLogPrintf("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPT->a[i].u = 0;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsgFailed(("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PX86PTPAE pPT = (PX86PTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX64 cRefs=%#x\n", i, pPT->a[i], cRefs));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPT->a[i].u = 0;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#if defined(DEBUG) && !defined(IN_RING0) ///@todo RTLogPrintf is missing in R0.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync RTLogPrintf("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPT->a[i].u = 0;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsgFailed(("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsgFailed(("enmKind=%d iShw=%d\n", pPage->enmKind, iShw));
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync * Scans one shadow page table for mappings of a physical page.
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync * @param pVM The VM handle.
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync * @param pPhysPage The guest page in question.
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync * @param iShw The shadow page table.
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync * @param cRefs The number of references made in that PT.
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsyncvoid pgmPoolTrackFlushGCPhysPT(PVM pVM, PPGMPAGE pPhysPage, uint16_t iShw, uint16_t cRefs)
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync PPGMPOOL pPool = pVM->pgm.s.CTXSUFF(pPool); NOREF(pPool);
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPT: HCPhys=%RHp iShw=%d cRefs=%d\n", pPhysPage->HCPhys, iShw, cRefs));
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPT, f);
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, iShw, cRefs);
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPT, f);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Flushes a list of shadow page tables mapping the same physical page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPhysPage The guest page in question.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iPhysExt The physical cross reference extent list to flush.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncvoid pgmPoolTrackFlushGCPhysPTs(PVM pVM, PPGMPAGE pPhysPage, uint16_t iPhysExt)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTs, f);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTs: HCPhys=%RHp iPhysExt\n", pPhysPage->HCPhys, iPhysExt));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = 0; i < ELEMENTS(pPhysExt->aidx); i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, pPhysExt->aidx[i], 1);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* insert the list into the free list and clear the ram range entry. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTs, f);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#endif /* PGMPOOL_WITH_GCPHYS_TRACKING */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Scans all shadow page tables for mappings of a physical page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This may be slow, but it's most likely more efficient than cleaning
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * out the entire page pool / cache.
22e8ba5dcc23ec1e6715802fb7ac56b449d1c857vboxsync * @returns VBox status code.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VINF_SUCCESS if all references has been successfully cleared.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VINF_PGM_GCPHYS_ALIASED if we're better off with a CR3 sync and
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * a page pool cleaning.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPhysPage The guest page in question.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncint pgmPoolTrackFlushGCPhysPTsSlow(PVM pVM, PPGMPAGE pPhysPage)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTsSlow, s);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: cUsedPages=%d cPresent=%d HCPhys=%RHp\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPool->cUsedPages, pPool->cPresent, pPhysPage->HCPhys));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * There is a limit to what makes sense.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: giving up... (cPresent=%d)\n", pPool->cPresent));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Iterate all the pages until we've encountered all that in use.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This is simple but not quite optimal solution.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * We only care about shadow page tables.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX32\n", iPage, i, pPT->a[i]));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pPT->a[i].u = 0;
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync PX86PTPAE pPT = (PX86PTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX64\n", iPage, i, pPT->a[i]));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pPT->a[i].u = 0;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Clears the user entry in a user table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This is used to remove all references to a page when flushing it.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic void pgmPoolTrackClearPageUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PCPGMPOOLUSER pUser)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Map the user page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync PPGMPOOLPAGE pUserPage = &pPool->aPages[pUser->iUser];
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pUserPage);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Some sanity checks.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(!(u.pau32[pUser->iUser] & PGM_PDFLAGS_MAPPING));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(!(u.pau64[pUser->iUser] & PGM_PDFLAGS_MAPPING));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(pUser->iUserTable < 2048 && pUser->iUser == PGMPOOL_IDX_PAE_PD);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(!(u.pau64[pUser->iUser] & PGM_PDFLAGS_MAPPING));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(pUser->iUserTable < X86_PG_PAE_ENTRIES*X86_PG_PAE_ENTRIES && pUser->iUser == PGMPOOL_IDX_PDPT);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(pUser->iUserTable < X86_PG_PAE_ENTRIES && pUser->iUser == PGMPOOL_IDX_PML4);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertMsgFailed(("enmKind=%d\n", pUserPage->enmKind));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#endif /* VBOX_STRICT */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear the entry in the user page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* 32-bit entries */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* 64-bit entries */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsgFailed(("enmKind=%d iUser=%#x iUserTable=%#x\n", pUserPage->enmKind, pUser->iUser, pUser->iUserTable));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clears all users of a page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic void pgmPoolTrackClearPageUsers(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Free all the user records.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* Clear enter in user table. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTrackClearPageUser(pPool, pPage, &paUsers[i]);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* Free it. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* Next. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Allocates a new physical cross reference extent.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns Pointer to the allocated extent on success. NULL if we're out of them.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param piPhysExt Where to store the phys ext index.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsyncPPGMPOOLPHYSEXT pgmPoolTrackPhysExtAlloc(PVM pVM, uint16_t *piPhysExt)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_COUNTER_INC(&pPool->StamTrackPhysExtAllocFailures);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMPOOLPHYSEXT pPhysExt = &pPool->CTXSUFF(paPhysExts)[iPhysExt];
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Frees a physical cross reference extent.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param iPhysExt The extent to free.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncvoid pgmPoolTrackPhysExtFree(PVM pVM, uint16_t iPhysExt)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMPOOLPHYSEXT pPhysExt = &pPool->CTXSUFF(paPhysExts)[iPhysExt];
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = 0; i < ELEMENTS(pPhysExt->aidx); i++)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Frees a physical cross reference extent.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iPhysExt The extent to free.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncvoid pgmPoolTrackPhysExtFreeList(PVM pVM, uint16_t iPhysExt)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = 0; i < ELEMENTS(pPhysExt->aidx); i++)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Insert a reference into a list of physical cross reference extents.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @returns The new ram range flags (top 16-bits).
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param pVM The VM handle.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param iPhysExt The physical extent index of the list head.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iShwPT The shadow page table index.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic uint16_t pgmPoolTrackPhysExtInsert(PVM pVM, uint16_t iPhysExt, uint16_t iShwPT)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync /* special common case. */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync if (paPhysExts[iPhysExt].aidx[2] == NIL_PGMPOOL_IDX)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedMany);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtAddref: %d:{,,%d}\n", iPhysExt, iShwPT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* general treatment. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = 0; i < ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if (paPhysExts[iPhysExt].aidx[i] == NIL_PGMPOOL_IDX)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedMany);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtAddref: %d:{%d} i=%d cMax=%d\n", iPhysExt, iShwPT, i, cMax));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return iPhysExtStart | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtAddref: overflow (1) iShwPT=%d\n", iShwPT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* add another extent to the list. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMPOOLPHYSEXT pNew = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtAddref: added new extent %d:{%d}->%d\n", iPhysExt, iShwPT, iPhysExtStart));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync return iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Add a reference to guest physical page where extents are in use.
6b07d9a23ed1c650aa0a3b8de9d19f51b6b67e9fvboxsync * @returns The new ram range flags (top 16-bits).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param u16 The ram range flags (top 16-bits).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iShwPT The shadow page table index.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncuint16_t pgmPoolTrackPhysExtAddref(PVM pVM, uint16_t u16, uint16_t iShwPT)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if ((u16 >> (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT)) != MM_RAM_FLAGS_CREFS_PHYSEXT)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Convert to extent list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert((u16 >> (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT)) == 1);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMPOOLPHYSEXT pPhysExt = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtAddref: new extent: %d:{%d, %d}\n", iPhysExt, u16 & MM_RAM_FLAGS_IDX_MASK, iShwPT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync u16 = iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync u16 = MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync else if (u16 != (MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT))))
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Insert into the extent list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync u16 = pgmPoolTrackPhysExtInsert(pVM, u16 & MM_RAM_FLAGS_IDX_MASK, iShwPT);
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedLots);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear references to guest physical memory.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPhysPage Pointer to the aPages entry in the ram range.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncvoid pgmPoolTrackPhysExtDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMPAGE pPhysPage)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync const unsigned cRefs = pPhysPage->HCPhys >> MM_RAM_FLAGS_CREFS_SHIFT; /** @todo PAGE FLAGS */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsg(cRefs == MM_RAM_FLAGS_CREFS_PHYSEXT, ("cRefs=%d HCPhys=%RHp pPage=%p:{.idx=%d}\n", cRefs, pPhysPage->HCPhys, pPage, pPage->idx));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync uint16_t iPhysExt = (pPhysPage->HCPhys >> MM_RAM_FLAGS_IDX_SHIFT) & MM_RAM_FLAGS_IDX_MASK;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Look for the shadow page and check if it's all freed.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = 0; i < ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (i = 0; i < ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if (paPhysExts[iPhysExt].aidx[i] != NIL_PGMPOOL_IDX)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d\n", pPhysPage->HCPhys, pPage->idx));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* we can free the node. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync const uint16_t iPhysExtNext = paPhysExts[iPhysExt].iNext;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* lonely node */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d lonely\n", pPhysPage->HCPhys, pPage->idx));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync else if (iPhysExtPrev == NIL_PGMPOOL_PHYSEXT_INDEX)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d head\n", pPhysPage->HCPhys, pPage->idx));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPhysPage->HCPhys = (pPhysPage->HCPhys & MM_RAM_FLAGS_NO_REFS_MASK) /** @todo PAGE FLAGS */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync | ((uint64_t)MM_RAM_FLAGS_CREFS_PHYSEXT << MM_RAM_FLAGS_CREFS_SHIFT)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync | ((uint64_t)iPhysExtNext << MM_RAM_FLAGS_IDX_SHIFT);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* in list */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d\n", pPhysPage->HCPhys, pPage->idx));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsgFailed(("not-found! cRefs=%d HCPhys=%RHp pPage=%p:{.idx=%d}\n", cRefs, pPhysPage->HCPhys, pPage, pPage->idx));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync else /* nothing to do */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64\n", pPhysPage->HCPhys));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear references to guest physical memory.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This is the same as pgmPoolTracDerefGCPhys except that the guest physical address
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * is assumed to be correct, so the linear search can be skipped and we can assert
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * at an earlier point.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param HCPhys The host physical address corresponding to the guest page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param GCPhys The guest physical address corresponding to HCPhys.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic void pgmPoolTracDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhys)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Walk range list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* does it match? */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsgFailed(("HCPhys=%VHp GCPhys=%VGp\n", HCPhys, GCPhys));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear references to guest physical memory.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param HCPhys The host physical address corresponding to the guest page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param GCPhysHint The guest physical address which may corresponding to HCPhys.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic void pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Walk range list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* does it match? */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Damn, the hint didn't work. We'll have to do an expensive linear search.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync STAM_COUNTER_INC(&pPool->StatTrackLinearRamSearches);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
c69ef54ce54c2282a61c82986d2fd748d930719bvboxsync while (iPage-- > 0)
c69ef54ce54c2282a61c82986d2fd748d930719bvboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Log4(("pgmPoolTracDerefGCPhysHint: Linear HCPhys=%VHp GCPhysHint=%VGp GCPhysReal=%VGp\n",
c69ef54ce54c2282a61c82986d2fd748d930719bvboxsync HCPhys, GCPhysHint, pRam->GCPhys + (iPage << PAGE_SHIFT)));
c69ef54ce54c2282a61c82986d2fd748d930719bvboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
c69ef54ce54c2282a61c82986d2fd748d930719bvboxsync AssertFatalMsgFailed(("HCPhys=%VHp GCPhysHint=%VGp\n", HCPhys, GCPhysHint));
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * Clear references to guest physical memory in a 32-bit / 32-bit page table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pShwPT The shadow page table (mapping of the page).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pGstPT The guest page table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(void) pgmPoolTrackDerefPT32Bit32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PT pShwPT, PCX86PT pGstPT)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pShwPT->a); i++)
cf16cbc1c9fba42198dfb26f17a38902284dca48vboxsync Log4(("pgmPoolTrackDerefPT32Bit32Bit: i=%d pte=%RX32 hint=%RX32\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync i, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear references to guest physical memory in a PAE / 32-bit page table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pShwPT The shadow page table (mapping of the page).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pGstPT The guest page table (just a half one).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPae32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT, PCX86PT pGstPT)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log4(("pgmPoolTrackDerefPTPae32Bit: i=%d pte=%RX32 hint=%RX32\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync i, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear references to guest physical memory in a PAE / PAE page table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pShwPT The shadow page table (mapping of the page).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pGstPT The guest page table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT, PCX86PTPAE pGstPT)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log4(("pgmPoolTrackDerefPTPaePae: i=%d pte=%RX32 hint=%RX32\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync i, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PAE_PG_MASK));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PAE_PG_MASK);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear references to guest physical memory in a 32-bit / 4MB page table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pShwPT The shadow page table (mapping of the page).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(void) pgmPoolTrackDerefPT32Bit4MB(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PT pShwPT)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = 0; i < ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log4(("pgmPoolTrackDerefPT32Bit4MB: i=%d pte=%RX32 GCPhys=%RGp\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, GCPhys);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear references to guest physical memory in a PAE / 2/4MB page table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pShwPT The shadow page table (mapping of the page).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaeBig(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = 0; i < ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log4(("pgmPoolTrackDerefPTPae32Bit: i=%d pte=%RX32 hint=%RX32\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, GCPhys);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#endif /* PGMPOOL_WITH_GCPHYS_TRACKING */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear references to shadowed pages in a PAE (legacy or 64 bits) page directory.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPage The page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pShwPD The shadow page directory (mapping of the page).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPAE pShwPD)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & X86_PDE_PAE_PG_MASK);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsgFailed(("%RX64\n", pShwPD->a[i].u & X86_PDE_PAE_PG_MASK));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Clear references to shadowed pages in a 64-bit page directory pointer table.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param pPool The pool.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param pPage The page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPT64Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPT pShwPDPT)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync for (unsigned i = 0; i < ELEMENTS(pShwPDPT->a); i++)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & X86_PDPE_PG_MASK);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync AssertFatalMsgFailed(("%RX64\n", pShwPDPT->a[i].u & X86_PDPE_PG_MASK));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Clears all references made by this page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * This includes other shadow pages and GC physical addresses.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param pPool The pool.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param pPage The page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Map the shadow page and take action according to the page kind.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync void *pvShw = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTXSUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pgmPoolTrackDerefPT32Bit32Bit(pPool, pPage, (PX86PT)pvShw, (PCX86PT)pvGst);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync int rc = PGM_GCPHYS_2_PTR_EX(pPool->CTXSUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pgmPoolTrackDerefPTPae32Bit(pPool, pPage, (PX86PTPAE)pvShw, (PCX86PT)pvGst);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTXSUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pgmPoolTrackDerefPTPaePae(pPool, pPage, (PX86PTPAE)pvShw, (PCX86PTPAE)pvGst);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync case PGMPOOLKIND_32BIT_PT_FOR_PHYS: /* treat it like a 4 MB page */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pgmPoolTrackDerefPT32Bit4MB(pPool, pPage, (PX86PT)pvShw);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync case PGMPOOLKIND_PAE_PT_FOR_PHYS: /* treat it like a 4 MB page */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pgmPoolTrackDerefPTPaeBig(pPool, pPage, (PX86PTPAE)pvShw);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync#else /* !PGMPOOL_WITH_GCPHYS_TRACKING */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync#endif /* !PGMPOOL_WITH_GCPHYS_TRACKING */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pgmPoolTrackDerefPDPae(pPool, pPage, (PX86PDPAE)pvShw);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTrackDerefPDPT64Bit(pPool, pPage, (PX86PDPT)pvShw);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync /* paranoia, clear the shadow page. Remove this laser (i.e. let Alloc and ClearAll do it). */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#endif /* PGMPOOL_WITH_USER_TRACKING */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Flushes all the special root pages as part of a pgmPoolFlushAllInt operation.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic void pgmPoolFlushAllSpecialRoots(PPGMPOOL pPool)
2baa3306795480a7d51024e33733db7bcd14e7bavboxsync * These special pages are all mapped into the indexes 1..PGMPOOL_IDX_FIRST.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Get the page address.
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync * Mark stuff not present.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned iPage = 0; iPage < X86_PG_ENTRIES; iPage++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if ((u.pau32[iPage] & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == X86_PDE_P)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned iPage = 0; iPage < X86_PG_PAE_ENTRIES * X86_PG_PAE_PDPE_ENTRIES; iPage++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync if ((u.pau64[iPage] & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == X86_PDE_P)
8177818e385db2d90f58710d17aa5f66e074f2f6vboxsync for (unsigned iPage = 0; iPage < X86_PG_PAE_ENTRIES; iPage++)
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync if ((u.pau64[iPage] & (PGM_PLXFLAGS_PERMANENT | X86_PML4E_P)) == X86_PML4E_P)
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync /* Not root of shadowed pages currently, ignore it. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Paranoia (to be removed), flag a global CR3 sync.
2baa3306795480a7d51024e33733db7bcd14e7bavboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Flushes the entire cache.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * It will assert a global CR3 flush (FF) and assumes the caller is aware of this
290f895ae2ac655ba90c8904a0e2687d8aa0837dvboxsync * and execute this CR3 flush.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * If there are no pages in the pool, there is nothing to do.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Nuke the free list and reinsert all pages into it.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = pPool->cCurPages - 1; i >= PGMPOOL_IDX_FIRST; i--)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Assert(pPage->Core.Key == MMPage2Phys(pPool->pVMHC, pPage->pvPageHC));
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync pPage->fZeroed = false; /* This could probably be optimized, but better safe than sorry. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPool->aPages[pPool->cCurPages - 1].iNext = NIL_PGMPOOL_IDX;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Zap and reinitialize the user records.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = 0; i < cMaxUsers; i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync paUsers[cMaxUsers - 1].iNext = NIL_PGMPOOL_USER_INDEX;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear all the GCPhys links and rebuild the phys ext free list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
e12084fc5287a5fa65e3a28bbeb05af29c22dad7vboxsync while (iPage-- > 0)
e12084fc5287a5fa65e3a28bbeb05af29c22dad7vboxsync pRam->aPages[iPage].HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Just zap the modified list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Clear the GCPhys hash and the age list.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = 0; i < ELEMENTS(pPool->aiHash); i++)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Flush all the special root pages.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Reinsert active pages into the hash and ensure monitoring chains are correct.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync for (unsigned i = PGMPOOL_IDX_FIRST_SPECIAL; i < PGMPOOL_IDX_FIRST; i++)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync /* ASSUMES that we're not sharing with any of the other special pages (safe for now). */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync int rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1),
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(pVM, pPage),
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Assert(pPage->iUserHead == NIL_PGMPOOL_USER_INDEX); /* for now */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Flushes a pool page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * This moves the page to the free list after removing all user references to it.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * In GC this will cause a CR3 reload if the page is traced back to an active root page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @returns VBox status code.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @retval VINF_SUCCESS on success.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param pPool The pool.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * @param HCPhys The HC physical address of the shadow page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsyncint pgmPoolFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync LogFlow(("pgmPoolFlushPage: pPage=%p:{.Key=%VHp, .idx=%d, .enmKind=%d, .GCPhys=%VGp}\n",
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Quietly reject any attempts at flushing any of the special root pages.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync Log(("pgmPoolFlushPage: specaial root page, rejected. enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Mark the page as being in need of a ASMMemZeroPage().
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Clear the page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Flush it from the cache.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync#endif /* PGMPOOL_WITH_CACHE */
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Deregistering the monitoring.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Free the page.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * Frees a usage of a pool page.
cf16cbc1c9fba42198dfb26f17a38902284dca48vboxsync * The caller is responsible to updating the user table so that it no longer
cf16cbc1c9fba42198dfb26f17a38902284dca48vboxsync * references the shadow page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param HCPhys The HC physical address of the shadow page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUser The shadow page pool index of the user table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUserTable The index into the user table (shadowed).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncvoid pgmPoolFreeByPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolFreeByPage: pPage=%p:{.Key=%VHp, .idx=%d, enmKind=%d} iUser=%#x iUserTable=%#x\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, iUser, iUserTable));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolTrackFreeUser(pPool, pPage, iUser, iUserTable);
d200be7337d4aad2bec2961a885e856f7866d4f6vboxsync pgmPoolFlushPage(pPool, pPage); /* ASSUMES that VERR_PGM_POOL_CLEARED can be ignored here. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Makes one or more free page free.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VINF_SUCCESS on success.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUser The user of the page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncstatic int pgmPoolMakeMoreFreePages(PPGMPOOL pPool, uint16_t iUser)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolMakeMoreFreePages: iUser=%#x\n", iUser));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * If the pool isn't full grown yet, expand it.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync int rc = CTXALLMID(VMM, CallHost)(pPool->CTXSUFF(pVM), VMMCALLHOST_PGM_POOL_GROW, 0);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Free one cached page.
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync * Flush the pool.
c049162517778158b3507c0389358a7342622b99vboxsync * If we have tracking enabled, it should be possible to come up with
c049162517778158b3507c0389358a7342622b99vboxsync * a cheap replacement strategy...
c049162517778158b3507c0389358a7342622b99vboxsync * Allocates a page from the pool.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * This page may actually be a cached page and not in need of any processing
c6ade8a5a12fad69394e7223b7ea170bd729f0f4vboxsync * on the callers part.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns VBox status code.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VINF_SUCCESS if a NEW page was allocated.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VINF_PGM_CACHED_PAGE if a CACHED page was returned.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * For 4MB and 2MB PD entries, it's the first address the
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * shadow PT is covering.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * @param enmKind The kind of mapping.
d7dbbf62e47482dad97a2d17ae567e879b5d57b6vboxsync * @param iUser The shadow page pool index of the user table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUserTable The index into the user table (shadowed).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param ppPage Where to store the pointer to the page. NULL is stored here on failure.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncint pgmPoolAlloc(PVM pVM, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, uint16_t iUser, uint32_t iUserTable, PPPGMPOOLPAGE ppPage)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolAlloc: GCPhys=%VGp enmKind=%d iUser=%#x iUserTable=%#x\n", GCPhys, enmKind, iUser, iUserTable));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync int rc2 = pgmPoolCacheAlloc(pPool, GCPhys, enmKind, iUser, iUserTable, ppPage);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolAlloc: cached returns %Vrc *ppPage=%p:{.Key=%VHp, .idx=%d}\n", rc2, *ppPage, (*ppPage)->Core.Key, (*ppPage)->idx));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Allocate a new one.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync AssertReleaseReturn(iNew != NIL_PGMPOOL_IDX, VERR_INTERNAL_ERROR);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /* unlink the free head */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Initialize it.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPool->cUsedPages++; /* physical handler registration / pgmPoolTrackFlushGCPhysPTsSlow requirement. */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pPage->fSeenNonGlobal = false; /* Set this to 'true' to disable this feature. */
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync * Insert into the tracking and cache. If this fails, free the page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync int rc3 = pgmPoolTrackInsert(pPool, pPage, GCPhys, iUser, iUserTable);
2ddffe5c4ec41abd5bb836588c9a1b0788b9be5dvboxsync Log(("pgmPoolAlloc: returns %Vrc (Insert)\n", rc3));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync#endif /* PGMPOOL_WITH_USER_TRACKING */
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync * Commit the allocation, clear the page and return.
2b114c590cf5a19f8047cd7bde9c7e5ae00aa22bvboxsync LogFlow(("pgmPoolAlloc: returns %Vrc *ppPage=%p:{.Key=%VHp, .idx=%d, .fCached=%RTbool, .fMonitored=%RTbool}\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync rc, pPage, pPage->Core.Key, pPage->idx, pPage->fCached, pPage->fMonitored));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Frees a usage of a pool page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param HCPhys The HC physical address of the shadow page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUser The shadow page pool index of the user table.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param iUserTable The index into the user table (shadowed).
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsyncvoid pgmPoolFree(PVM pVM, RTHCPHYS HCPhys, uint16_t iUser, uint32_t iUserTable)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync LogFlow(("pgmPoolFree: HCPhys=%VHp iUser=%#x iUserTable=%#x\n", HCPhys, iUser, iUserTable));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync pgmPoolFreeByPage(pPool, pgmPoolGetPage(pPool, HCPhys), iUser, iUserTable);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Gets a in-use page in the pool by it's physical address.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @returns Pointer to the page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pVM The VM handle.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param HCPhys The HC physical address of the shadow page.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @remark This function will NEVER return NULL. It will assert if HCPhys is invalid.
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsyncPPGMPOOLPAGE pgmPoolGetPageByHCPhys(PVM pVM, RTHCPHYS HCPhys)
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync /** @todo profile this! */
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync PPGMPOOLPAGE pPage = pgmPoolGetPage(pPool, HCPhys);
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync Log3(("pgmPoolGetPageByHCPhys: HCPhys=%VHp -> %p:{.idx=%d .GCPhys=%VGp .enmKind=%d}\n",
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync HCPhys, pPage, pPage->idx, pPage->GCPhys, pPage->enmKind));
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * Flushes the entire cache.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * It will assert a global CR3 flush (FF) and assumes the caller is aware of this
8f5b7f9f15a5da4efe1115e1be6df372cc1d1818vboxsync * and execute this CR3 flush.
930b5f872e89407f445d4000d4e4aaecaa6a0998vboxsync * @param pPool The pool.