PGMAllPool.cpp revision 7c3417bbf525c03163d54d151a277a981d5d61b6
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * PGM Shadow Page Pool.
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Copyright (C) 2006-2007 Sun Microsystems, Inc.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * available from http://www.virtualbox.org. This file is free software;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * you can redistribute it and/or modify it under the terms of the GNU
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * General Public License (GPL) as published by the Free Software
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
a16eb14ad7a4b5ef91ddc22d3e8e92d930f736fcvboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
1c94c0a63ba68be1a7b2c640e70d7a06464e4fcavboxsync * additional information or have any questions.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/*******************************************************************************
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync* Header Files *
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync*******************************************************************************/
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/*******************************************************************************
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync* Internal Functions *
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync*******************************************************************************/
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind);
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint);
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Checks if the specified page pool kind is for a 4MB or 2MB guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns true if it's the shadow of a 4MB or 2MB guest page, otherwise false.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind The page kind.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(bool) pgmPoolIsBigPage(PGMPOOLKIND enmKind)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Maps a pool page into the current context.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the mapping.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page to map.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* general pages. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->idx < pVM->pgm.s.pPoolGC->cCurPages);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGMGCDynMapHCPage(pVM, pPage->Core.Key, &pv);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* special pages. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertReleaseMsgFailed(("Invalid index %d\n", pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* IN_GC */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Determin the size of a write instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns number of bytes written.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pDis The disassembler state.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic unsigned pgmPoolDisasWriteSize(PDISCPUSTATE pDis)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is very crude and possibly wrong for some opcodes,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * but since it's not really supposed to be called we can
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * probably live with that.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes a chain of pages sharing the same access monitor.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage A page in the chain.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolMonitorChainFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
a11c569636fa6838bd423f4631a9660a5a84204bvboxsync LogFlow(("pgmPoolMonitorChainFlush: Flush page %VGp type=%d\n", pPage->GCPhys, pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Find the list head.
3ecf9412133496b2aeb090cfd33a286404ec59fbvboxsync * Iterate the list flushing each shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (rc2 == VERR_PGM_POOL_CLEARED && rc == VINF_SUCCESS)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * Wrapper for getting the current context pointer to the entry being modified.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the current context mapping of the entry.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault virtual address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The fault physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param cbEntry The entry size.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsyncDECLINLINE(const void *) pgmPoolMonitorGCPtr2CCPtr(PPGMPOOL pPool, RTHCPTR pvFault, RTGCPHYS GCPhysFault, const unsigned cbEntry)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsyncDECLINLINE(const void *) pgmPoolMonitorGCPtr2CCPtr(PPGMPOOL pPool, RTGCPTR pvFault, RTGCPHYS GCPhysFault, const unsigned cbEntry)
78a205e3fc6719d59e8c561b3d287d3a4f879852vboxsync return (const void *)((RTGCUINTPTR)pvFault & ~(RTGCUINTPTR)(cbEntry - 1));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync int rc = pgmRamGCPhys2HCPtr(&pPool->pVMHC->pgm.s, GCPhysFault & ~(RTGCPHYS)(cbEntry - 1), &pvRet);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return (RTHCPTR)((uintptr_t)pvFault & ~(RTHCUINTPTR)(cbEntry - 1));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Process shadow entries before they are changed by the guest.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * For PT entries we will clear them. For PD entries, we'll simply check
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * for mapping conflicts and set the SyncCR3 FF if found.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The head page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The guest physical fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param uAddress In R0 and GC this is the guest context fault address (flat).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * In R3 this is the host context 'fault' address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pCpu The disassembler state for figuring out the write size.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This need not be specified if the caller knows we won't do cross entry accesses.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolMonitorChainChanging(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, RTHCPTR pvAddress, PDISCPUSTATE pCpu)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolMonitorChainChanging(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, RTGCPTR pvAddress, PDISCPUSTATE pCpu)
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync const unsigned off = GCPhysFault & PAGE_OFFSET_MASK;
9782b553bdb12385214a3ac596aff1476bcb7cbdvboxsync const unsigned cbWrite = (pCpu) ? pgmPoolDisasWriteSize(pCpu) : 0;
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync LogFlow(("pgmPoolMonitorChainChanging: %VGv phys=%VGp kind=%d cbWrite=%d\n", pvAddress, GCPhysFault, pPage->enmKind, cbWrite));
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync uShw.pv = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCX86PTE pGstPte = (PCX86PTE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolMonitorChainChanging 32_32: deref %VHp GCPhys %VGp\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, pGstPte->u & X86_PTE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* page/2 sized */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned iShw = (off / sizeof(X86PTE)) & (X86_PG_PAE_ENTRIES - 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCX86PTE pGstPte = (PCX86PTE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolMonitorChainChanging pae_32: deref %VHp GCPhys %VGp\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, pGstPte->u & X86_PTE_PG_MASK));
e02db9e0d46f862430895b82b10e8ecde075cf11vboxsync PCX86PTEPAE pGstPte = (PCX86PTEPAE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
680ca45722ec7123029ced4f88dfad87b397ef52vboxsync Log4(("pgmPoolMonitorChainChanging pae: deref %VHp GCPhys %VGp\n", uShw.pPTPae->a[iShw].u & X86_PTE_PAE_PG_MASK, pGstPte->u & X86_PTE_PAE_PG_MASK));
0e77737b0ba913683e614db11463b31ca67aacbevboxsync /* paranoia / a bit assumptive. */
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PTEPAE);
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync AssertReturnVoid(iShw2 < ELEMENTS(uShw.pPTPae->a));
2d53f6e472561965d363674e17f48d3bdffc24d3vboxsync PCX86PTEPAE pGstPte = (PCX86PTEPAE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
2d53f6e472561965d363674e17f48d3bdffc24d3vboxsync Log4(("pgmPoolMonitorChainChanging pae: deref %VHp GCPhys %VGp\n", uShw.pPTPae->a[iShw2].u & X86_PTE_PAE_PG_MASK, pGstPte->u & X86_PTE_PAE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const unsigned iShw = off / sizeof(X86PTE); // ASSUMING 32-bit guest paging!
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync /* paranoia / a bit assumptive. */
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PTE);
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX32 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPD->a[iShw].u & X86_PDE_PG_MASK, pPage->idx, iShw);
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync unsigned iShw = (off / sizeof(X86PTE)) * 2; // ASSUMING 32-bit guest paging!
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync if ((uShw.pPDPae->a[iShw].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync /* paranoia / a bit assumptive. */
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync && (uShw.pPDPae->a[iShw2].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
d98e61ba075ed7d0b567a5d884bc85d643fe3de7vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPDPae->a[iShw].u & X86_PDE_PAE_PG_MASK, pPage->idx, iShw);
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
03319aeaef07ef63a404237f2cb56199131f4a03vboxsync#ifdef PGMPOOL_INVALIDATE_UPPER_SHADOW_TABLE_ENTRIES
03319aeaef07ef63a404237f2cb56199131f4a03vboxsync /* causes trouble when the guest uses a PDE to refer to the whole page table level structure. (invalidate here; faults later on when it tries
03319aeaef07ef63a404237f2cb56199131f4a03vboxsync * to change the page table entries
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync * -> recheck; probably only applies to the GC case
5e797edc29f96c8367de4fbf5874171c24a89ba7vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
5e797edc29f96c8367de4fbf5874171c24a89ba7vboxsync /* Note: hardcoded PAE implementation dependency */
5e797edc29f96c8367de4fbf5874171c24a89ba7vboxsync (pPage->enmKind == PGMPOOLKIND_PAE_PD_FOR_PAE_PD) ? PGMPOOL_IDX_PAE_PD : pPage->idx,
5e797edc29f96c8367de4fbf5874171c24a89ba7vboxsync (pPage->enmKind == PGMPOOLKIND_PAE_PD_FOR_PAE_PD) ? iShw + (pPage->idx - PGMPOOL_IDX_PAE_PD_0) * X86_PG_PAE_ENTRIES : iShw);
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync /* paranoia / a bit assumptive. */
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDEPAE);
5e797edc29f96c8367de4fbf5874171c24a89ba7vboxsync AssertReturnVoid(iShw2 < ELEMENTS(uShw.pPDPae->a));
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
79b24ef0ab7cd4a03a3571b3954c52ab8b573137vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
03319aeaef07ef63a404237f2cb56199131f4a03vboxsync#ifdef PGMPOOL_INVALIDATE_UPPER_SHADOW_TABLE_ENTRIES
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
9a12d720d4db6c26d09600ddab781ad8df5e1826vboxsync /* Note: hardcoded PAE implementation dependency */
9a12d720d4db6c26d09600ddab781ad8df5e1826vboxsync (pPage->enmKind == PGMPOOLKIND_PAE_PD_FOR_PAE_PD) ? PGMPOOL_IDX_PAE_PD : pPage->idx,
9a12d720d4db6c26d09600ddab781ad8df5e1826vboxsync (pPage->enmKind == PGMPOOLKIND_PAE_PD_FOR_PAE_PD) ? iShw2 + (pPage->idx - PGMPOOL_IDX_PAE_PD_0) * X86_PG_PAE_ENTRIES : iShw2);
7082d29724f6c3788977a51591b0379fd3acbf72vboxsync /* Hopefully this doesn't happen very often:
7082d29724f6c3788977a51591b0379fd3acbf72vboxsync * - touching unused parts of the page
7082d29724f6c3788977a51591b0379fd3acbf72vboxsync * - messing with the bits of pd pointers without changing the physical address
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync if (iShw < X86_PG_PAE_PDPE_ENTRIES) /* don't use ELEMENTS(uShw.pPDPT->a), because that's for long mode only */
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync /* paranoia / a bit assumptive. */
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDPE);
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
f9147fe1eaa4e35287f8f39282c7f92f0d7de0b7vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync Assert(pPage->enmKind == PGMPOOLKIND_64BIT_PD_FOR_64BIT_PD);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync /* paranoia / a bit assumptive. */
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDEPAE);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync AssertReturnVoid(iShw2 < ELEMENTS(uShw.pPDPae->a));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync LogFlow(("pgmPoolMonitorChainChanging: pae pd iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPae->a[iShw2].u));
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync /* Hopefully this doesn't happen very often:
46df4404c8dbbf3672e7aae8cd0b2770356e5b73vboxsync * - messing with the bits of pd pointers without changing the physical address
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync if (!VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync LogFlow(("pgmPoolMonitorChainChanging: pdpt iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPT->a[iShw].u));
50eab0c7ce9efeebd02c186d598f1db900f0c717vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPDPT->a[iShw].u & X86_PDPE_PG_MASK, pPage->idx, iShw);
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync /* paranoia / a bit assumptive. */
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PDPE);
3dde2f85d4cf477621a3128887a2c08a8bca7c01vboxsync LogFlow(("pgmPoolMonitorChainChanging: pdpt iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPDPT->a[iShw2].u));
50eab0c7ce9efeebd02c186d598f1db900f0c717vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPDPT->a[iShw2].u & X86_PDPE_PG_MASK, pPage->idx, iShw2);
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync /* Hopefully this doesn't happen very often:
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync * - messing with the bits of pd pointers without changing the physical address
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync if (!VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync LogFlow(("pgmPoolMonitorChainChanging: pml4 iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPML4->a[iShw].u));
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPML4->a[iShw].u & X86_PML4E_PG_MASK, pPage->idx, iShw);
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync /* paranoia / a bit assumptive. */
e08de24d4792d31b7f2aac29db5cb8840d940009vboxsync const unsigned iShw2 = (off + cbWrite - 1) / sizeof(X86PML4E);
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync LogFlow(("pgmPoolMonitorChainChanging: pml4 iShw2=%#x: %RX64 -> freeing it!\n", iShw2, uShw.pPML4->a[iShw2].u));
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPML4->a[iShw2].u & X86_PML4E_PG_MASK, pPage->idx, iShw2);
65b61798a61dd4c32cce448db1dac70bba8d5cf5vboxsync#endif /* IN_RING0 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Checks if a access could be a fork operation in progress.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Meaning, that the guest is setuping up the parent process for Copy-On-Write.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns true if it's likly that we're forking, otherwise false.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pCpu The disassembled instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param offFault The access offset.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(bool) pgmPoolMonitorIsForking(PPGMPOOL pPool, PDISCPUSTATE pCpu, unsigned offFault)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * i386 linux is using btr to clear X86_PTE_RW.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The functions involved are (2.6.16 source inspection):
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * clear_bit
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * ptep_set_wrprotect
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * copy_one_pte
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * copy_pte_range
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * copy_pmd_range
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * copy_pud_range
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * copy_page_range
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * copy_process
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo Validate that the bit index is X86_PTE_RW. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,Fork));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync * Determine whether the page is likely to have been reused.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns true if we consider the page as being reused for a different purpose.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns false if we consider it to still be a paging page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page in question.
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync * @param pRegFrame Trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pCpu The disassembly info for the faulting insturction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark The REP prefix check is left to the caller because of STOSD/W.
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsyncDECLINLINE(bool) pgmPoolMonitorIsReused(PPGMPOOLPAGE pPage, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu, RTGCPTR pvFault)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync return true;
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync case OP_MOVNTDQ: /* solaris - hwblkclr & hwblkpagecopy */
b9ca93dd1ad44cb8b27679dc5624be2f7b7f7af5vboxsync return true;
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync return true;
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync //if (pPage->fCR3Mix)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync // return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes the page being accessed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The pool page (head).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pCpu The disassembly of the write instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pRegFrame The trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The fault address as guest physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolAccessHandlerFlush(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * First, do the flushing.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Emulate the instruction (xp/w2k problem, requires pc/cr2/sp detection).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc2 = EMInterpretInstructionCPU(pVM, pCpu, pRegFrame, pvFault, &cbWritten);
3964eef78ab9593263a3a982e26216d4d166869cvboxsync if (PATMIsPatchGCAddr(pVM, (RTRCPTR)pRegFrame->eip))
f02b41a7e54fc4e6b714f4e60260d94614d6e2e7vboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv, ignoring.\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->StatMonitorGCIntrFailPatch2);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,EmulateInstr));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* See use in pgmPoolAccessHandlerSimple(). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAccessHandlerPT: returns %Vrc (flushed)\n", rc));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Handles the STOSD write accesses.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The pool page (head).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pCpu The disassembly of the write instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pRegFrame The trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The fault address as guest physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(int) pgmPoolAccessHandlerSTOSD(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Increment the modification counter and insert it into the list
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * of modified pages the first time.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Execute REP STOSD.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This ASSUMES that we're not invoked by Trap0e on in a out-of-sync
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * write situation, meaning that it's safe to write here.
78a205e3fc6719d59e8c561b3d287d3a4f879852vboxsync pgmPoolMonitorChainChanging(pPool, pPage, GCPhysFault, (RTGCPTR)pu32, NULL);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PGMPhysWriteGCPhys(pVM, GCPhysFault, &pRegFrame->eax, 4);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* See use in pgmPoolAccessHandlerSimple(). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Handles the simple write accesses.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code suitable for scheduling.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The pool page (head).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pCpu The disassembly of the write instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pRegFrame The trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The fault address as guest physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(int) pgmPoolAccessHandlerSimple(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Increment the modification counter and insert it into the list
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * of modified pages the first time.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear all the pages. ASSUMES that pvFault is readable.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChanging(pPool, pPage, GCPhysFault, pvFault, pCpu);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Interpret the instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = EMInterpretInstructionCPU(pVM, pCpu, pRegFrame, pvFault, &cb);
a11c569636fa6838bd423f4631a9660a5a84204bvboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv - opcode=%d\n",
47b5427d1a541bcd269bc625c35b19d849071edfvboxsync pRegFrame->cs, (RTGCPTR)pRegFrame->rip, pCpu->pCurInstr->opcode));
a11c569636fa6838bd423f4631a9660a5a84204bvboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,EmulateInstr));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Quick hack, with logging enabled we're getting stale
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * code TLBs but no data TLB for EIP and crash in EMInterpretDisasOne.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushing here is BAD and expensive, I think EMInterpretDisasOne will
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * have to be fixed to support this. But that'll have to wait till next week.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * An alternative is to keep track of the changed PTEs together with the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * GCPhys from the guest PT. This may proove expensive though.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * At the moment, it's VITAL that it's done AFTER the instruction interpreting
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * because we need the stale TLBs in some cases (XP boot). This MUST be fixed properly!
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAccessHandlerSimple: returns %Vrc cb=%d\n", rc, cb));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * \#PF Handler callback for PT write accesses.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code (appropriate for GC return).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM VM Handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param uErrorCode CPU Error code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pRegFrame Trap register frame.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * NULL on DMA and other non CPU access.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvFault The fault address (cr2).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysFault The GC physical address corresponding to pvFault.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pvUser User argument.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), a);
7235946d51c4e7b209b12cefb8a3924660a9d46bvboxsync LogFlow(("pgmPoolAccessHandler: pvFault=%VGv pPage=%p:{.idx=%d} GCPhysFault=%VGp\n", pvFault, pPage, pPage->idx, GCPhysFault));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We should ALWAYS have the list head as user parameter. This
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * is because we use that page to record the changes.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Disassemble the faulting instruction.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = EMInterpretDisasOne(pVM, pRegFrame, &Cpu, NULL);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Check if it's worth dealing with.
0f5d1b2abd9e82c7ee46f1327287c44856604bcbvboxsync bool fReused = false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ( ( pPage->cModifications < 48 /** @todo #define */ /** @todo need to check that it's not mapping EIP. */ /** @todo adjust this! */
e9a217d585085a6a6d129d27ca0d96a1b8e6d0eevboxsync && !(fReused = pgmPoolMonitorIsReused(pPage, pRegFrame, &Cpu, pvFault))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && !pgmPoolMonitorIsForking(pPool, &Cpu, GCPhysFault & PAGE_OFFSET_MASK))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Simple instructions, no REP prefix.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolAccessHandlerSimple(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,Handled), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Windows is frequently doing small memset() operations (netio test 4k+).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We have to deal with these or we'll kill the cache and performance.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && pRegFrame->ecx * 4 <= PAGE_SIZE - ((uintptr_t)pvFault & PAGE_OFFSET_MASK)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync && (pRegFrame->eax == 0 || pRegFrame->eax == 0x80) /* the two values observed. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolAccessHandlerSTOSD(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,RepStosd), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* REP prefix, don't bother. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,RepPrefix));
47b5427d1a541bcd269bc625c35b19d849071edfvboxsync Log4(("pgmPoolAccessHandler: eax=%#x ecx=%#x edi=%#x esi=%#x eip=%VGv opcode=%d prefix=%#x\n",
47b5427d1a541bcd269bc625c35b19d849071edfvboxsync pRegFrame->eax, pRegFrame->ecx, pRegFrame->edi, pRegFrame->esi, pRegFrame->rip, Cpu.pCurInstr->opcode, Cpu.prefix));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Not worth it, so flush it.
c20b837b2c912dd4dcaaa676e15acd2b230108f0vboxsync * If we considered it to be reused, don't to back to ring-3
c20b837b2c912dd4dcaaa676e15acd2b230108f0vboxsync * to emulate failed instructions since we usually cannot
0f5d1b2abd9e82c7ee46f1327287c44856604bcbvboxsync * interpret then. This may be a bit risky, in which case
0f5d1b2abd9e82c7ee46f1327287c44856604bcbvboxsync * the reuse detection must be fixed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = pgmPoolAccessHandlerFlush(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,FlushPage), a);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* !IN_RING3 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_MONITORING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Inserts a page into the GCPhys hash table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolHashInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
96d8c2c77873591a51233b013fc1ec8bc774a096vboxsync Log3(("pgmPoolHashInsert: %VGp\n", pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->GCPhys != NIL_RTGCPHYS); Assert(pPage->iNext == NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Removes a page from the GCPhys hash table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolHashRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
96d8c2c77873591a51233b013fc1ec8bc774a096vboxsync Log3(("pgmPoolHashRemove: %VGp\n", pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertReleaseMsgFailed(("GCPhys=%VGp idx=%#x\n", pPage->GCPhys, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees up one cache page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of a physical handler will cause a light weight pool flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolCacheFreeOne(PPGMPOOL pPool, uint16_t iUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPool->iAgeHead != pPool->iAgeTail); /* We shouldn't be here if there < 2 cached entries! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Select one page from the tail of the age list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync/* This is the alternative to the SyncCR3 pgmPoolCacheUsed calls.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPool->aPages[iToFree].iUserHead != NIL_PGMPOOL_USER_INDEX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync uint16_t i = pPool->aPages[iToFree].iAgePrev;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned j = 0; j < 10 && i != NIL_PGMPOOL_USER_INDEX; j++, i = pPool->aPages[i].iAgePrev)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPool->aPages[iToFree].iUserHead == NIL_PGMPOOL_USER_INDEX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync iToFree = i;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = pgmPoolFlushPage(pPool, &pPool->aPages[iToFree]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Checks if a kind mismatch is really a page being reused
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * or if it's just normal remappings.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns true if reused and the cached page (enmKind1) should be flushed
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns false if not reused.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind1 The kind of the cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind2 The kind of the requested page.
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncstatic bool pgmPoolCacheReusedByKind(PGMPOOLKIND enmKind1, PGMPOOLKIND enmKind2)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Never reuse them. There is no remapping in non-paging mode.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * These cannot be flushed, and it's common to reuse the PDs as PTs.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return false;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Attempts to satisfy a pgmPoolAlloc request from the cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_CACHED_PAGE on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_FILE_NOT_FOUND if not found.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind The kind of mapping.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The shadow page pool index of the user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The index into the user table (shadowed).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param ppPage Where to store the pointer to the page.
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsyncstatic int pgmPoolCacheAlloc(PPGMPOOL pPool, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, uint16_t iUser, uint32_t iUserTable, PPPGMPOOLPAGE ppPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Look up the GCPhys in the hash.
96d8c2c77873591a51233b013fc1ec8bc774a096vboxsync Log3(("pgmPoolCacheAlloc: %VGp kind %d iUser=%d iUserTable=%x SLOT=%d\n", GCPhys, enmKind, iUser, iUserTable, i));
96d8c2c77873591a51233b013fc1ec8bc774a096vboxsync Log3(("pgmPoolCacheAlloc: slot %d found page %VGp\n", i, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = pgmPoolTrackAddUser(pPool, pPage, iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The kind is different. In some cases we should now flush the page
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * as it has been reused, but in most cases this is normal remapping
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * of PDs as PT or big pages using the GCPhys field in a slightly
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * different way than the other kinds.
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync if (pgmPoolCacheReusedByKind((PGMPOOLKIND)pPage->enmKind, enmKind))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFlushPage(pPool, pPage); /* ASSUMES that VERR_PGM_POOL_CLEARED will be returned by pgmPoolTracInsert. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync } while (i != NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheAlloc: Missed GCPhys=%RGp enmKind=%d\n", GCPhys, enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Inserts a page into the cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param fCanBeCached Set if the page is fit for caching from the caller's point of view.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolCacheInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCanBeCached)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert into the GCPhys hash if the page is fit for that.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheInsert: Caching %p:{.Core=%RHp, .idx=%d, .enmKind=%d, GCPhys=%RGp}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolCacheInsert: Not caching %p:{.Core=%RHp, .idx=%d, .enmKind=%d, GCPhys=%RGp}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert at the head of the age list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPool->iAgeHead].iAgePrev = pPage->idx;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes a cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolCacheFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
96d8c2c77873591a51233b013fc1ec8bc774a096vboxsync Log3(("pgmPoolCacheFlushPage: %VGp\n", pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove the page from the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove it from the age list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iAgeNext].iAgePrev = pPage->iAgePrev;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iAgePrev].iAgeNext = pPage->iAgeNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_CACHE */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Looks for pages sharing the monitor.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the head page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns NULL if not found.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The Pool
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pNewPage The page which is going to be monitored.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic PPGMPOOLPAGE pgmPoolMonitorGetPageByGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pNewPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Look up the GCPhys in the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTGCPHYS GCPhys = pNewPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* find the head */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* ignore, no monitoring. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync } while (i != NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Enabled write monitoring of a guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_CLEARED if the registration of the physical handler will cause a light weight pool flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolMonitorInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
c33db29e7b41467a35675031f5f5233839909083vboxsync LogFlow(("pgmPoolMonitorInsert %VGp\n", pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1)));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Filter out the relevant kinds.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Nothing to monitor here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Install handler.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pPageHead = pgmPoolMonitorGetPageByGCPhys(pPool, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPageHead != pPage); Assert(pPageHead->iMonitoredNext != pPage->idx);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPageHead->iMonitoredNext].iMonitoredPrev = pPage->idx;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX); Assert(pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const RTGCPHYS GCPhysPage = pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGMHandlerPhysicalRegisterEx(pVM, PGMPHYSHANDLERTYPE_PHYSICAL_WRITE,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo we should probably deal with out-of-memory conditions here, but for now increasing
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * the heap size should suffice. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pVM->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Disables write monitoring of a guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolMonitorFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Filter out the relevant kinds.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Nothing to monitor here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove the page from the monitored list or uninstall it if last.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pNewHead = &pPool->aPages[pPage->iMonitoredNext];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pNewHead),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pNewHead),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(pVM, pNewHead),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iMonitoredPrev].iMonitoredNext = pPage->iMonitoredNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iMonitoredNext].iMonitoredPrev = pPage->iMonitoredPrev;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc = PGMHandlerPhysicalDeregister(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pVM->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Remove it from the list of modified pages (if in it).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Set or clear the fCR3Mix attribute in a chain of monitored pages.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The Pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage A page in the chain.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param fCR3Mix The new fCR3Mix value.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolMonitorChainChangeCR3Mix(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCR3Mix)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* current */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* before */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* after */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Installs or modifies monitoring of a CR3 page (special).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We're pretending the CR3 page is shadowed by the pool so we can use the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * generic mechanisms in detecting chained monitoring. (This also gives us a
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * tast of what code changes are required to really pool CR3 shadow pages.)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param idxRoot The CR3 (root) page index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysCR3 The (new) CR3 value.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolMonitorMonitorCR3(PPGMPOOL pPool, uint16_t idxRoot, RTGCPHYS GCPhysCR3)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(idxRoot != NIL_PGMPOOL_IDX && idxRoot < PGMPOOL_IDX_FIRST);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorMonitorCR3: idxRoot=%d pPage=%p:{.GCPhys=%VGp, .fMonitored=%d} GCPhysCR3=%VGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync idxRoot, pPage, pPage->GCPhys, pPage->fMonitored, GCPhysCR3));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The unlikely case where it already matches.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flush the current monitoring and remove it from the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, false);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Monitor the page at the new location and insert it into the hash.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, true);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Removes the monitoring of a CR3 page (special).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param idxRoot The CR3 (root) page index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolMonitorUnmonitorCR3(PPGMPOOL pPool, uint16_t idxRoot)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(idxRoot != NIL_PGMPOOL_IDX && idxRoot < PGMPOOL_IDX_FIRST);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorUnmonitorCR3: idxRoot=%d pPage=%p:{.GCPhys=%VGp, .fMonitored=%d}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync idxRoot, pPage, pPage->GCPhys, pPage->fMonitored));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, false);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_MIXED_PT_CR3 */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Inserts the page into the list of modified pages.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolMonitorModifiedInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolMonitorModifiedInsert: idx=%d\n", pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync ("Next=%d Prev=%d idx=%d cModifications=%d Head=%d cModifiedPages=%d\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage->iModifiedNext, pPage->iModifiedPrev, pPage->idx, pPage->cModifications,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPool->iModifiedHead].iModifiedPrev = pPage->idx;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (pPool->cModifiedPages > pPool->cModifiedPagesHigh)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Removes the page from the list of modified pages and resets the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * moficiation counter.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page which is believed to be in the list of modified pages.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolMonitorModifiedRemove: idx=%d cModifications=%d\n", pPage->idx, pPage->cModifications));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = NIL_PGMPOOL_IDX;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iModifiedPrev].iModifiedNext = pPage->iModifiedNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = pPage->iModifiedPrev;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Zaps the list of modified pages, resetting their modification counters in the process.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMonitorModifiedClearAll: cModifiedPages=%d\n", pPool->cModifiedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(cPages == pPool->cModifiedPages, ("%d != %d\n", cPages, pPool->cModifiedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear all shadow pages and clear all modification counters.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark Should only be used when monitoring is available, thus placed in
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * the PGMPOOL_WITH_MONITORING #ifdef.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolClearAll: cUsedPages=%d\n", pPool->cUsedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Iterate all the pages until we've encountered all that in use.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is simple but not quite optimal solution.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync unsigned cModifiedPages = 0; NOREF(cModifiedPages);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We only care about shadow page tables.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync void *pvShw = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* fall thru */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!pPage->cModifications || ++cModifiedPages);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX || pPage->cModifications);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX || pPage->cModifications);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* swipe the special pages too. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (iPage = PGMPOOL_IDX_FIRST_SPECIAL; iPage < PGMPOOL_IDX_FIRST; iPage++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!pPage->cModifications || ++cModifiedPages);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX || pPage->cModifications);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX || pPage->cModifications);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsg(cModifiedPages == pPool->cModifiedPages, ("%d != %d\n", cModifiedPages, pPool->cModifiedPages));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear all the GCPhys links and rebuild the phys ext free list.
c20b837b2c912dd4dcaaa676e15acd2b230108f0vboxsync for (PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync while (iPage-- > 0)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pRam->aPages[iPage].HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * Handle SyncCR3 pool tasks
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @returns VBox status code.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @retval VINF_SUCCESS if successfully added.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @retval VINF_PGM_SYNC_CR3 is it needs to be deferred to ring 3 (GC only)
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @param pVM The VM handle.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * @remark Should only be used when monitoring is available, thus placed in
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * the PGMPOOL_WITH_MONITORING #ifdef.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * When monitoring shadowed pages, we reset the modification counters on CR3 sync.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * Occasionally we will have to clear all the shadow page tables because we wanted
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * to monitor a page which was mapped by too many shadowed page tables. This operation
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync * sometimes refered to as a 'lightweight flush'.
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync if (!(pVM->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL))
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync LogFlow(("SyncCR3: PGM_SYNC_CLEAR_PGM_POOL is set -> VINF_PGM_SYNC_CR3\n"));
69a0f42fa2c531eb2cffb6d6f482d828d9adab34vboxsync VM_FF_SET(pVM, VM_FF_PGM_SYNC_CR3); /** @todo no need to do global sync, right? */
5dda7f07dab8a954e6c4cf2378b15f921e60d9aavboxsync#endif /* PGMPOOL_WITH_MONITORING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees up at least one user entry.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if successfully added.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolTrackFreeOneUser(PPGMPOOL pPool, uint16_t iUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Just free cached pages in a braindead fashion.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo walk the age list backwards and free the first with usage. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync } while (pPool->iUserFreeHead == NIL_PGMPOOL_USER_INDEX);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Lazy approach.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Inserts a page into the cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This will create user node for the page, insert it into the GCPhys
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * hash, and insert it into the age list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if successfully added.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The user table index.
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsyncDECLINLINE(int) pgmPoolTrackInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhys, uint16_t iUser, uint32_t iUserTable)
8a132edc1577cbe2a19cd778c1b2bea6ae5e8515vboxsync LogFlow(("pgmPoolTrackInsert iUser %d iUserTable %d\n", iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Find free a user node.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Unlink the user node from the free list,
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * initialize and insert it into the user list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert into cache and enable monitoring of the guest page if enabled.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Until we implement caching of all levels, including the CR3 one, we'll
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * have to make sure we don't try monitor & cache any recursive reuse of
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * a monitored CR3 page. Because all windows versions are doing this we'll
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * have to be able to do combined access monitoring, CR3 + PT and
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * PD + PT (guest PAE).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We're now cooperating with the CR3 monitor if an uncachable page is found.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if defined(PGMPOOL_WITH_MONITORING) || defined(PGMPOOL_WITH_CACHE)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const bool fCanBeMonitored = true;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync bool fCanBeMonitored = pPool->CTXSUFF(pVM)->pgm.s.GCPhysGstCR3Monitored == NIL_RTGCPHYS
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync || (GCPhys & X86_PTE_PAE_PG_MASK) != (pPool->CTXSUFF(pVM)->pgm.s.GCPhysGstCR3Monitored & X86_PTE_PAE_PG_MASK)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolCacheInsert(pPool, pPage, fCanBeMonitored); /* This can be expanded. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* 'Failed' - free the usage, and keep it in the cache (if enabled). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_MONITORING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# ifdef PGMPOOL_WITH_CACHE /* (only used when the cache is enabled.) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Adds a user reference to a page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This will
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This will move the page to the head of the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if successfully added.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The user table.
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
8a132edc1577cbe2a19cd778c1b2bea6ae5e8515vboxsync LogFlow(("pgmPoolTrackAddUser iUser %d iUserTable %d\n", iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Check that the entry doesn't already exists.
8a132edc1577cbe2a19cd778c1b2bea6ae5e8515vboxsync AssertMsg(paUsers[i].iUser != iUser || paUsers[i].iUserTable != iUserTable, ("%x %x vs new %x %x\n", paUsers[i].iUser, paUsers[i].iUserTable, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Allocate a user node.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Initialize the user node and insert it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Tell the cache to update its replacement stats for this page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync# endif /* PGMPOOL_WITH_CACHE */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a user record associated with a page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This does not clear the entry in the user table, it simply replaces the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * user record to the chain of free records.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The HC physical address of the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The shadow page pool index of the user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The index into the user table (shadowed).
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsyncstatic void pgmPoolTrackFreeUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Unlink and free the specified user entry.
ab1239d8445aa1fd4afddb7d0c8b90bbdc742010vboxsync /* Special: For PAE and 32-bit paging, there is usually no more than one user. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* General: Linear search. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Fatal: didn't find it */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("Didn't find the user entry! iUser=%#x iUserTable=%#x GCPhys=%VGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Gets the entry size of a shadow table.
19b725c530eb49600728765de7ed451cbe290740vboxsync * @param enmKind The kind of page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The size of the entry in bytes. That is, 4 or 8.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * returned.
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Gets the entry size of a guest table.
19b725c530eb49600728765de7ed451cbe290740vboxsync * @param enmKind The kind of page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The size of the entry in bytes. That is, 0, 4 or 8.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * returned.
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo can we return 0? (nobody is calling this...) */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Scans one shadow page table for mappings of a physical page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param pPhysPage The guest page in question.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShw The shadow page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param cRefs The number of references made in that PT.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsyncstatic void pgmPoolTrackFlushGCPhysPTInt(PVM pVM, PCPGMPAGE pPhysPage, uint16_t iShw, uint16_t cRefs)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPT: HCPhys=%RHp iShw=%d cRefs=%d\n", pPhysPage->HCPhys, iShw, cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Assert sanity.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsg(iShw < pPool->cCurPages && iShw != NIL_PGMPOOL_IDX, ("iShw=%d\n", iShw));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Then, clear the actual mappings to the page in the shadow PT.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync const uint32_t u32 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX32 cRefs=%#x\n", i, pPT->a[i], cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if defined(DEBUG) && !defined(IN_RING0) ///@todo RTLogPrintf is missing in R0.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTLogPrintf("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PTPAE pPT = (PX86PTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX64 cRefs=%#x\n", i, pPT->a[i], cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#if defined(DEBUG) && !defined(IN_RING0) ///@todo RTLogPrintf is missing in R0.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync RTLogPrintf("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d iShw=%d\n", pPage->enmKind, iShw));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Scans one shadow page table for mappings of a physical page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param pPhysPage The guest page in question.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShw The shadow page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param cRefs The number of references made in that PT.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsyncvoid pgmPoolTrackFlushGCPhysPT(PVM pVM, PPGMPAGE pPhysPage, uint16_t iShw, uint16_t cRefs)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOL pPool = pVM->pgm.s.CTXSUFF(pPool); NOREF(pPool);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPT: HCPhys=%RHp iShw=%d cRefs=%d\n", pPhysPage->HCPhys, iShw, cRefs));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPT, f);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, iShw, cRefs);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPT, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes a list of shadow page tables mapping the same physical page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync * @param pPhysPage The guest page in question.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPhysExt The physical cross reference extent list to flush.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsyncvoid pgmPoolTrackFlushGCPhysPTs(PVM pVM, PPGMPAGE pPhysPage, uint16_t iPhysExt)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTs, f);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTs: HCPhys=%RHp iPhysExt\n", pPhysPage->HCPhys, iPhysExt));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(pPhysExt->aidx); i++)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, pPhysExt->aidx[i], 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* insert the list into the free list and clear the ram range entry. */
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTs, f);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_GCPHYS_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Scans all shadow page tables for mappings of a physical page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This may be slow, but it's most likely more efficient than cleaning
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * out the entire page pool / cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if all references has been successfully cleared.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_GCPHYS_ALIASED if we're better off with a CR3 sync and
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * a page pool cleaning.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync * @param pPhysPage The guest page in question.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsyncint pgmPoolTrackFlushGCPhysPTsSlow(PVM pVM, PPGMPAGE pPhysPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTsSlow, s);
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: cUsedPages=%d cPresent=%d HCPhys=%RHp\n",
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pPool->cUsedPages, pPool->cPresent, pPhysPage->HCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * There is a limit to what makes sense.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: giving up... (cPresent=%d)\n", pPool->cPresent));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Iterate all the pages until we've encountered all that in use.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is simple but not quite optimal solution.
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * We only care about shadow page tables.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX32\n", iPage, i, pPT->a[i]));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PX86PTPAE pPT = (PX86PTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX64\n", iPage, i, pPT->a[i]));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPT->a[i].u = 0;
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clears the user entry in a user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is used to remove all references to a page when flushing it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackClearPageUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PCPGMPOOLUSER pUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Map the user page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pUserPage = &pPool->aPages[pUser->iUser];
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pUserPage);
1b7f3a92e42fb9cabf96cf31c20481da466edf76vboxsync /* Safety precaution in case we change the paging for other modes too in the future. */
1b7f3a92e42fb9cabf96cf31c20481da466edf76vboxsync Assert(PGMGetHyperCR3(CTXSUFF(pPool->pVM)) != pPage->Core.Key);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Some sanity checks.
e7074f973370e187bac5f4d3dd0cb193b4dfce62vboxsync Assert(!(u.pau32[pUser->iUserTable] & PGM_PDFLAGS_MAPPING));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pUser->iUserTable < 2048 && pUser->iUser == PGMPOOL_IDX_PAE_PD);
e7074f973370e187bac5f4d3dd0cb193b4dfce62vboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PDFLAGS_MAPPING));
e7074f973370e187bac5f4d3dd0cb193b4dfce62vboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
e7074f973370e187bac5f4d3dd0cb193b4dfce62vboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PDFLAGS_MAPPING));
e7074f973370e187bac5f4d3dd0cb193b4dfce62vboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
585f64d6f624f9e683321dabeb21b0eb2e6aa473vboxsync /* GCPhys >> PAGE_SHIFT is the index here */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertMsgFailed(("enmKind=%d\n", pUserPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* VBOX_STRICT */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear the entry in the user page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* 32-bit entries */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* 64-bit entries */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d iUser=%#x iUserTable=%#x\n", pUserPage->enmKind, pUser->iUser, pUser->iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clears all users of a page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackClearPageUsers(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Free all the user records.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Clear enter in user table. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackClearPageUser(pPool, pPage, &paUsers[i]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Free it. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Next. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Allocates a new physical cross reference extent.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the allocated extent on success. NULL if we're out of them.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param piPhysExt Where to store the phys ext index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncPPGMPOOLPHYSEXT pgmPoolTrackPhysExtAlloc(PVM pVM, uint16_t *piPhysExt)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->StamTrackPhysExtAllocFailures);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT pPhysExt = &pPool->CTXSUFF(paPhysExts)[iPhysExt];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a physical cross reference extent.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPhysExt The extent to free.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackPhysExtFree(PVM pVM, uint16_t iPhysExt)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT pPhysExt = &pPool->CTXSUFF(paPhysExts)[iPhysExt];
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(pPhysExt->aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a physical cross reference extent.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPhysExt The extent to free.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncvoid pgmPoolTrackPhysExtFreeList(PVM pVM, uint16_t iPhysExt)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(pPhysExt->aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert a reference into a list of physical cross reference extents.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The new ram range flags (top 16-bits).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iPhysExt The physical extent index of the list head.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShwPT The shadow page table index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic uint16_t pgmPoolTrackPhysExtInsert(PVM pVM, uint16_t iPhysExt, uint16_t iShwPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* special common case. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[2] == NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedMany);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: %d:{,,%d}\n", iPhysExt, iShwPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* general treatment. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[i] == NIL_PGMPOOL_IDX)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedMany);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: %d:{%d} i=%d cMax=%d\n", iPhysExt, iShwPT, i, cMax));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return iPhysExtStart | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: overflow (1) iShwPT=%d\n", iShwPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* add another extent to the list. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT pNew = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: added new extent %d:{%d}->%d\n", iPhysExt, iShwPT, iPhysExtStart));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync return iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Add a reference to guest physical page where extents are in use.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns The new ram range flags (top 16-bits).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param u16 The ram range flags (top 16-bits).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iShwPT The shadow page table index.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncuint16_t pgmPoolTrackPhysExtAddref(PVM pVM, uint16_t u16, uint16_t iShwPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((u16 >> (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT)) != MM_RAM_FLAGS_CREFS_PHYSEXT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Convert to extent list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert((u16 >> (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT)) == 1);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT pPhysExt = pgmPoolTrackPhysExtAlloc(pVM, &iPhysExt);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolTrackPhysExtAddref: new extent: %d:{%d, %d}\n", iPhysExt, u16 & MM_RAM_FLAGS_IDX_MASK, iShwPT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u16 = iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u16 = MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else if (u16 != (MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT))))
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert into the extent list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u16 = pgmPoolTrackPhysExtInsert(pVM, u16 & MM_RAM_FLAGS_IDX_MASK, iShwPT);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pVM->pgm.s.StatTrackAliasedLots);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync * @param pPhysPage Pointer to the aPages entry in the ram range.
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsyncvoid pgmPoolTrackPhysExtDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PPGMPAGE pPhysPage)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync const unsigned cRefs = pPhysPage->HCPhys >> MM_RAM_FLAGS_CREFS_SHIFT; /** @todo PAGE FLAGS */
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync AssertFatalMsg(cRefs == MM_RAM_FLAGS_CREFS_PHYSEXT, ("cRefs=%d HCPhys=%RHp pPage=%p:{.idx=%d}\n", cRefs, pPhysPage->HCPhys, pPage, pPage->idx));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync uint16_t iPhysExt = (pPhysPage->HCPhys >> MM_RAM_FLAGS_IDX_SHIFT) & MM_RAM_FLAGS_IDX_MASK;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Look for the shadow page and check if it's all freed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (i = 0; i < ELEMENTS(paPhysExts[iPhysExt].aidx); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if (paPhysExts[iPhysExt].aidx[i] != NIL_PGMPOOL_IDX)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d\n", pPhysPage->HCPhys, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* we can free the node. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync const uint16_t iPhysExtNext = paPhysExts[iPhysExt].iNext;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* lonely node */
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d lonely\n", pPhysPage->HCPhys, pPage->idx));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else if (iPhysExtPrev == NIL_PGMPOOL_PHYSEXT_INDEX)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d head\n", pPhysPage->HCPhys, pPage->idx));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pPhysPage->HCPhys = (pPhysPage->HCPhys & MM_RAM_FLAGS_NO_REFS_MASK) /** @todo PAGE FLAGS */
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync | ((uint64_t)MM_RAM_FLAGS_CREFS_PHYSEXT << MM_RAM_FLAGS_CREFS_SHIFT)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync | ((uint64_t)iPhysExtNext << MM_RAM_FLAGS_IDX_SHIFT);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* in list */
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d\n", pPhysPage->HCPhys, pPage->idx));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync AssertFatalMsgFailed(("not-found! cRefs=%d HCPhys=%RHp pPage=%p:{.idx=%d}\n", cRefs, pPhysPage->HCPhys, pPage, pPage->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync else /* nothing to do */
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64\n", pPhysPage->HCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This is the same as pgmPoolTracDerefGCPhys except that the guest physical address
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * is assumed to be correct, so the linear search can be skipped and we can assert
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * at an earlier point.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The host physical address corresponding to the guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys The guest physical address corresponding to HCPhys.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTracDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Walk range list.
c20b837b2c912dd4dcaaa676e15acd2b230108f0vboxsync PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* does it match? */
fe49486f3c0fc3c327138e9a8f9ea9911d7c0d64vboxsyncRTHCPHYS HCPhysPage = PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]);
fe49486f3c0fc3c327138e9a8f9ea9911d7c0d64vboxsyncLog(("pgmPoolTracDerefGCPhys %VHp vs %VHp\n", HCPhysPage, HCPhys));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("HCPhys=%VHp GCPhys=%VGp\n", HCPhys, GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The host physical address corresponding to the guest page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhysHint The guest physical address which may corresponding to HCPhys.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Walk range list.
c20b837b2c912dd4dcaaa676e15acd2b230108f0vboxsync PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* does it match? */
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Damn, the hint didn't work. We'll have to do an expensive linear search.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_COUNTER_INC(&pPool->StatTrackLinearRamSearches);
c20b837b2c912dd4dcaaa676e15acd2b230108f0vboxsync pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync while (iPage-- > 0)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync if (PGM_PAGE_GET_HCPHYS(&pRam->aPages[iPage]) == HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTracDerefGCPhysHint: Linear HCPhys=%VHp GCPhysHint=%VGp GCPhysReal=%VGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync HCPhys, GCPhysHint, pRam->GCPhys + (iPage << PAGE_SHIFT)));
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pgmTrackDerefGCPhys(pPool, pPage, &pRam->aPages[iPage]);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("HCPhys=%VHp GCPhysHint=%VGp\n", HCPhys, GCPhysHint));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a 32-bit / 32-bit page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pGstPT The guest page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPT32Bit32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PT pShwPT, PCX86PT pGstPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pShwPT->a); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPT32Bit32Bit: i=%d pte=%RX32 hint=%RX32\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a PAE / 32-bit page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pGstPT The guest page table (just a half one).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPae32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT, PCX86PT pGstPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPTPae32Bit: i=%d pte=%RX32 hint=%RX32\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a PAE / PAE page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pGstPT The guest page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT, PCX86PTPAE pGstPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPTPaePae: i=%d pte=%RX32 hint=%RX32\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync i, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PAE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PAE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a 32-bit / 4MB page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPT32Bit4MB(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PT pShwPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log4(("pgmPoolTrackDerefPT32Bit4MB: i=%d pte=%RX32 GCPhys=%RGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, GCPhys);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to guest physical memory in a PAE / 2/4MB page table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPT The shadow page table (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPTPaeBig(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(pShwPT->a); i++, GCPhys += PAGE_SIZE)
03b30e5529d152055c46b6a3d9798bbdebb98f82vboxsync Log4(("pgmPoolTrackDerefPTPaeBig: i=%d pte=%RX64 hint=%VGp\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTracDerefGCPhys(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, GCPhys);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_GCPHYS_TRACKING */
10e1bc06b2908a0af56d92ffdbadd25b36a5ef61vboxsync * Clear references to shadowed pages in a PAE (legacy or 64 bits) page directory.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pShwPD The shadow page directory (mapping of the page).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPAE pShwPD)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & X86_PDE_PAE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("%RX64\n", pShwPD->a[i].u & X86_PDE_PAE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear references to shadowed pages in a 64-bit page directory pointer table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync * @param pShwPDPT The shadow page directory pointer table (mapping of the page).
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsyncDECLINLINE(void) pgmPoolTrackDerefPDPT64Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PDPT pShwPDPT)
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync for (unsigned i = 0; i < ELEMENTS(pShwPDPT->a); i++)
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & X86_PDPE_PG_MASK);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync AssertFatalMsgFailed(("%RX64\n", pShwPDPT->a[i].u & X86_PDPE_PG_MASK));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * Clear references to shadowed pages in a 64-bit level 4 page table.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * @param pPool The pool.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * @param pPage The page.
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync * @param pShwPML4 The shadow page directory pointer table (mapping of the page).
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsyncDECLINLINE(void) pgmPoolTrackDerefPML464Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PML4 pShwPML4)
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync for (unsigned i = 0; i < ELEMENTS(pShwPML4->a); i++)
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPML4->a[i].u & X86_PDPE_PG_MASK);
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync pgmPoolTrackFreeUser(pPool, pSubPage, pPage->idx, i);
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync AssertFatalMsgFailed(("%RX64\n", pShwPML4->a[i].u & X86_PML4E_PG_MASK));
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync /** @todo 64-bit guests: have to ensure that we're not exhausting the dynamic mappings! */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clears all references made by this page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This includes other shadow pages and GC physical addresses.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPage The page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Map the shadow page and take action according to the page kind.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync void *pvShw = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTXSUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPT32Bit32Bit(pPool, pPage, (PX86PT)pvShw, (PCX86PT)pvGst);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGM_GCPHYS_2_PTR_EX(pPool->CTXSUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPTPae32Bit(pPool, pPage, (PX86PTPAE)pvShw, (PCX86PT)pvGst);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGM_GCPHYS_2_PTR(pPool->CTXSUFF(pVM), pPage->GCPhys, &pvGst); AssertReleaseRC(rc);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPTPaePae(pPool, pPage, (PX86PTPAE)pvShw, (PCX86PTPAE)pvGst);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
9c425bdea5f0991df62922b1584b805a86f2f898vboxsync case PGMPOOLKIND_32BIT_PT_FOR_PHYS: /* treat it like a 4 MB page */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPT32Bit4MB(pPool, pPage, (PX86PT)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
9c425bdea5f0991df62922b1584b805a86f2f898vboxsync case PGMPOOLKIND_PAE_PT_FOR_PHYS: /* treat it like a 4 MB page */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_START(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPTPaeBig(pPool, pPage, (PX86PTPAE)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync STAM_PROFILE_STOP(&pPool->StatTrackDerefGCPhys, g);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#else /* !PGMPOOL_WITH_GCPHYS_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* !PGMPOOL_WITH_GCPHYS_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackDerefPDPae(pPool, pPage, (PX86PDPAE)pvShw);
8f7bc6ad2b7bbcb4b3b96248cd2478e45f2e3b88vboxsync pgmPoolTrackDerefPDPT64Bit(pPool, pPage, (PX86PDPT)pvShw);
40f47bc231ff6c86a7ddc3295eed7010e889e78avboxsync pgmPoolTrackDerefPML464Bit(pPool, pPage, (PX86PML4)pvShw);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* paranoia, clear the shadow page. Remove this laser (i.e. let Alloc and ClearAll do it). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_USER_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes all the special root pages as part of a pgmPoolFlushAllInt operation.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic void pgmPoolFlushAllSpecialRoots(PPGMPOOL pPool)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * These special pages are all mapped into the indexes 1..PGMPOOL_IDX_FIRST.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Get the page address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Mark stuff not present.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned iPage = 0; iPage < X86_PG_ENTRIES; iPage++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((u.pau32[iPage] & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == X86_PDE_P)
19ec3aeb41eef3f3c5fd02d2412f01811ef6fcf8vboxsync for (unsigned iPage = 0; iPage < X86_PG_PAE_ENTRIES * X86_PG_PAE_PDPE_ENTRIES; iPage++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync if ((u.pau64[iPage] & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == X86_PDE_P)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* Not root of shadowed pages currently, ignore it. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Paranoia (to be removed), flag a global CR3 sync.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes the entire cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * It will assert a global CR3 flush (FF) and assumes the caller is aware of this
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * and execute this CR3 flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * If there are no pages in the pool, there is nothing to do.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Nuke the free list and reinsert all pages into it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = pPool->cCurPages - 1; i >= PGMPOOL_IDX_FIRST; i--)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->Core.Key == MMPage2Phys(pPool->pVMHC, pPage->pvPageHC));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage->fZeroed = false; /* This could probably be optimized, but better safe than sorry. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->aPages[pPool->cCurPages - 1].iNext = NIL_PGMPOOL_IDX;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Zap and reinitialize the user records.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < cMaxUsers; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paUsers[cMaxUsers - 1].iNext = NIL_PGMPOOL_USER_INDEX;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear all the GCPhys links and rebuild the phys ext free list.
c20b837b2c912dd4dcaaa676e15acd2b230108f0vboxsync for (PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync while (iPage-- > 0)
aaeb2e2f6ed5b164f1dec9a16a7adeb84f64cf31vboxsync pRam->aPages[iPage].HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Just zap the modified list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear the GCPhys hash and the age list.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = 0; i < ELEMENTS(pPool->aiHash); i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flush all the special root pages.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Reinsert active pages into the hash and ensure monitoring chains are correct.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync for (unsigned i = PGMPOOL_IDX_FIRST_SPECIAL; i < PGMPOOL_IDX_FIRST; i++)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* ASSUMES that we're not sharing with any of the other special pages (safe for now). */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(pVM, pPage),
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Assert(pPage->iUserHead == NIL_PGMPOOL_USER_INDEX); /* for now */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes a pool page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This moves the page to the free list after removing all user references to it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * In GC this will cause a CR3 reload if the page is traced back to an active root page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The HC physical address of the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncint pgmPoolFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolFlushPage: pPage=%p:{.Key=%VHp, .idx=%d, .enmKind=%d, .GCPhys=%VGp}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Quietly reject any attempts at flushing any of the special root pages.
1b7f3a92e42fb9cabf96cf31c20481da466edf76vboxsync Log(("pgmPoolFlushPage: special root page, rejected. enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
1b7f3a92e42fb9cabf96cf31c20481da466edf76vboxsync * Quietly reject any attempts at flushing the currently active shadow CR3 mapping
9ddf48fac91d47ba87a5255bbd0993297bb16084vboxsync if ( pPage->enmKind == PGMPOOLKIND_64BIT_PML4_FOR_64BIT_PML4
615ecb2ace626d419c16e13e92c11ec80d52da18vboxsync && PGMGetHyperCR3(CTXSUFF(pPool->pVM)) == pPage->Core.Key)
1b7f3a92e42fb9cabf96cf31c20481da466edf76vboxsync Log(("pgmPoolFlushPage: current active shadow CR3, rejected. enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
1b7f3a92e42fb9cabf96cf31c20481da466edf76vboxsync /* Safety precaution in case we change the paging for other modes too in the future. */
1b7f3a92e42fb9cabf96cf31c20481da466edf76vboxsync AssertFatal(PGMGetHyperCR3(CTXSUFF(pPool->pVM)) != pPage->Core.Key);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Mark the page as being in need of a ASMMemZeroPage().
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Clear the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flush it from the cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_CACHE */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Deregistering the monitoring.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Free the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a usage of a pool page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * The caller is responsible to updating the user table so that it no longer
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * references the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The HC physical address of the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The shadow page pool index of the user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The index into the user table (shadowed).
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsyncvoid pgmPoolFreeByPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint32_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolFreeByPage: pPage=%p:{.Key=%VHp, .idx=%d, enmKind=%d} iUser=%#x iUserTable=%#x\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolTrackFreeUser(pPool, pPage, iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pgmPoolFlushPage(pPool, pPage); /* ASSUMES that VERR_PGM_POOL_CLEARED can be ignored here. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Makes one or more free page free.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS on success.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The user of the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncstatic int pgmPoolMakeMoreFreePages(PPGMPOOL pPool, uint16_t iUser)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolMakeMoreFreePages: iUser=%#x\n", iUser));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * If the pool isn't full grown yet, expand it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc = CTXALLMID(VMM, CallHost)(pPool->CTXSUFF(pVM), VMMCALLHOST_PGM_POOL_GROW, 0);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Free one cached page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flush the pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * If we have tracking enabled, it should be possible to come up with
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * a cheap replacement strategy...
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Allocates a page from the pool.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * This page may actually be a cached page and not in need of any processing
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * on the callers part.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns VBox status code.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_SUCCESS if a NEW page was allocated.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VINF_PGM_CACHED_PAGE if a CACHED page was returned.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * For 4MB and 2MB PD entries, it's the first address the
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * shadow PT is covering.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param enmKind The kind of mapping.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The shadow page pool index of the user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The index into the user table (shadowed).
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param ppPage Where to store the pointer to the page. NULL is stored here on failure.
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsyncint pgmPoolAlloc(PVM pVM, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, uint16_t iUser, uint32_t iUserTable, PPPGMPOOLPAGE ppPage)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAlloc: GCPhys=%VGp enmKind=%d iUser=%#x iUserTable=%#x\n", GCPhys, enmKind, iUser, iUserTable));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc2 = pgmPoolCacheAlloc(pPool, GCPhys, enmKind, iUser, iUserTable, ppPage);
ab1239d8445aa1fd4afddb7d0c8b90bbdc742010vboxsync LogFlow(("pgmPoolAlloc: cached returns %Vrc *ppPage=%p:{.Key=%VHp, .idx=%d}\n", rc2, *ppPage, (*ppPage)->Core.Key, (*ppPage)->idx));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Allocate a new one.
2ffc52f053cede3708ecafe59be448d8872e226dvboxsync Log(("pgmPoolMakeMoreFreePages failed with %Vrc -> return VERR_PGM_POOL_FLUSHED\n", rc));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync AssertReleaseReturn(iNew != NIL_PGMPOOL_IDX, VERR_INTERNAL_ERROR);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /* unlink the free head */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Initialize it.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPool->cUsedPages++; /* physical handler registration / pgmPoolTrackFlushGCPhysPTsSlow requirement. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync pPage->fSeenNonGlobal = false; /* Set this to 'true' to disable this feature. */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Insert into the tracking and cache. If this fails, free the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync int rc3 = pgmPoolTrackInsert(pPool, pPage, GCPhys, iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log(("pgmPoolAlloc: returns %Vrc (Insert)\n", rc3));
2ffc52f053cede3708ecafe59be448d8872e226dvboxsync Log(("pgmPoolTrackInsert failed with %Vrc -> return VERR_PGM_POOL_FLUSHED\n", rc3));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync#endif /* PGMPOOL_WITH_USER_TRACKING */
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Commit the allocation, clear the page and return.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolAlloc: returns %Vrc *ppPage=%p:{.Key=%VHp, .idx=%d, .fCached=%RTbool, .fMonitored=%RTbool}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync rc, pPage, pPage->Core.Key, pPage->idx, pPage->fCached, pPage->fMonitored));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Frees a usage of a pool page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The HC physical address of the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUser The shadow page pool index of the user table.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param iUserTable The index into the user table (shadowed).
afed5ab737f4aacfae3fe73776f40e989190a7cavboxsyncvoid pgmPoolFree(PVM pVM, RTHCPHYS HCPhys, uint16_t iUser, uint32_t iUserTable)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync LogFlow(("pgmPoolFree: HCPhys=%VHp iUser=%#x iUserTable=%#x\n", HCPhys, iUser, iUserTable));
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync pgmPoolFreeByPage(pPool, pgmPoolGetPage(pPool, HCPhys), iUser, iUserTable);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Gets a in-use page in the pool by it's physical address.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @returns Pointer to the page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pVM The VM handle.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param HCPhys The HC physical address of the shadow page.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @remark This function will NEVER return NULL. It will assert if HCPhys is invalid.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsyncPPGMPOOLPAGE pgmPoolGetPageByHCPhys(PVM pVM, RTHCPHYS HCPhys)
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync /** @todo profile this! */
223cf005b18af2c21352a70693ebaf0582f68ebcvboxsync PPGMPOOLPAGE pPage = pgmPoolGetPage(pPool, HCPhys);
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync Log3(("pgmPoolGetPageByHCPhys: HCPhys=%VHp -> %p:{.idx=%d .GCPhys=%VGp .enmKind=%d}\n",
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync HCPhys, pPage, pPage->idx, pPage->GCPhys, pPage->enmKind));
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * Flushes the entire cache.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * It will assert a global CR3 flush (FF) and assumes the caller is aware of this
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * and execute this CR3 flush.
d408b82da0773c7e8cd4b3a01cb8a065a2c73a2dvboxsync * @param pPool The pool.