PGMAllPool.cpp revision 440444d68cda7866c59e2e3d3f236608ef1c316f
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * PGM Shadow Page Pool.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Copyright (C) 2006-2007 innotek GmbH
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * available from http://www.virtualbox.org. This file is free software;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * you can redistribute it and/or modify it under the terms of the GNU
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * General Public License (GPL) as published by the Free Software
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync/*******************************************************************************
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync* Header Files *
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync*******************************************************************************/
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync/*******************************************************************************
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync* Internal Functions *
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync*******************************************************************************/
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncstatic void pgmPoolTrackDeref(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncstatic void pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint16_t iUserTable);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Checks if the specified page pool kind is for a 4MB or 2MB guest page.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @returns true if it's the shadow of a 4MB or 2MB guest page, otherwise false.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param enmKind The page kind.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsyncDECLINLINE(bool) pgmPoolIsBigPage(PGMPOOLKIND enmKind)
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync return true;
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync return false;
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Maps a pool page into the current context.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @returns Pointer to the mapping.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pVM The VM handle.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pPage The page to map.
b1cc3e87518139898395f96974ecff9e6bf228fbvboxsync /* general pages. */
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync Assert(pPage->idx < pVM->pgm.s.pPoolGC->cCurPages);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync int rc = PGMGCDynMapHCPage(pVM, pPage->Core.Key, &pv);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync /* special pages. */
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync AssertReleaseMsgFailed(("Invalid index %d\n", pPage->idx));
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync#endif /* IN_GC */
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Determin the size of a write instruction.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @returns number of bytes written.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pDis The disassembler state.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsyncstatic unsigned pgmPoolDisasWriteSize(PDISCPUSTATE pDis)
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * This is very crude and possibly wrong for some opcodes,
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * but since it's not really supposed to be called we can
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * probably live with that.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * Flushes a chain of pages sharing the same access monitor.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @returns VBox status code suitable for scheduling.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @param pPool The pool.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pPage A page in the chain.
388b6b190a5407548753b7fde12fa58134ec3563vboxsyncint pgmPoolMonitorChainFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * Find the list head.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * Itereate the list flushing each shadow page.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync if (rc2 == VERR_PGM_POOL_CLEARED && rc == VINF_SUCCESS)
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * Wrapper for getting the current context pointer to the entry being modified.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @returns Pointer to the current context mapping of the entry.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @param pPool The pool.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @param pvFault The fault virtual address.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param GCPhysFault The fault physical address.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param cbEntry The entry size.
5366e994777f9d9391cf809dc77610f57270d75dvboxsyncDECLINLINE(const void *) pgmPoolMonitorGCPtr2CCPtr(PPGMPOOL pPool, RTHCPTR pvFault, RTGCPHYS GCPhysFault, const unsigned cbEntry)
5366e994777f9d9391cf809dc77610f57270d75dvboxsyncDECLINLINE(const void *) pgmPoolMonitorGCPtr2CCPtr(PPGMPOOL pPool, RTGCPTR pvFault, RTGCPHYS GCPhysFault, const unsigned cbEntry)
388b6b190a5407548753b7fde12fa58134ec3563vboxsync return (RTGCPTR)((RTGCUINTPTR)pvFault & ~(RTGCUINTPTR)(cbEntry - 1));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync int rc = pgmRamGCPhys2HCPtr(&pPool->pVMHC->pgm.s, GCPhysFault & ~(RTGCPHYS)(cbEntry - 1), &pvRet);
388b6b190a5407548753b7fde12fa58134ec3563vboxsync return (RTHCPTR)((uintptr_t)pvFault & ~(RTHCUINTPTR)(cbEntry - 1));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * Process shadow entries before they are changed by the guest.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * For PT entries we will clear them. For PD entries, we'll simply check
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * for mapping conflicts and set the SyncCR3 FF if found.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @param pPool The pool.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @param pPage The head page.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @param GCPhysFault The guest physical fault address.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @param uAddress In R0 and GC this is the guest context fault address (flat).
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * In R3 this is the host context 'fault' address.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * @param pCpu The disassembler state for figuring out the write size.
388b6b190a5407548753b7fde12fa58134ec3563vboxsync * This need not be specified if the caller knows we won't do cross entry accesses.
388b6b190a5407548753b7fde12fa58134ec3563vboxsyncvoid pgmPoolMonitorChainChanging(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, RTHCPTR pvAddress, PDISCPUSTATE pCpu)
388b6b190a5407548753b7fde12fa58134ec3563vboxsyncvoid pgmPoolMonitorChainChanging(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhysFault, RTGCPTR pvAddress, PDISCPUSTATE pCpu)
388b6b190a5407548753b7fde12fa58134ec3563vboxsync const unsigned off = GCPhysFault & PAGE_OFFSET_MASK;
388b6b190a5407548753b7fde12fa58134ec3563vboxsync LogFlow(("pgmPoolMonitorChainChanging: %VGv phys=%VGp kind=%d\n", pvAddress, GCPhysFault, pPage->enmKind));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync uShw.pv = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
388b6b190a5407548753b7fde12fa58134ec3563vboxsync PCX86PTE pGstPte = (PCX86PTE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync 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));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync /* page/2 sized */
388b6b190a5407548753b7fde12fa58134ec3563vboxsync const unsigned iShw = (off / sizeof(X86PTE)) & (X86_PG_PAE_ENTRIES - 1);
388b6b190a5407548753b7fde12fa58134ec3563vboxsync PCX86PTE pGstPte = (PCX86PTE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync 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));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync PCX86PTEPAE pGstPte = (PCX86PTEPAE)pgmPoolMonitorGCPtr2CCPtr(pPool, pvAddress, GCPhysFault, sizeof(*pGstPte));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync Log4(("pgmPoolMonitorChainChanging pae_32: deref %VHp GCPhys %VGp\n", uShw.pPT->a[iShw].u & X86_PTE_PAE_PG_MASK, pGstPte->u & X86_PTE_PAE_PG_MASK));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync const unsigned iShw = off / sizeof(X86PTE); // ASSUMING 32-bit guest paging!
388b6b190a5407548753b7fde12fa58134ec3563vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync /* paranoia / a bit assumptive. (sizeof(X86PTE) - 1 = 3)*/
5366e994777f9d9391cf809dc77610f57270d75dvboxsync const unsigned iShw2 = (off + pgmPoolDisasWriteSize(pCpu) - 1) / sizeof(X86PTE);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
5366e994777f9d9391cf809dc77610f57270d75dvboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
5366e994777f9d9391cf809dc77610f57270d75dvboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX32 -> freeing it!\n", iShw, uShw.pPD->a[iShw].u));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
388b6b190a5407548753b7fde12fa58134ec3563vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPD->a[iShw].u & X86_PDE_PG_MASK, pPage->idx, iShw);
388b6b190a5407548753b7fde12fa58134ec3563vboxsync unsigned iShw = off / sizeof(X86PTEPAE); // ASSUMING PAE guest paging!
388b6b190a5407548753b7fde12fa58134ec3563vboxsync if ((uShw.pPDPae->a[iShw].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
388b6b190a5407548753b7fde12fa58134ec3563vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
388b6b190a5407548753b7fde12fa58134ec3563vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw=%#x!\n", iShw));
388b6b190a5407548753b7fde12fa58134ec3563vboxsync /* paranoia / a bit assumptive. (sizeof(X86PTEPAE) - 1 = 7)*/
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync const unsigned iShw2 = (off + pgmPoolDisasWriteSize(pCpu) - 1) / sizeof(X86PTEPAE);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync && (uShw.pPDPae->a[iShw2].u & (PGM_PDFLAGS_MAPPING | X86_PDE_P)) == (PGM_PDFLAGS_MAPPING | X86_PDE_P))
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync Assert(pgmMapAreMappingsEnabled(&pPool->CTXSUFF(pVM)->pgm.s));
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync VM_FF_SET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync LogFlow(("pgmPoolMonitorChainChanging: Detected conflict at iShw2=%#x!\n", iShw2));
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync#if 0 /* useful when running PGMAssertCR3(), a bit too troublesome for general use (TLBs). */
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync && !VM_FF_ISSET(pPool->CTXSUFF(pVM), VM_FF_PGM_SYNC_CR3))
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync LogFlow(("pgmPoolMonitorChainChanging: iShw=%#x: %RX64 -> freeing it!\n", iShw, uShw.pPDPae->a[iShw].u));
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync# ifdef IN_GC /* TLB load - we're pushing things a bit... */
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync pgmPoolFree(pPool->CTXSUFF(pVM), uShw.pPDPae->a[iShw].u & X86_PDE_PAE_PG_MASK, pPage->idx, iShw);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync AssertFatalMsgFailed(("enmKind=%d\n", pPage->enmKind));
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Checks if a access could be a fork operation in progress.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Meaning, that the guest is setuping up the parent process for Copy-On-Write.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @returns true if it's likly that we're forking, otherwise false.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pPool The pool.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pCpu The disassembled instruction.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param offFault The access offset.
5366e994777f9d9391cf809dc77610f57270d75dvboxsyncDECLINLINE(bool) pgmPoolMonitorIsForking(PPGMPOOL pPool, PDISCPUSTATE pCpu, unsigned offFault)
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * i386 linux is using btr to clear X86_PTE_RW.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * The functions involved are (2.6.16 source inspection):
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * clear_bit
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * ptep_set_wrprotect
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * copy_one_pte
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * copy_pte_range
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * copy_pmd_range
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * copy_pud_range
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * copy_page_range
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * copy_process
5366e994777f9d9391cf809dc77610f57270d75dvboxsync /** @todo Validate that the bit index is X86_PTE_RW. */
5366e994777f9d9391cf809dc77610f57270d75dvboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,Fork));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return true;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return false;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Determin whether the page is likely to have been reused.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @returns true if we consider the page as being reused for a different purpose.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @returns false if we consider it to still be a paging page.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pPage The page in question.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pCpu The disassembly info for the faulting insturction.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pvFault The fault address.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @remark The REP prefix check is left to the caller because of STOSD/W.
5366e994777f9d9391cf809dc77610f57270d75dvboxsyncDECLINLINE(bool) pgmPoolMonitorIsReused(PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu, RTGCPTR pvFault)
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return true;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return true;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return true;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return true;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return true;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync case OP_MOVNTDQ: /* solaris - hwblkclr & hwblkpagecopy */
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return true;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return true;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync //if (pPage->fCR3Mix)
5366e994777f9d9391cf809dc77610f57270d75dvboxsync // return false;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync return false;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Flushes the page being accessed.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @returns VBox status code suitable for scheduling.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pVM The VM handle.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pPool The pool.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pPage The pool page (head).
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pCpu The disassembly of the write instruction.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pRegFrame The trap register frame.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param GCPhysFault The fault address as guest physical address.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pvFault The fault address.
5366e994777f9d9391cf809dc77610f57270d75dvboxsyncstatic int pgmPoolAccessHandlerFlush(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
5366e994777f9d9391cf809dc77610f57270d75dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * First, do the flushing.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Emulate the instruction (xp/w2k problem, requires pc/cr2/sp detection).
5366e994777f9d9391cf809dc77610f57270d75dvboxsync int rc2 = EMInterpretInstructionCPU(pVM, pCpu, pRegFrame, pvFault, &cbWritten);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync if (PATMIsPatchGCAddr(pVM, (RTGCPTR)pRegFrame->eip))
5366e994777f9d9391cf809dc77610f57270d75dvboxsync LogFlow(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv, ignoring.\n",
5366e994777f9d9391cf809dc77610f57270d75dvboxsync STAM_COUNTER_INC(&pPool->StatMonitorGCIntrFailPatch2);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,EmulateInstr));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync /* See use in pgmPoolAccessHandlerSimple(). */
5366e994777f9d9391cf809dc77610f57270d75dvboxsync LogFlow(("pgmPoolAccessHandlerPT: returns %Vrc (flushed)\n", rc));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Handles the STOSD write accesses.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @returns VBox status code suitable for scheduling.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pVM The VM handle.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pPool The pool.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pPage The pool page (head).
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pCpu The disassembly of the write instruction.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pRegFrame The trap register frame.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param GCPhysFault The fault address as guest physical address.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pvFault The fault address.
5366e994777f9d9391cf809dc77610f57270d75dvboxsyncDECLINLINE(int) pgmPoolAccessHandlerSTOSD(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
5366e994777f9d9391cf809dc77610f57270d75dvboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Increment the modification counter and insert it into the list
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * of modified pages the first time.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Execute REP STOSD.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * This ASSUMES that we're not invoked by Trap0e on in a out-of-sync
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * write situation, meaning that it's safe to write here.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync pgmPoolMonitorChainChanging(pPool, pPage, GCPhysFault, pu32, NULL);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync PGMPhysWriteGCPhys(pVM, GCPhysFault, &pRegFrame->eax, 4);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync /* See use in pgmPoolAccessHandlerSimple(). */
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Handles the simple write accesses.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @returns VBox status code suitable for scheduling.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pVM The VM handle.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pPool The pool.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pPage The pool page (head).
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pCpu The disassembly of the write instruction.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pRegFrame The trap register frame.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param GCPhysFault The fault address as guest physical address.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pvFault The fault address.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsyncDECLINLINE(int) pgmPoolAccessHandlerSimple(PVM pVM, PPGMPOOL pPool, PPGMPOOLPAGE pPage, PDISCPUSTATE pCpu,
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync PCPUMCTXCORE pRegFrame, RTGCPHYS GCPhysFault, RTGCPTR pvFault)
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Increment the modification counter and insert it into the list
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * of modified pages the first time.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Clear all the pages. ASSUMES that pvFault is readable.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync pgmPoolMonitorChainChanging(pPool, pPage, GCPhysFault, pvFault, pCpu);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Interpret the instruction.
c142e0f462e6c921a73d84ee50f41396b3a99db5vboxsync int rc = EMInterpretInstructionCPU(pVM, pCpu, pRegFrame, pvFault, &cb);
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync if (PATMIsPatchGCAddr(pVM, (RTGCPTR)(RTGCUINTPTR)pCpu->opaddr))
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync /* We're not able to handle this in ring-3, so fix the interpreter! */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync /** @note Should be fine. There's no need to flush the whole thing. */
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync AssertMsgFailed(("pgmPoolAccessHandlerPTWorker: Interpretation failed for patch code %04x:%RGv - opcode=%d\n",
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync pRegFrame->cs, (RTGCPTR)pRegFrame->eip, pCpu->pCurInstr->opcode));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync STAM_COUNTER_INC(&pPool->StatMonitorGCIntrFailPatch1);
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,EmulateInstr));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Quick hack, with logging enabled we're getting stale
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * code TLBs but no data TLB for EIP and crash in EMInterpretDisasOne.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Flushing here is BAD and expensive, I think EMInterpretDisasOne will
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * have to be fixed to support this. But that'll have to wait till next week.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * An alternative is to keep track of the changed PTEs together with the
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * GCPhys from the guest PT. This may proove expensive though.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * At the moment, it's VITAL that it's done AFTER the instruction interpreting
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * because we need the stale TLBs in some cases (XP boot). This MUST be fixed properly!
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync LogFlow(("pgmPoolAccessHandlerSimple: returns %Vrc cb=%d\n", rc, cb));
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsync * \#PF Handler callback for PT write accesses.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @returns VBox status code (appropriate for GC return).
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsync * @param pVM VM Handle.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @param uErrorCode CPU Error code.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @param pRegFrame Trap register frame.
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsync * NULL on DMA and other non CPU access.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @param pvFault The fault address (cr2).
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsync * @param GCPhysFault The GC physical address corresponding to pvFault.
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync * @param pvUser User argument.
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsyncDECLEXPORT(int) pgmPoolAccessHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPHYS GCPhysFault, void *pvUser)
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync STAM_PROFILE_START(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), a);
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsync LogFlow(("pgmPoolAccessHandler: pvFault=%p pPage=%p:{.idx=%d} GCPhysFault=%VGp\n", pvFault, pPage, pPage->idx, GCPhysFault));
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync * We should ALWAYS have the list head as user parameter. This
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsync * is because we use that page to record the changes.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * Disassemble the faulting instruction.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync int rc = EMInterpretDisasOne(pVM, pRegFrame, &Cpu, NULL);
06ea6bcf23874b662d499b3f130024c98b2dd7a6vboxsync * Check if it's worth dealing with.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync bool fReused = false;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync if ( ( pPage->cModifications < 48 /** @todo #define */ /** @todo need to check that it's not mapping EIP. */ /** @todo adjust this! */
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync && !(fReused = pgmPoolMonitorIsReused(pPage, &Cpu, pvFault))
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync && !pgmPoolMonitorIsForking(pPool, &Cpu, GCPhysFault & PAGE_OFFSET_MASK))
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Simple instructions, no REP prefix.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync rc = pgmPoolAccessHandlerSimple(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,Handled), a);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Windows is frequently doing small memset() operations (netio test 4k+).
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * We have to deal with these or we'll kill the cache and performance.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync && pRegFrame->ecx * 4 <= PAGE_SIZE - ((uintptr_t)pvFault & PAGE_OFFSET_MASK)
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync && (pRegFrame->eax == 0 || pRegFrame->eax == 0x80) /* the two values observed. */
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync rc = pgmPoolAccessHandlerSTOSD(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,RepStosd), a);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync /* REP prefix, don't bother. */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync STAM_COUNTER_INC(&pPool->CTXMID(StatMonitor,RepPrefix));
06ea6bcf23874b662d499b3f130024c98b2dd7a6vboxsync Log4(("pgmPoolAccessHandler: eax=%#x ecx=%#x edi=%#x esi=%#x eip=%#x opcode=%d prefix=%#x\n",
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync pRegFrame->eax, pRegFrame->ecx, pRegFrame->edi, pRegFrame->esi, pRegFrame->eip, Cpu.pCurInstr->opcode, Cpu.prefix));
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * Not worth it, so flush it.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * If we considered it to be reused, don't to back to ring-3
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * to emulate failed instructions since we usually cannot
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * interpret then. This may be a bit risky, in which case
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * the reuse detection must be fixed.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync rc = pgmPoolAccessHandlerFlush(pVM, pPool, pPage, &Cpu, pRegFrame, GCPhysFault, pvFault);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync STAM_PROFILE_STOP_EX(&pVM->pgm.s.CTXSUFF(pPool)->CTXSUFF(StatMonitor), &pPool->CTXMID(StatMonitor,FlushPage), a);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync# endif /* !IN_RING3 */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync#endif /* PGMPOOL_WITH_MONITORING */
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * Inserts a page into the GCPhys hash table.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPool The pool.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPage The page.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncDECLINLINE(void) pgmPoolHashInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync Log3(("pgmPoolHashInsert: %VGp\n", pPage->GCPhys));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync Assert(pPage->GCPhys != NIL_RTGCPHYS); Assert(pPage->iNext == NIL_PGMPOOL_IDX);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Removes a page from the GCPhys hash table.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPool The pool.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPage The page.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsyncDECLINLINE(void) pgmPoolHashRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync Log3(("pgmPoolHashRemove: %VGp\n", pPage->GCPhys));
7e8ef90d3160234df0f254131b87af4243d79476vboxsync AssertReleaseMsgFailed(("GCPhys=%VGp idx=%#x\n", pPage->GCPhys, pPage->idx));
7e8ef90d3160234df0f254131b87af4243d79476vboxsync * Frees up one cache page.
7e8ef90d3160234df0f254131b87af4243d79476vboxsync * @returns VBox status code.
7e8ef90d3160234df0f254131b87af4243d79476vboxsync * @retval VINF_SUCCESS on success.
7e8ef90d3160234df0f254131b87af4243d79476vboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of a physical handler will cause a light weight pool flush.
06ea6bcf23874b662d499b3f130024c98b2dd7a6vboxsync * @param pPool The pool.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param iUser The user index.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncstatic int pgmPoolCacheFreeOne(PPGMPOOL pPool, uint16_t iUser)
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync Assert(pPool->iAgeHead != pPool->iAgeTail); /* We shouldn't be here if there < 2 cached entries! */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Select one page from the tail of the age list.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync/* This is the alternative to the SyncCR3 pgmPoolCacheUsed calls.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync if (pPool->aPages[iToFree].iUserHead != NIL_PGMPOOL_USER_INDEX)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync uint16_t i = pPool->aPages[iToFree].iAgePrev;
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync for (unsigned j = 0; j < 10 && i != NIL_PGMPOOL_USER_INDEX; j++, i = pPool->aPages[i].iAgePrev)
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync if (pPool->aPages[iToFree].iUserHead == NIL_PGMPOOL_USER_INDEX)
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync iToFree = i;
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsync int rc = pgmPoolFlushPage(pPool, &pPool->aPages[iToFree]);
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsync * Checks if a kind mismatch is really a page being reused
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsync * or if it's just normal remappings.
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsync * @returns true if reused and the cached page (enmKind1) should be flushed
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsync * @returns false if not reused.
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsync * @param enmKind1 The kind of the cached page.
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsync * @param enmKind2 The kind of the requested page.
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsyncstatic bool pgmPoolCacheReusedByKind(PGMPOOLKIND enmKind1, PGMPOOLKIND enmKind2)
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsync * Never reuse them. There is no remapping in non-paging mode.
1cd59fdf671ca60c64d77e3f7046aaecf7003824vboxsync return true;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync return true;
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync return false;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * It's perfectly fine to reuse these, except for PAE and non-paging stuff.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync return true;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync return false;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * These cannot be flushed, and it's common to reuse the PDs as PTs.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync return false;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Attempts to satisfy a pgmPoolAlloc request from the cache.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @returns VBox status code.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @retval VINF_PGM_CACHED_PAGE on success.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @retval VERR_FILE_NOT_FOUND if not found.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPool The pool.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param enmKind The kind of mapping.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param iUser The shadow page pool index of the user table.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @param iUserTable The index into the user table (shadowed).
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @param ppPage Where to store the pointer to the page.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsyncstatic int pgmPoolCacheAlloc(PPGMPOOL pPool, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, uint16_t iUser, uint16_t iUserTable, PPPGMPOOLPAGE ppPage)
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * Look up the GCPhys in the hash.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync Log3(("pgmPoolCacheAlloc: %VGp kind %d iUser=%d iUserTable=%x SLOT=%d\n", GCPhys, enmKind, iUser, iUserTable, i));
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync Log3(("pgmPoolCacheAlloc: slot %d found page %VGp\n", i, pPage->GCPhys));
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync int rc = pgmPoolTrackAddUser(pPool, pPage, iUser, iUserTable);
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * The kind is different. In some cases we should now flush the page
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * as it has been reused, but in most cases this is normal remapping
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * of PDs as PT or big pages using the GCPhys field in a slightly
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * different way than the other kinds.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync if (pgmPoolCacheReusedByKind((PGMPOOLKIND)pPage->enmKind, enmKind))
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync pgmPoolFlushPage(pPool, pPage); /* ASSUMES that VERR_PGM_POOL_CLEARED will be returned by pgmPoolTracInsert. */
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync } while (i != NIL_PGMPOOL_IDX);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync Log3(("pgmPoolCacheAlloc: Missed GCPhys=%RGp enmKind=%d\n", GCPhys, enmKind));
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * Inserts a page into the cache.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * @param pPool The pool.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * @param pPage The cached page.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * @param fCanBeCached Set if the page is fit for caching from the caller's point of view.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsyncstatic void pgmPoolCacheInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCanBeCached)
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * Insert into the GCPhys hash if the page is fit for that.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync Log3(("pgmPoolCacheInsert: Caching %p:{.Core=%RHp, .idx=%d, .enmKind=%d, GCPhys=%RGp}\n",
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync Log3(("pgmPoolCacheInsert: Not caching %p:{.Core=%RHp, .idx=%d, .enmKind=%d, GCPhys=%RGp}\n",
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync pPage, pPage->Core.Key, pPage->idx, pPage->enmKind, pPage->GCPhys));
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * Insert at the head of the age list.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync pPool->aPages[pPool->iAgeHead].iAgePrev = pPage->idx;
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * Flushes a cached page.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * @param pPool The pool.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * @param pPage The cached page.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsyncstatic void pgmPoolCacheFlushPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync Log3(("pgmPoolCacheFlushPage: %VGp\n", pPage->GCPhys));
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * Remove the page from the hash.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * Remove it from the age list.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync pPool->aPages[pPage->iAgeNext].iAgePrev = pPage->iAgePrev;
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync pPool->aPages[pPage->iAgePrev].iAgeNext = pPage->iAgeNext;
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync#endif /* PGMPOOL_WITH_CACHE */
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * Looks for pages sharing the monitor.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @returns Pointer to the head page.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @returns NULL if not found.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @param pPool The Pool
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync * @param pNewPage The page which is going to be monitored.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsyncstatic PPGMPOOLPAGE pgmPoolMonitorGetPageByGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pNewPage)
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * Look up the GCPhys in the hash.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync RTGCPHYS GCPhys = pNewPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync /* find the head */
5366e994777f9d9391cf809dc77610f57270d75dvboxsync /* ignore, no monitoring. */
5366e994777f9d9391cf809dc77610f57270d75dvboxsync AssertFatalMsgFailed(("enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync } while (i != NIL_PGMPOOL_IDX);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Enabled write monitoring of a guest page.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * @returns VBox status code.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * @retval VINF_SUCCESS on success.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * @retval VERR_PGM_POOL_CLEARED if the registration of the physical handler will cause a light weight pool flush.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * @param pPool The pool.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * @param pPage The cached page.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsyncstatic int pgmPoolMonitorInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync LogFlow(("pgmPoolMonitorInsert %VGp\n", pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1)));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Filter out the relevant kinds.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync /* Nothing to monitor here. */
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * Install handler.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync PPGMPOOLPAGE pPageHead = pgmPoolMonitorGetPageByGCPhys(pPool, pPage);
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync Assert(pPageHead != pPage); Assert(pPageHead->iMonitoredNext != pPage->idx);
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync pPool->aPages[pPageHead->iMonitoredNext].iMonitoredPrev = pPage->idx;
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync Assert(pPage->iMonitoredNext == NIL_PGMPOOL_IDX); Assert(pPage->iMonitoredPrev == NIL_PGMPOOL_IDX);
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync const RTGCPHYS GCPhysPage = pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1);
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync rc = PGMHandlerPhysicalRegisterEx(pVM, PGMPHYSHANDLERTYPE_PHYSICAL_WRITE,
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pPage),
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pPage),
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(pVM, pPage),
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync /** @todo we should probably deal with out-of-memory conditions here, but for now increasing
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync * the heap size should suffice. */
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync if (pVM->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
40c1a23e86c79b24a917a43c186b2e54504d12c1vboxsync * Disables write monitoring of a guest page.
40c1a23e86c79b24a917a43c186b2e54504d12c1vboxsync * @returns VBox status code.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @retval VINF_SUCCESS on success.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @param pPool The pool.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @param pPage The cached page.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsyncstatic int pgmPoolMonitorFlush(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * Filter out the relevant kinds.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync /* Nothing to monitor here. */
5366e994777f9d9391cf809dc77610f57270d75dvboxsync AssertFatalMsgFailed(("This can't happen! enmKind=%d\n", pPage->enmKind));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Remove the page from the monitored list or uninstall it if last.
7e8ef90d3160234df0f254131b87af4243d79476vboxsync PPGMPOOLPAGE pNewHead = &pPool->aPages[pPage->iMonitoredNext];
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync rc = PGMHandlerPhysicalChangeCallbacks(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1),
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync pPool->pfnAccessHandlerR3, MMHyperCCToR3(pVM, pNewHead),
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync pPool->pfnAccessHandlerR0, MMHyperCCToR0(pVM, pNewHead),
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync pPool->pfnAccessHandlerGC, MMHyperCCToGC(pVM, pNewHead),
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync pPool->aPages[pPage->iMonitoredPrev].iMonitoredNext = pPage->iMonitoredNext;
cc1ef2ef9bbc6a0ff964928d61b7298e5bfcce5fvboxsync pPool->aPages[pPage->iMonitoredNext].iMonitoredPrev = pPage->iMonitoredPrev;
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync rc = PGMHandlerPhysicalDeregister(pVM, pPage->GCPhys & ~(RTGCPHYS)(PAGE_SIZE - 1));
02f7c106d33c45f99ec412a5fe0adde868f700fcvboxsync if (pVM->pgm.s.fSyncFlags & PGM_SYNC_CLEAR_PGM_POOL)
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync * Remove it from the list of modified pages (if in it).
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync * Set or clear the fCR3Mix attribute in a chain of monitored pages.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * @param pPool The Pool.
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync * @param pPage A page in the chain.
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync * @param fCR3Mix The new fCR3Mix value.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsyncstatic void pgmPoolMonitorChainChangeCR3Mix(PPGMPOOL pPool, PPGMPOOLPAGE pPage, bool fCR3Mix)
02f7c106d33c45f99ec412a5fe0adde868f700fcvboxsync /* current */
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync /* before */
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync /* after */
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * Installs or modifies monitoring of a CR3 page (special).
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * We're pretending the CR3 page is shadowed by the pool so we can use the
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * generic mechanisms in detecting chained monitoring. (This also gives us a
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * tast of what code changes are required to really pool CR3 shadow pages.)
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * @returns VBox status code.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * @param pPool The pool.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * @param idxRoot The CR3 (root) page index.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * @param GCPhysCR3 The (new) CR3 value.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsyncint pgmPoolMonitorMonitorCR3(PPGMPOOL pPool, uint16_t idxRoot, RTGCPHYS GCPhysCR3)
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync Assert(idxRoot != NIL_PGMPOOL_IDX && idxRoot < PGMPOOL_IDX_FIRST);
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync LogFlow(("pgmPoolMonitorMonitorCR3: idxRoot=%d pPage=%p:{.GCPhys=%VGp, .fMonitored=%d} GCPhysCR3=%VGp\n",
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync idxRoot, pPage, pPage->GCPhys, pPage->fMonitored, GCPhysCR3));
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * The unlikely case where it already matches.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * Flush the current monitoring and remove it from the hash.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, false);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Monitor the page at the new location and insert it into the hash.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, true);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Removes the monitoring of a CR3 page (special).
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @returns VBox status code.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pPool The pool.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param idxRoot The CR3 (root) page index.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsyncint pgmPoolMonitorUnmonitorCR3(PPGMPOOL pPool, uint16_t idxRoot)
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync Assert(idxRoot != NIL_PGMPOOL_IDX && idxRoot < PGMPOOL_IDX_FIRST);
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsync LogFlow(("pgmPoolMonitorUnmonitorCR3: idxRoot=%d pPage=%p:{.GCPhys=%VGp, .fMonitored=%d}\n",
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsync idxRoot, pPage, pPage->GCPhys, pPage->fMonitored));
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsync pgmPoolMonitorChainChangeCR3Mix(pPool, pPage, false);
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsync#endif /* PGMPOOL_WITH_MIXED_PT_CR3 */
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Inserts the page into the list of modified pages.
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsync * @param pPool The pool.
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsync * @param pPage The page.
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsyncvoid pgmPoolMonitorModifiedInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsync Log3(("pgmPoolMonitorModifiedInsert: idx=%d\n", pPage->idx));
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsync ("Next=%d Prev=%d idx=%d cModifications=%d Head=%d cModifiedPages=%d\n",
f9ce005e61f0fbb51a2cabc53d58c3485151faa9vboxsync pPage->iModifiedNext, pPage->iModifiedPrev, pPage->idx, pPage->cModifications,
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync pPool->aPages[pPool->iModifiedHead].iModifiedPrev = pPage->idx;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync if (pPool->cModifiedPages > pPool->cModifiedPagesHigh)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Removes the page from the list of modified pages and resets the
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * moficiation counter.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pPool The pool.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPage The page which is believed to be in the list of modified pages.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncstatic void pgmPoolMonitorModifiedRemove(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync Log3(("pgmPoolMonitorModifiedRemove: idx=%d cModifications=%d\n", pPage->idx, pPage->cModifications));
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = NIL_PGMPOOL_IDX;
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync pPool->aPages[pPage->iModifiedPrev].iModifiedNext = pPage->iModifiedNext;
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync pPool->aPages[pPage->iModifiedNext].iModifiedPrev = pPage->iModifiedPrev;
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Zaps the list of modified pages, resetting their modification counters in the process.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * @param pVM The VM handle.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync LogFlow(("pgmPoolMonitorModifiedClearAll: cModifiedPages=%d\n", pPool->cModifiedPages));
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync AssertMsg(cPages == pPool->cModifiedPages, ("%d != %d\n", cPages, pPool->cModifiedPages));
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Clear all shadow pages and clear all modification counters.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pVM The VM handle.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @remark Should only be used when monitoring is available, thus placed in
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * the PGMPOOL_WITH_MONITORING #ifdef.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync LogFlow(("pgmPoolClearAll: cUsedPages=%d\n", pPool->cUsedPages));
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * Iterate all the pages until we've encountered all that in use.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * This is simple but not quite optimal solution.
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync unsigned cModifiedPages = 0; NOREF(cModifiedPages);
0fd108a555ae02f2fb557d5f2c40281999b60d15vboxsync * We only care about shadow page tables.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync void *pvShw = PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pPage);
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync /* fall thru */
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync Assert(!pPage->cModifications || ++cModifiedPages);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX || pPage->cModifications);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX || pPage->cModifications);
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync /* swipe the special pages too. */
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync for (iPage = PGMPOOL_IDX_FIRST_SPECIAL; iPage < PGMPOOL_IDX_FIRST; iPage++)
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync Assert(!pPage->cModifications || ++cModifiedPages);
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync Assert(pPage->iModifiedNext == NIL_PGMPOOL_IDX || pPage->cModifications);
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync Assert(pPage->iModifiedPrev == NIL_PGMPOOL_IDX || pPage->cModifications);
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync AssertMsg(cModifiedPages == pPool->cModifiedPages, ("%d != %d\n", cModifiedPages, pPool->cModifiedPages));
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync * Clear all the GCPhys links and rebuild the phys ext free list.
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync for (PPGMRAMRANGE pRam = pPool->CTXSUFF(pVM)->pgm.s.CTXALLSUFF(pRamRanges);
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync while (iPage-- > 0)
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync pRam->aPages[iPage].HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
35e6d303696e46d969aaf9a59cc381333a483b0bvboxsync PPGMPOOLPHYSEXT paPhysExts = pPool->CTXSUFF(paPhysExts);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync for (unsigned i = 0; i < cMaxPhysExts; i++)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync paPhysExts[cMaxPhysExts - 1].iNext = NIL_PGMPOOL_PHYSEXT_INDEX;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync#endif /* PGMPOOL_WITH_MONITORING */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Frees up at least one user entry.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @returns VBox status code.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @retval VINF_SUCCESS if successfully added.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsync * @param pPool The pool.
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsync * @param iUser The user index.
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsyncstatic int pgmPoolTrackFreeOneUser(PPGMPOOL pPool, uint16_t iUser)
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsync * Just free cached pages in a braindead fashion.
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsync /** @todo walk the age list backwards and free the first with usage. */
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsync } while (pPool->iUserFreeHead == NIL_PGMPOOL_USER_INDEX);
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsync * Lazy approach.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Inserts a page into the cache.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * This will create user node for the page, insert it into the GCPhys
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * hash, and insert it into the age list.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @returns VBox status code.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @retval VINF_SUCCESS if successfully added.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPool The pool.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPage The cached page.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param GCPhys The GC physical address of the page we're gonna shadow.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param iUser The user index.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param iUserTable The user table index.
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsyncDECLINLINE(int) pgmPoolTrackInsert(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTGCPHYS GCPhys, uint16_t iUser, uint16_t iUserTable)
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync LogFlow(("pgmPoolTrackInsert iUser %d iUserTable %d\n", iUser, iUserTable));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Find free a user node.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * Unlink the user node from the free list,
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * initialize and insert it into the user list.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Insert into cache and enable monitoring of the guest page if enabled.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Until we implement caching of all levels, including the CR3 one, we'll
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * have to make sure we don't try monitor & cache any recursive reuse of
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * a monitored CR3 page. Because all windows versions are doing this we'll
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * have to be able to do combined access monitoring, CR3 + PT and
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * PD + PT (guest PAE).
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * We're now cooperating with the CR3 monitor if an uncachable page is found.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync#if defined(PGMPOOL_WITH_MONITORING) || defined(PGMPOOL_WITH_CACHE)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync const bool fCanBeMonitored = true;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync bool fCanBeMonitored = pPool->CTXSUFF(pVM)->pgm.s.GCPhysGstCR3Monitored == NIL_RTGCPHYS
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync || (GCPhys & X86_PTE_PAE_PG_MASK) != (pPool->CTXSUFF(pVM)->pgm.s.GCPhysGstCR3Monitored & X86_PTE_PAE_PG_MASK)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync pgmPoolCacheInsert(pPool, pPage, fCanBeMonitored); /* This can be expanded. */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync /* 'Failed' - free the usage, and keep it in the cache (if enabled). */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync#endif /* PGMPOOL_WITH_MONITORING */
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync# ifdef PGMPOOL_WITH_CACHE /* (only used when the cache is enabled.) */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Adds a user reference to a page.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * This will
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync * This will move the page to the head of the
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync * @returns VBox status code.
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync * @retval VINF_SUCCESS if successfully added.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @retval VERR_PGM_POOL_FLUSHED if the pool was flushed.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @param pPool The pool.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @param pPage The cached page.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @param iUser The user index.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @param iUserTable The user table.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsyncstatic int pgmPoolTrackAddUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint16_t iUserTable)
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync LogFlow(("pgmPoolTrackAddUser iUser %d iUserTable %d\n", iUser, iUserTable));
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * Check that the entry doesn't already exists.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync AssertMsg(paUsers[i].iUser != iUser || paUsers[i].iUserTable != iUserTable, ("%x %x vs new %x %x\n", paUsers[i].iUser, paUsers[i].iUserTable, iUser, iUserTable));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Allocate a user node.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Initialize the user node and insert it.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Tell the cache to update its replacement stats for this page.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync# endif /* PGMPOOL_WITH_CACHE */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Frees a user record associated with a page.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * This does not clear the entry in the user table, it simply replaces the
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync * user record to the chain of free records.
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync * @param pPool The pool.
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync * @param HCPhys The HC physical address of the shadow page.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync * @param iUser The shadow page pool index of the user table.
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync * @param iUserTable The index into the user table (shadowed).
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncstatic void pgmPoolTrackFreeUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, uint16_t iUser, uint16_t iUserTable)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Unlink and free the specified user entry.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync /* Special: For PAE and 32-bit paging, there are usually no more than one user. */
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync /* General: Linear search. */
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsync /* Fatal: didn't find it */
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsync AssertFatalMsgFailed(("Didn't find the user entry! iUser=%#x iUserTable=%#x GCPhys=%VGp\n",
58c0567dee3cc3ebe62dec1e27f8e35bac4ddeb0vboxsync * Gets the entry size of a shadow table.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param enmKind The kind of page.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @returns The size of the entry in bytes. That is, 4 or 8.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * returned.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsyncDECLINLINE(unsigned) pgmPoolTrackGetShadowEntrySize(PGMPOOLKIND enmKind)
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * Gets the entry size of a guest table.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * @param enmKind The kind of page.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * @returns The size of the entry in bytes. That is, 0, 4 or 8.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * @returns If the kind is not for a table, an assertion is raised and 0 is
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * returned.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsyncDECLINLINE(unsigned) pgmPoolTrackGetGuestEntrySize(PGMPOOLKIND enmKind)
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync /** @todo can we return 0? (nobody is calling this...) */
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * Scans one shadow page table for mappings of a physical page.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * @param pVM The VM handle.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * @param pPhysPage The guest page in question.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * @param iShw The shadow page table.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync * @param cRefs The number of references made in that PT.
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsyncstatic void pgmPoolTrackFlushGCPhysPTInt(PVM pVM, PCPGMPAGE pPhysPage, uint16_t iShw, uint16_t cRefs)
9e17ca2e9d797e845e3284141dd4086a4b817ae5vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPT: HCPhys=%RHp iShw=%d cRefs=%d\n", pPhysPage->HCPhys, iShw, cRefs));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Assert sanity.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync AssertFatalMsg(iShw < pPool->cCurPages && iShw != NIL_PGMPOOL_IDX, ("iShw=%d\n", iShw));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync * Then, clear the actual mappings to the page in the shadow PT.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync const uint32_t u32 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
5366e994777f9d9391cf809dc77610f57270d75dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
5366e994777f9d9391cf809dc77610f57270d75dvboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX32 cRefs=%#x\n", i, pPT->a[i], cRefs));
5366e994777f9d9391cf809dc77610f57270d75dvboxsync pPT->a[i].u = 0;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync#if defined(DEBUG) && !defined(IN_RING0) ///@todo RTLogPrintf is missing in R0.
5366e994777f9d9391cf809dc77610f57270d75dvboxsync RTLogPrintf("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent);
5366e994777f9d9391cf809dc77610f57270d75dvboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
5366e994777f9d9391cf809dc77610f57270d75dvboxsync pPT->a[i].u = 0;
5366e994777f9d9391cf809dc77610f57270d75dvboxsync AssertFatalMsgFailed(("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync PX86PTPAE pPT = (PX86PTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync Log4(("pgmPoolTrackFlushGCPhysPTs: i=%d pte=%RX64 cRefs=%#x\n", i, pPT->a[i], cRefs));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync pPT->a[i].u = 0;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync#if defined(DEBUG) && !defined(IN_RING0) ///@todo RTLogPrintf is missing in R0.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync RTLogPrintf("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsync pPT->a[i].u = 0;
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync AssertFatalMsgFailed(("cRefs=%d iFirstPresent=%d cPresent=%d\n", cRefs, pPage->iFirstPresent, pPage->cPresent));
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync AssertFatalMsgFailed(("enmKind=%d iShw=%d\n", pPage->enmKind, iShw));
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * Scans one shadow page table for mappings of a physical page.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * @param pVM The VM handle.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * @param pPhysPage The guest page in question.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * @param iShw The shadow page table.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * @param cRefs The number of references made in that PT.
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsyncvoid pgmPoolTrackFlushGCPhysPT(PVM pVM, PPGMPAGE pPhysPage, uint16_t iShw, uint16_t cRefs)
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync PPGMPOOL pPool = pVM->pgm.s.CTXSUFF(pPool); NOREF(pPool);
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPT: HCPhys=%RHp iShw=%d cRefs=%d\n", pPhysPage->HCPhys, iShw, cRefs));
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPT, f);
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, iShw, cRefs);
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPT, f);
e378dfdadd62aadc0a012c9953322d979d7606e6vboxsync * Flushes a list of shadow page tables mapping the same physical page.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pVM The VM handle.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPhysPage The guest page in question.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param iPhysExt The physical cross reference extent list to flush.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsyncvoid pgmPoolTrackFlushGCPhysPTs(PVM pVM, PPGMPAGE pPhysPage, uint16_t iPhysExt)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTs, f);
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTs: HCPhys=%RHp iPhysExt\n", pPhysPage->HCPhys, iPhysExt));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync for (unsigned i = 0; i < ELEMENTS(pPhysExt->aidx); i++)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync pgmPoolTrackFlushGCPhysPTInt(pVM, pPhysPage, pPhysExt->aidx[i], 1);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync /* insert the list into the free list and clear the ram range entry. */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTs, f);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync#endif /* PGMPOOL_WITH_GCPHYS_TRACKING */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Scans all shadow page tables for mappings of a physical page.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * This may be slow, but it's most likely more efficient than cleaning
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * out the entire page pool / cache.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @returns VBox status code.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @retval VINF_SUCCESS if all references has been successfully cleared.
9523921c89c66f4bececdbd5ac95aed0039eda1bvboxsync * @retval VINF_PGM_GCPHYS_ALIASED if we're better off with a CR3 sync and
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync * a page pool cleaning.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pVM The VM handle.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pPhysPage The guest page in question.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsyncint pgmPoolTrackFlushGCPhysPTsSlow(PVM pVM, PPGMPAGE pPhysPage)
45655563f818c5d5bbf4b3d14aa48cbd92a871f1vboxsync STAM_PROFILE_START(&pPool->StatTrackFlushGCPhysPTsSlow, s);
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: cUsedPages=%d cPresent=%d HCPhys=%RHp\n",
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync pPool->cUsedPages, pPool->cPresent, pPhysPage->HCPhys));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * There is a limit to what makes sense.
d4a9d525e6f2111d462d2d96462dced6b9ec00efvboxsync LogFlow(("pgmPoolTrackFlushGCPhysPTsSlow: giving up... (cPresent=%d)\n", pPool->cPresent));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * Iterate all the pages until we've encountered all that in use.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync * This is simple but not quite optimal solution.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync const uint64_t u64 = PGM_PAGE_GET_HCPHYS(pPhysPage) | X86_PTE_P;
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync * We only care about shadow page tables.
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync PX86PT pPT = (PX86PT)PGMPOOL_PAGE_2_PTR(pVM, pPage);
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync if ((pPT->a[i].u & (X86_PTE_PG_MASK | X86_PTE_P)) == u32)
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX32\n", iPage, i, pPT->a[i]));
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync pPT->a[i].u = 0;
5f2b03bf7695dabd71222dba123532a3f76828c1vboxsync PX86PTPAE pPT = (PX86PTPAE)PGMPOOL_PAGE_2_PTR(pVM, pPage);
7862f4bd000f1eb6c86289f5ac2849e9cf943ca9vboxsync for (unsigned i = pPage->iFirstPresent; i < ELEMENTS(pPT->a); i++)
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync if ((pPT->a[i].u & (X86_PTE_PAE_PG_MASK | X86_PTE_P)) == u64)
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync //Log4(("pgmPoolTrackFlushGCPhysPTsSlow: idx=%d i=%d pte=%RX64\n", iPage, i, pPT->a[i]));
907b6adfa052386a0666d5557bee9bdbc100c2e5vboxsync pPT->a[i].u = 0;
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync pPhysPage->HCPhys &= MM_RAM_FLAGS_NO_REFS_MASK; /** @todo PAGE FLAGS */
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync STAM_PROFILE_STOP(&pPool->StatTrackFlushGCPhysPTsSlow, s);
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync * Clears the user entry in a user table.
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync * This is used to remove all references to a page when flushing it.
cc1ef2ef9bbc6a0ff964928d61b7298e5bfcce5fvboxsyncstatic void pgmPoolTrackClearPageUser(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PCPGMPOOLUSER pUser)
cc1ef2ef9bbc6a0ff964928d61b7298e5bfcce5fvboxsync * Map the user page.
ed9d3db07648c7e3a979105c15ad752ee9ea18devboxsync PPGMPOOLPAGE pUserPage = &pPool->aPages[pUser->iUser];
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync u.pau64 = (uint64_t *)PGMPOOL_PAGE_2_PTR(pPool->CTXSUFF(pVM), pUserPage);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Some sanity checks.
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync Assert(!(u.pau32[pUser->iUser] & PGM_PDFLAGS_MAPPING));
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync Assert(!(u.pau64[pUser->iUser] & PGM_PDFLAGS_MAPPING));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync Assert(pUser->iUserTable < 2048 && pUser->iUser == PGMPOOL_IDX_PAE_PD);
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync Assert(!(u.pau64[pUser->iUserTable] & PGM_PLXFLAGS_PERMANENT));
687794577e2e35c3cae67e692a7f2130d1262a82vboxsync AssertMsgFailed(("enmKind=%d\n", pUserPage->enmKind));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync#endif /* VBOX_STRICT */
06ea6bcf23874b662d499b3f130024c98b2dd7a6vboxsync * Clear the entry in the user page.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync /* 32-bit entries */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync /* 64-bit entries */
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsync AssertFatalMsgFailed(("enmKind=%d iUser=%#x iUserTable=%#x\n", pUserPage->enmKind, pUser->iUser, pUser->iUserTable));
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Clears all users of a page.
06ea6bcf23874b662d499b3f130024c98b2dd7a6vboxsyncstatic void pgmPoolTrackClearPageUsers(PPGMPOOL pPool, PPGMPOOLPAGE pPage)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Free all the user records.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync /* Clear enter in user table. */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync pgmPoolTrackClearPageUser(pPool, pPage, &paUsers[i]);
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync /* Free it. */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync /* Next. */
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * Allocates a new physical cross reference extent.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @returns Pointer to the allocated extent on success. NULL if we're out of them.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param pVM The VM handle.
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync * @param piPhysExt Where to store the phys ext index.
702a8ee2dc1de96f2f77e97135015d3e243186fdvboxsyncPPGMPOOLPHYSEXT pgmPoolTrackPhysExtAlloc(PVM pVM, uint16_t *piPhysExt)
2f3883b126a405f92b19e829472f614c7352b4f9vboxsync STAM_COUNTER_INC(&pPool->StamTrackPhysExtAllocFailures);
return pPhysExt;
return iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
return iPhysExtStart | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
if (!--cMax)
return MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
if (!pNew)
return MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
LogFlow(("pgmPoolTrackPhysExtAddref: added new extent %d:{%d}->%d\n", iPhysExt, iShwPT, iPhysExtStart));
return iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
if (pPhysExt)
LogFlow(("pgmPoolTrackPhysExtAddref: new extent: %d:{%d, %d}\n", iPhysExt, u16 & MM_RAM_FLAGS_IDX_MASK, iShwPT));
u16 = iPhysExt | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
u16 = MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT));
else if (u16 != (MM_RAM_FLAGS_IDX_OVERFLOWED | (MM_RAM_FLAGS_CREFS_PHYSEXT << (MM_RAM_FLAGS_CREFS_SHIFT - MM_RAM_FLAGS_IDX_SHIFT))))
return u16;
AssertFatalMsg(cRefs == MM_RAM_FLAGS_CREFS_PHYSEXT, ("cRefs=%d HCPhys=%RHp pPage=%p:{.idx=%d}\n", cRefs, pPhysPage->HCPhys, pPage, pPage->idx));
LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d lonely\n", pPhysPage->HCPhys, pPage->idx));
LogFlow(("pgmPoolTrackPhysExtDerefGCPhys: HCPhys=%RX64 idx=%d head\n", pPhysPage->HCPhys, pPage->idx));
AssertFatalMsgFailed(("not-found! cRefs=%d HCPhys=%RHp pPage=%p:{.idx=%d}\n", cRefs, pPhysPage->HCPhys, pPage, pPage->idx));
static void pgmPoolTracDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhys)
while (pRam)
static void pgmPoolTracDerefGCPhysHint(PPGMPOOL pPool, PPGMPOOLPAGE pPage, RTHCPHYS HCPhys, RTGCPHYS GCPhysHint)
while (pRam)
while (pRam)
while (iPage-- > 0)
DECLINLINE(void) pgmPoolTrackDerefPT32Bit32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PT pShwPT, PCX86PT pGstPT)
pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK);
DECLINLINE(void) pgmPoolTrackDerefPTPae32Bit(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT, PCX86PT pGstPT)
pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PG_MASK);
DECLINLINE(void) pgmPoolTrackDerefPTPaePae(PPGMPOOL pPool, PPGMPOOLPAGE pPage, PX86PTPAE pShwPT, PCX86PTPAE pGstPT)
pgmPoolTracDerefGCPhysHint(pPool, pPage, pShwPT->a[i].u & X86_PTE_PAE_PG_MASK, pGstPT->a[i].u & X86_PTE_PAE_PG_MASK);
PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPD->a[i].u & X86_PDE_PAE_PG_MASK);
if (pSubPage)
PPGMPOOLPAGE pSubPage = (PPGMPOOLPAGE)RTAvloHCPhysGet(&pPool->HCPhysTree, pShwPDPT->a[i].u & X86_PDPE_PG_MASK);
if (pSubPage)
#ifdef PGMPOOL_WITH_GCPHYS_TRACKING
void *pvGst;
void *pvGst;
void *pvGst;
case PGMPOOLKIND_ROOT_PAE_PD:
case PGMPOOLKIND_ROOT_PML4:
case PGMPOOLKIND_ROOT_PDPT:
#ifdef IN_RING3
#ifdef PGMPOOL_WITH_MONITORING
#ifdef PGMPOOL_WITH_USER_TRACKING
#ifdef PGMPOOL_WITH_CACHE
#ifdef PGMPOOL_WITH_USER_TRACKING
for (unsigned i = 0; i < cMaxUsers; i++)
#ifdef PGMPOOL_WITH_GCPHYS_TRACKING
pRam;
while (iPage-- > 0)
for (unsigned i = 0; i < cMaxPhysExts; i++)
#ifdef PGMPOOL_WITH_MONITORING
#ifdef PGMPOOL_WITH_CACHE
#ifdef PGMPOOL_WITH_MONITORING
# ifdef PGMPOOL_WITH_CACHE
#ifdef PGMPOOL_WITH_USER_TRACKING
#ifdef PGMPOOL_WITH_CACHE
* @retval VERR_PGM_POOL_CLEARED if the deregistration of the physical handler will cause a light weight pool flush.
Log(("pgmPoolFlushPage: specaial root page, rejected. enmKind=%d idx=%d\n", pPage->enmKind, pPage->idx));
return VINF_SUCCESS;
#ifdef PGMPOOL_WITH_USER_TRACKING
#ifdef PGMPOOL_WITH_CACHE
#ifdef PGMPOOL_WITH_MONITORING
return rc;
#ifdef PGMPOOL_WITH_USER_TRACKING
#ifdef PGMPOOL_WITH_CACHE
#ifdef IN_RING3
return rc;
return VINF_SUCCESS;
#ifdef PGMPOOL_WITH_CACHE
return VERR_PGM_POOL_FLUSHED;
int pgmPoolAlloc(PVM pVM, RTGCPHYS GCPhys, PGMPOOLKIND enmKind, uint16_t iUser, uint16_t iUserTable, PPPGMPOOLPAGE ppPage)
LogFlow(("pgmPoolAlloc: GCPhys=%VGp enmKind=%d iUser=%#x iUserTable=%#x\n", GCPhys, enmKind, iUser, iUserTable));
#ifdef PGMPOOL_WITH_CACHE
LogFlow(("pgmPoolAlloc: returns %Vrc *ppPage=%p:{.Key=%VHp, .idx=%d}\n", rc2, *ppPage, (*ppPage)->Core.Key, (*ppPage)->idx));
return rc2;
return rc;
pPool->cUsedPages++; /* physical handler registration / pgmPoolTrackFlushGCPhysPTsSlow requirement. */
#ifdef PGMPOOL_WITH_MONITORING
#ifdef PGMPOOL_WITH_USER_TRACKING
return rc3;
#ifdef VBOX_WITH_STATISTICS
LogFlow(("pgmPoolAlloc: returns %Vrc *ppPage=%p:{.Key=%VHp, .idx=%d, .fCached=%RTbool, .fMonitored=%RTbool}\n",
return rc;
return pPage;