/* $Id: PGMInline.h 32036 2010-08-27 10:14:39Z vboxsync $ */ /** @file * PGM - Inlined functions. */ /* * Copyright (C) 2006-2010 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ #ifndef ___PGMInline_h #define ___PGMInline_h #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /** @addtogroup grp_pgm_int Internals * @internal * @{ */ /** @todo Split out all the inline stuff into a separate file. Then we can * include it later when VM and VMCPU are defined and so avoid all that * &pVM->pgm.s and &pVCpu->pgm.s stuff. It also chops ~1600 lines off * this file and will make it somewhat easier to navigate... */ /** * Gets the PGMRAMRANGE structure for a guest page. * * @returns Pointer to the RAM range on success. * @returns NULL on a VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS condition. * * @param pPGM PGM handle. * @param GCPhys The GC physical address. */ DECLINLINE(PPGMRAMRANGE) pgmPhysGetRange(PPGM pPGM, RTGCPHYS GCPhys) { /* * Optimize for the first range. */ PPGMRAMRANGE pRam = pPGM->CTX_SUFF(pRamRanges); RTGCPHYS off = GCPhys - pRam->GCPhys; if (RT_UNLIKELY(off >= pRam->cb)) { do { pRam = pRam->CTX_SUFF(pNext); if (RT_UNLIKELY(!pRam)) break; off = GCPhys - pRam->GCPhys; } while (off >= pRam->cb); } return pRam; } /** * Gets the PGMPAGE structure for a guest page. * * @returns Pointer to the page on success. * @returns NULL on a VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS condition. * * @param pPGM PGM handle. * @param GCPhys The GC physical address. */ DECLINLINE(PPGMPAGE) pgmPhysGetPage(PPGM pPGM, RTGCPHYS GCPhys) { /* * Optimize for the first range. */ PPGMRAMRANGE pRam = pPGM->CTX_SUFF(pRamRanges); RTGCPHYS off = GCPhys - pRam->GCPhys; if (RT_UNLIKELY(off >= pRam->cb)) { do { pRam = pRam->CTX_SUFF(pNext); if (RT_UNLIKELY(!pRam)) return NULL; off = GCPhys - pRam->GCPhys; } while (off >= pRam->cb); } return &pRam->aPages[off >> PAGE_SHIFT]; } /** * Gets the PGMPAGE structure for a guest page. * * Old Phys code: Will make sure the page is present. * * @returns VBox status code. * @retval VINF_SUCCESS and a valid *ppPage on success. * @retval VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if the address isn't valid. * * @param pPGM PGM handle. * @param GCPhys The GC physical address. * @param ppPage Where to store the page pointer on success. */ DECLINLINE(int) pgmPhysGetPageEx(PPGM pPGM, RTGCPHYS GCPhys, PPPGMPAGE ppPage) { /* * Optimize for the first range. */ PPGMRAMRANGE pRam = pPGM->CTX_SUFF(pRamRanges); RTGCPHYS off = GCPhys - pRam->GCPhys; if (RT_UNLIKELY(off >= pRam->cb)) { do { pRam = pRam->CTX_SUFF(pNext); if (RT_UNLIKELY(!pRam)) { *ppPage = NULL; /* avoid incorrect and very annoying GCC warnings */ return VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS; } off = GCPhys - pRam->GCPhys; } while (off >= pRam->cb); } *ppPage = &pRam->aPages[off >> PAGE_SHIFT]; return VINF_SUCCESS; } /** * Gets the PGMPAGE structure for a guest page. * * Old Phys code: Will make sure the page is present. * * @returns VBox status code. * @retval VINF_SUCCESS and a valid *ppPage on success. * @retval VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if the address isn't valid. * * @param pPGM PGM handle. * @param GCPhys The GC physical address. * @param ppPage Where to store the page pointer on success. * @param ppRamHint Where to read and store the ram list hint. * The caller initializes this to NULL before the call. */ DECLINLINE(int) pgmPhysGetPageWithHintEx(PPGM pPGM, RTGCPHYS GCPhys, PPPGMPAGE ppPage, PPGMRAMRANGE *ppRamHint) { RTGCPHYS off; PPGMRAMRANGE pRam = *ppRamHint; if ( !pRam || RT_UNLIKELY((off = GCPhys - pRam->GCPhys) >= pRam->cb)) { pRam = pPGM->CTX_SUFF(pRamRanges); off = GCPhys - pRam->GCPhys; if (RT_UNLIKELY(off >= pRam->cb)) { do { pRam = pRam->CTX_SUFF(pNext); if (RT_UNLIKELY(!pRam)) { *ppPage = NULL; /* Kill the incorrect and extremely annoying GCC warnings. */ return VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS; } off = GCPhys - pRam->GCPhys; } while (off >= pRam->cb); } *ppRamHint = pRam; } *ppPage = &pRam->aPages[off >> PAGE_SHIFT]; return VINF_SUCCESS; } /** * Gets the PGMPAGE structure for a guest page together with the PGMRAMRANGE. * * @returns Pointer to the page on success. * @returns NULL on a VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS condition. * * @param pPGM PGM handle. * @param GCPhys The GC physical address. * @param ppRam Where to store the pointer to the PGMRAMRANGE. */ DECLINLINE(PPGMPAGE) pgmPhysGetPageAndRange(PPGM pPGM, RTGCPHYS GCPhys, PPGMRAMRANGE *ppRam) { /* * Optimize for the first range. */ PPGMRAMRANGE pRam = pPGM->CTX_SUFF(pRamRanges); RTGCPHYS off = GCPhys - pRam->GCPhys; if (RT_UNLIKELY(off >= pRam->cb)) { do { pRam = pRam->CTX_SUFF(pNext); if (RT_UNLIKELY(!pRam)) return NULL; off = GCPhys - pRam->GCPhys; } while (off >= pRam->cb); } *ppRam = pRam; return &pRam->aPages[off >> PAGE_SHIFT]; } /** * Gets the PGMPAGE structure for a guest page together with the PGMRAMRANGE. * * @returns Pointer to the page on success. * @returns NULL on a VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS condition. * * @param pPGM PGM handle. * @param GCPhys The GC physical address. * @param ppPage Where to store the pointer to the PGMPAGE structure. * @param ppRam Where to store the pointer to the PGMRAMRANGE structure. */ DECLINLINE(int) pgmPhysGetPageAndRangeEx(PPGM pPGM, RTGCPHYS GCPhys, PPPGMPAGE ppPage, PPGMRAMRANGE *ppRam) { /* * Optimize for the first range. */ PPGMRAMRANGE pRam = pPGM->CTX_SUFF(pRamRanges); RTGCPHYS off = GCPhys - pRam->GCPhys; if (RT_UNLIKELY(off >= pRam->cb)) { do { pRam = pRam->CTX_SUFF(pNext); if (RT_UNLIKELY(!pRam)) { *ppRam = NULL; /* Shut up silly GCC warnings. */ *ppPage = NULL; /* ditto */ return VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS; } off = GCPhys - pRam->GCPhys; } while (off >= pRam->cb); } *ppRam = pRam; *ppPage = &pRam->aPages[off >> PAGE_SHIFT]; return VINF_SUCCESS; } /** * Convert GC Phys to HC Phys. * * @returns VBox status. * @param pPGM PGM handle. * @param GCPhys The GC physical address. * @param pHCPhys Where to store the corresponding HC physical address. * * @deprecated Doesn't deal with zero, shared or write monitored pages. * Avoid when writing new code! */ DECLINLINE(int) pgmRamGCPhys2HCPhys(PPGM pPGM, RTGCPHYS GCPhys, PRTHCPHYS pHCPhys) { PPGMPAGE pPage; int rc = pgmPhysGetPageEx(pPGM, GCPhys, &pPage); if (RT_FAILURE(rc)) return rc; *pHCPhys = PGM_PAGE_GET_HCPHYS(pPage) | (GCPhys & PAGE_OFFSET_MASK); return VINF_SUCCESS; } #if defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) || defined(IN_RC) /** * Inlined version of the ring-0 version of the host page mapping code * that optimizes access to pages already in the set. * * @returns VINF_SUCCESS. Will bail out to ring-3 on failure. * @param pVCpu The current CPU. * @param HCPhys The physical address of the page. * @param ppv Where to store the mapping address. */ DECLINLINE(int) pgmRZDynMapHCPageInlined(PVMCPU pVCpu, RTHCPHYS HCPhys, void **ppv RTLOG_COMMA_SRC_POS_DECL) { PPGMMAPSET pSet = &pVCpu->pgm.s.AutoSet; STAM_PROFILE_START(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapHCPageInl, a); Assert(!(HCPhys & PAGE_OFFSET_MASK)); Assert(pSet->cEntries <= RT_ELEMENTS(pSet->aEntries)); unsigned iHash = PGMMAPSET_HASH(HCPhys); unsigned iEntry = pSet->aiHashTable[iHash]; if ( iEntry < pSet->cEntries && pSet->aEntries[iEntry].HCPhys == HCPhys && pSet->aEntries[iEntry].cInlinedRefs < UINT16_MAX - 1) { pSet->aEntries[iEntry].cInlinedRefs++; *ppv = pSet->aEntries[iEntry].pvPage; STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapHCPageInlHits); } else { STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapHCPageInlMisses); pgmRZDynMapHCPageCommon(pSet, HCPhys, ppv RTLOG_COMMA_SRC_POS_ARGS); } STAM_PROFILE_STOP(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapHCPageInl, a); return VINF_SUCCESS; } /** * Inlined version of the guest page mapping code that optimizes access to pages * already in the set. * * @returns VBox status code, see pgmRZDynMapGCPageCommon for details. * @param pVM The VM handle. * @param pVCpu The current CPU. * @param GCPhys The guest physical address of the page. * @param ppv Where to store the mapping address. */ DECLINLINE(int) pgmRZDynMapGCPageV2Inlined(PVM pVM, PVMCPU pVCpu, RTGCPHYS GCPhys, void **ppv RTLOG_COMMA_SRC_POS_DECL) { STAM_PROFILE_START(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInl, a); AssertMsg(!(GCPhys & PAGE_OFFSET_MASK), ("%RGp\n", GCPhys)); /* * Get the ram range. */ PPGMRAMRANGE pRam = pVM->pgm.s.CTX_SUFF(pRamRanges); RTGCPHYS off = GCPhys - pRam->GCPhys; if (RT_UNLIKELY(off >= pRam->cb /** @todo || page state stuff */)) { /* This case is not counted into StatRZDynMapGCPageInl. */ STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInlRamMisses); return pgmRZDynMapGCPageCommon(pVM, pVCpu, GCPhys, ppv RTLOG_COMMA_SRC_POS_ARGS); } RTHCPHYS HCPhys = PGM_PAGE_GET_HCPHYS(&pRam->aPages[off >> PAGE_SHIFT]); STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInlRamHits); /* * pgmRZDynMapHCPageInlined with out stats. */ PPGMMAPSET pSet = &pVCpu->pgm.s.AutoSet; Assert(!(HCPhys & PAGE_OFFSET_MASK)); Assert(pSet->cEntries <= RT_ELEMENTS(pSet->aEntries)); unsigned iHash = PGMMAPSET_HASH(HCPhys); unsigned iEntry = pSet->aiHashTable[iHash]; if ( iEntry < pSet->cEntries && pSet->aEntries[iEntry].HCPhys == HCPhys && pSet->aEntries[iEntry].cInlinedRefs < UINT16_MAX - 1) { pSet->aEntries[iEntry].cInlinedRefs++; *ppv = pSet->aEntries[iEntry].pvPage; STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInlHits); } else { STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInlMisses); pgmRZDynMapHCPageCommon(pSet, HCPhys, ppv RTLOG_COMMA_SRC_POS_ARGS); } STAM_PROFILE_STOP(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInl, a); return VINF_SUCCESS; } /** * Inlined version of the ring-0 version of guest page mapping that optimizes * access to pages already in the set. * * @returns VBox status code, see pgmRZDynMapGCPageCommon for details. * @param pVCpu The current CPU. * @param GCPhys The guest physical address of the page. * @param ppv Where to store the mapping address. */ DECLINLINE(int) pgmRZDynMapGCPageInlined(PVMCPU pVCpu, RTGCPHYS GCPhys, void **ppv RTLOG_COMMA_SRC_POS_DECL) { return pgmRZDynMapGCPageV2Inlined(pVCpu->CTX_SUFF(pVM), pVCpu, GCPhys, ppv RTLOG_COMMA_SRC_POS_ARGS); } /** * Inlined version of the ring-0 version of the guest byte mapping code * that optimizes access to pages already in the set. * * @returns VBox status code, see pgmRZDynMapGCPageCommon for details. * @param pVCpu The current CPU. * @param HCPhys The physical address of the page. * @param ppv Where to store the mapping address. The offset is * preserved. */ DECLINLINE(int) pgmRZDynMapGCPageOffInlined(PVMCPU pVCpu, RTGCPHYS GCPhys, void **ppv RTLOG_COMMA_SRC_POS_DECL) { STAM_PROFILE_START(&pVCpu->pgm.s.StatRZDynMapGCPageInl, a); /* * Get the ram range. */ PVM pVM = pVCpu->CTX_SUFF(pVM); PPGMRAMRANGE pRam = pVM->pgm.s.CTX_SUFF(pRamRanges); RTGCPHYS off = GCPhys - pRam->GCPhys; if (RT_UNLIKELY(off >= pRam->cb /** @todo || page state stuff */)) { /* This case is not counted into StatRZDynMapGCPageInl. */ STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInlRamMisses); return pgmRZDynMapGCPageCommon(pVM, pVCpu, GCPhys, ppv RTLOG_COMMA_SRC_POS_ARGS); } RTHCPHYS HCPhys = PGM_PAGE_GET_HCPHYS(&pRam->aPages[off >> PAGE_SHIFT]); STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInlRamHits); /* * pgmRZDynMapHCPageInlined with out stats. */ PPGMMAPSET pSet = &pVCpu->pgm.s.AutoSet; Assert(!(HCPhys & PAGE_OFFSET_MASK)); Assert(pSet->cEntries <= RT_ELEMENTS(pSet->aEntries)); unsigned iHash = PGMMAPSET_HASH(HCPhys); unsigned iEntry = pSet->aiHashTable[iHash]; if ( iEntry < pSet->cEntries && pSet->aEntries[iEntry].HCPhys == HCPhys && pSet->aEntries[iEntry].cInlinedRefs < UINT16_MAX - 1) { STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInlHits); pSet->aEntries[iEntry].cInlinedRefs++; *ppv = (void *)((uintptr_t)pSet->aEntries[iEntry].pvPage | (PAGE_OFFSET_MASK & (uintptr_t)GCPhys)); } else { STAM_COUNTER_INC(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInlMisses); pgmRZDynMapHCPageCommon(pSet, HCPhys, ppv RTLOG_COMMA_SRC_POS_ARGS); *ppv = (void *)((uintptr_t)*ppv | (PAGE_OFFSET_MASK & (uintptr_t)GCPhys)); } STAM_PROFILE_STOP(&pVCpu->pgm.s.CTX_SUFF(pStats)->StatRZDynMapGCPageInl, a); return VINF_SUCCESS; } #endif /* VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 */ #if defined(IN_RC) || defined(VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0) /** * Maps the page into current context (RC and maybe R0). * * @returns pointer to the mapping. * @param pVM Pointer to the PGM instance data. * @param pPage The page. */ DECLINLINE(void *) pgmPoolMapPageInlined(PVM pVM, PPGMPOOLPAGE pPage RTLOG_COMMA_SRC_POS_DECL) { if (pPage->idx >= PGMPOOL_IDX_FIRST) { Assert(pPage->idx < pVM->pgm.s.CTX_SUFF(pPool)->cCurPages); void *pv; pgmRZDynMapHCPageInlined(VMMGetCpu(pVM), pPage->Core.Key, &pv RTLOG_COMMA_SRC_POS_ARGS); return pv; } AssertFatalMsgFailed(("pgmPoolMapPageInlined invalid page index %x\n", pPage->idx)); } /** * Maps the page into current context (RC and maybe R0). * * @returns pointer to the mapping. * @param pVM Pointer to the PGM instance data. * @param pVCpu The current CPU. * @param pPage The page. */ DECLINLINE(void *) pgmPoolMapPageV2Inlined(PVM pVM, PVMCPU pVCpu, PPGMPOOLPAGE pPage RTLOG_COMMA_SRC_POS_DECL) { if (pPage->idx >= PGMPOOL_IDX_FIRST) { Assert(pPage->idx < pVM->pgm.s.CTX_SUFF(pPool)->cCurPages); void *pv; Assert(pVCpu == VMMGetCpu(pVM)); pgmRZDynMapHCPageInlined(pVCpu, pPage->Core.Key, &pv RTLOG_COMMA_SRC_POS_ARGS); return pv; } AssertFatalMsgFailed(("pgmPoolMapPageV2Inlined invalid page index %x\n", pPage->idx)); } #endif /* VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 || IN_RC */ #ifndef IN_RC /** * Queries the Physical TLB entry for a physical guest page, * attempting to load the TLB entry if necessary. * * @returns VBox status code. * @retval VINF_SUCCESS on success * @retval VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if it's not a valid physical address. * * @param pPGM The PGM instance handle. * @param GCPhys The address of the guest page. * @param ppTlbe Where to store the pointer to the TLB entry. */ DECLINLINE(int) pgmPhysPageQueryTlbe(PPGM pPGM, RTGCPHYS GCPhys, PPPGMPAGEMAPTLBE ppTlbe) { int rc; PPGMPAGEMAPTLBE pTlbe = &pPGM->CTXSUFF(PhysTlb).aEntries[PGM_PAGEMAPTLB_IDX(GCPhys)]; if (pTlbe->GCPhys == (GCPhys & X86_PTE_PAE_PG_MASK)) { STAM_COUNTER_INC(&pPGM->CTX_SUFF(pStats)->CTX_MID_Z(Stat,PageMapTlbHits)); rc = VINF_SUCCESS; } else rc = pgmPhysPageLoadIntoTlb(pPGM, GCPhys); *ppTlbe = pTlbe; return rc; } /** * Queries the Physical TLB entry for a physical guest page, * attempting to load the TLB entry if necessary. * * @returns VBox status code. * @retval VINF_SUCCESS on success * @retval VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS if it's not a valid physical address. * * @param pPGM The PGM instance handle. * @param pPage Pointer to the PGMPAGE structure corresponding to * GCPhys. * @param GCPhys The address of the guest page. * @param ppTlbe Where to store the pointer to the TLB entry. */ DECLINLINE(int) pgmPhysPageQueryTlbeWithPage(PPGM pPGM, PPGMPAGE pPage, RTGCPHYS GCPhys, PPPGMPAGEMAPTLBE ppTlbe) { int rc; PPGMPAGEMAPTLBE pTlbe = &pPGM->CTXSUFF(PhysTlb).aEntries[PGM_PAGEMAPTLB_IDX(GCPhys)]; if (pTlbe->GCPhys == (GCPhys & X86_PTE_PAE_PG_MASK)) { STAM_COUNTER_INC(&pPGM->CTX_SUFF(pStats)->CTX_MID_Z(Stat,PageMapTlbHits)); rc = VINF_SUCCESS; } else rc = pgmPhysPageLoadIntoTlbWithPage(pPGM, pPage, GCPhys); *ppTlbe = pTlbe; return rc; } #endif /* !IN_RC */ /** * Checks if the no-execute (NX) feature is active (EFER.NXE=1). * * Only used when the guest is in PAE or long mode. This is inlined so that we * can perform consistency checks in debug builds. * * @returns true if it is, false if it isn't. * @param pVCpu The current CPU. */ DECL_FORCE_INLINE(bool) pgmGstIsNoExecuteActive(PVMCPU pVCpu) { Assert(pVCpu->pgm.s.fNoExecuteEnabled == CPUMIsGuestNXEnabled(pVCpu)); Assert(CPUMIsGuestInPAEMode(pVCpu) || CPUMIsGuestInLongMode(pVCpu)); return pVCpu->pgm.s.fNoExecuteEnabled; } /** * Checks if the page size extension (PSE) is currently enabled (CR4.PSE=1). * * Only used when the guest is in paged 32-bit mode. This is inlined so that * we can perform consistency checks in debug builds. * * @returns true if it is, false if it isn't. * @param pVCpu The current CPU. */ DECL_FORCE_INLINE(bool) pgmGst32BitIsPageSizeExtActive(PVMCPU pVCpu) { Assert(pVCpu->pgm.s.fGst32BitPageSizeExtension == CPUMIsGuestPageSizeExtEnabled(pVCpu)); Assert(!CPUMIsGuestInPAEMode(pVCpu)); Assert(!CPUMIsGuestInLongMode(pVCpu)); return pVCpu->pgm.s.fGst32BitPageSizeExtension; } /** * Calculated the guest physical address of the large (4 MB) page in 32 bits paging mode. * Takes PSE-36 into account. * * @returns guest physical address * @param pPGM Pointer to the PGM instance data. * @param Pde Guest Pde */ DECLINLINE(RTGCPHYS) pgmGstGet4MBPhysPage(PPGM pPGM, X86PDE Pde) { RTGCPHYS GCPhys = Pde.u & X86_PDE4M_PG_MASK; GCPhys |= (RTGCPHYS)Pde.b.u8PageNoHigh << 32; return GCPhys & pPGM->GCPhys4MBPSEMask; } /** * Gets the address the guest page directory (32-bit paging). * * @returns VBox status code. * @param pVCpu The current CPU. * @param ppPd Where to return the mapping. This is always set. */ DECLINLINE(int) pgmGstGet32bitPDPtrEx(PVMCPU pVCpu, PX86PD *ppPd) { #ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 int rc = pgmRZDynMapGCPageInlined(pVCpu, pVCpu->pgm.s.GCPhysCR3, (void **)ppPd RTLOG_COMMA_SRC_POS); if (RT_FAILURE(rc)) { *ppPd = NULL; return rc; } #else *ppPd = pVCpu->pgm.s.CTX_SUFF(pGst32BitPd); if (RT_UNLIKELY(!*ppPd)) return pgmGstLazyMap32BitPD(pVCpu, ppPd); #endif return VINF_SUCCESS; } /** * Gets the address the guest page directory (32-bit paging). * * @returns Pointer the page directory entry in question. * @param pVCpu The current CPU. */ DECLINLINE(PX86PD) pgmGstGet32bitPDPtr(PVMCPU pVCpu) { #ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 PX86PD pGuestPD = NULL; int rc = pgmRZDynMapGCPageInlined(pVCpu, pVCpu->pgm.s.GCPhysCR3, (void **)&pGuestPD RTLOG_COMMA_SRC_POS); if (RT_FAILURE(rc)) { AssertMsg(rc == VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS, ("%Rrc\n", rc)); return NULL; } #else PX86PD pGuestPD = pVCpu->pgm.s.CTX_SUFF(pGst32BitPd); if (RT_UNLIKELY(!pGuestPD)) { int rc = pgmGstLazyMap32BitPD(pVCpu, &pGuestPD); if (RT_FAILURE(rc)) return NULL; } #endif return pGuestPD; } /** * Gets the guest page directory pointer table. * * @returns VBox status code. * @param pVCpu The current CPU. * @param ppPdpt Where to return the mapping. This is always set. */ DECLINLINE(int) pgmGstGetPaePDPTPtrEx(PVMCPU pVCpu, PX86PDPT *ppPdpt) { #ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 int rc = pgmRZDynMapGCPageOffInlined(pVCpu, pVCpu->pgm.s.GCPhysCR3, (void **)ppPdpt RTLOG_COMMA_SRC_POS); if (RT_FAILURE(rc)) { *ppPdpt = NULL; return rc; } #else *ppPdpt = pVCpu->pgm.s.CTX_SUFF(pGstPaePdpt); if (RT_UNLIKELY(!*ppPdpt)) return pgmGstLazyMapPaePDPT(pVCpu, ppPdpt); #endif return VINF_SUCCESS; } /** * Gets the guest page directory pointer table. * * @returns Pointer to the page directory in question. * @returns NULL if the page directory is not present or on an invalid page. * @param pVCpu The current CPU. */ DECLINLINE(PX86PDPT) pgmGstGetPaePDPTPtr(PVMCPU pVCpu) { PX86PDPT pGuestPdpt; int rc = pgmGstGetPaePDPTPtrEx(pVCpu, &pGuestPdpt); AssertMsg(RT_SUCCESS(rc) || rc == VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS, ("%Rrc\n", rc)); return pGuestPdpt; } /** * Gets the guest page directory pointer table entry for the specified address. * * @returns Pointer to the page directory in question. * @returns NULL if the page directory is not present or on an invalid page. * @param pVCpu The current CPU * @param GCPtr The address. */ DECLINLINE(PX86PDPE) pgmGstGetPaePDPEPtr(PVMCPU pVCpu, RTGCPTR GCPtr) { AssertGCPtr32(GCPtr); #ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 PX86PDPT pGuestPDPT = NULL; int rc = pgmRZDynMapGCPageOffInlined(pVCpu, pVCpu->pgm.s.GCPhysCR3, (void **)&pGuestPDPT RTLOG_COMMA_SRC_POS); AssertRCReturn(rc, NULL); #else PX86PDPT pGuestPDPT = pVCpu->pgm.s.CTX_SUFF(pGstPaePdpt); if (RT_UNLIKELY(!pGuestPDPT)) { int rc = pgmGstLazyMapPaePDPT(pVCpu, &pGuestPDPT); if (RT_FAILURE(rc)) return NULL; } #endif return &pGuestPDPT->a[(GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE]; } /** * Gets the page directory entry for the specified address. * * @returns The page directory entry in question. * @returns A non-present entry if the page directory is not present or on an invalid page. * @param pVCpu The handle of the virtual CPU. * @param GCPtr The address. */ DECLINLINE(X86PDEPAE) pgmGstGetPaePDE(PVMCPU pVCpu, RTGCPTR GCPtr) { AssertGCPtr32(GCPtr); PX86PDPT pGuestPDPT = pgmGstGetPaePDPTPtr(pVCpu); if (RT_LIKELY(pGuestPDPT)) { const unsigned iPdpt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE; if ( pGuestPDPT->a[iPdpt].n.u1Present && !(pGuestPDPT->a[iPdpt].u & pVCpu->pgm.s.fGstPaeMbzPdpeMask) ) { const unsigned iPD = (GCPtr >> X86_PD_PAE_SHIFT) & X86_PD_PAE_MASK; #ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 PX86PDPAE pGuestPD = NULL; int rc = pgmRZDynMapGCPageInlined(pVCpu, pGuestPDPT->a[iPdpt].u & X86_PDPE_PG_MASK, (void **)&pGuestPD RTLOG_COMMA_SRC_POS); if (RT_SUCCESS(rc)) return pGuestPD->a[iPD]; AssertMsg(rc == VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS, ("%Rrc\n", rc)); #else PX86PDPAE pGuestPD = pVCpu->pgm.s.CTX_SUFF(apGstPaePDs)[iPdpt]; if ( !pGuestPD || (pGuestPDPT->a[iPdpt].u & X86_PDPE_PG_MASK) != pVCpu->pgm.s.aGCPhysGstPaePDs[iPdpt]) pgmGstLazyMapPaePD(pVCpu, iPdpt, &pGuestPD); if (pGuestPD) return pGuestPD->a[iPD]; #endif } } X86PDEPAE ZeroPde = {0}; return ZeroPde; } /** * Gets the page directory pointer table entry for the specified address * and returns the index into the page directory * * @returns Pointer to the page directory in question. * @returns NULL if the page directory is not present or on an invalid page. * @param pVCpu The current CPU. * @param GCPtr The address. * @param piPD Receives the index into the returned page directory * @param pPdpe Receives the page directory pointer entry. Optional. */ DECLINLINE(PX86PDPAE) pgmGstGetPaePDPtr(PVMCPU pVCpu, RTGCPTR GCPtr, unsigned *piPD, PX86PDPE pPdpe) { AssertGCPtr32(GCPtr); /* The PDPE. */ PX86PDPT pGuestPDPT = pgmGstGetPaePDPTPtr(pVCpu); if (RT_UNLIKELY(!pGuestPDPT)) return NULL; const unsigned iPdpt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE; if (pPdpe) *pPdpe = pGuestPDPT->a[iPdpt]; if (!pGuestPDPT->a[iPdpt].n.u1Present) return NULL; if (RT_UNLIKELY(pVCpu->pgm.s.fGstPaeMbzPdpeMask & pGuestPDPT->a[iPdpt].u)) return NULL; /* The PDE. */ #ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 PX86PDPAE pGuestPD = NULL; int rc = pgmRZDynMapGCPageInlined(pVCpu, pGuestPDPT->a[iPdpt].u & X86_PDPE_PG_MASK, (void **)&pGuestPD RTLOG_COMMA_SRC_POS); if (RT_FAILURE(rc)) { AssertMsg(rc == VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS, ("%Rrc\n", rc)); return NULL; } #else PX86PDPAE pGuestPD = pVCpu->pgm.s.CTX_SUFF(apGstPaePDs)[iPdpt]; if ( !pGuestPD || (pGuestPDPT->a[iPdpt].u & X86_PDPE_PG_MASK) != pVCpu->pgm.s.aGCPhysGstPaePDs[iPdpt]) pgmGstLazyMapPaePD(pVCpu, iPdpt, &pGuestPD); #endif *piPD = (GCPtr >> X86_PD_PAE_SHIFT) & X86_PD_PAE_MASK; return pGuestPD; } #ifndef IN_RC /** * Gets the page map level-4 pointer for the guest. * * @returns VBox status code. * @param pVCpu The current CPU. * @param ppPml4 Where to return the mapping. Always set. */ DECLINLINE(int) pgmGstGetLongModePML4PtrEx(PVMCPU pVCpu, PX86PML4 *ppPml4) { #ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 int rc = pgmRZDynMapGCPageInlined(pVCpu, pVCpu->pgm.s.GCPhysCR3, (void **)ppPml4 RTLOG_COMMA_SRC_POS); if (RT_FAILURE(rc)) { *ppPml4 = NULL; return rc; } #else *ppPml4 = pVCpu->pgm.s.CTX_SUFF(pGstAmd64Pml4); if (RT_UNLIKELY(!*ppPml4)) return pgmGstLazyMapPml4(pVCpu, ppPml4); #endif return VINF_SUCCESS; } /** * Gets the page map level-4 pointer for the guest. * * @returns Pointer to the PML4 page. * @param pVCpu The current CPU. */ DECLINLINE(PX86PML4) pgmGstGetLongModePML4Ptr(PVMCPU pVCpu) { PX86PML4 pGuestPml4; int rc = pgmGstGetLongModePML4PtrEx(pVCpu, &pGuestPml4); AssertMsg(RT_SUCCESS(rc) || rc == VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS, ("%Rrc\n", rc)); NOREF(rc); return pGuestPml4; } /** * Gets the pointer to a page map level-4 entry. * * @returns Pointer to the PML4 entry. * @param pVCpu The current CPU. * @param iPml4 The index. * @remarks Only used by AssertCR3. */ DECLINLINE(PX86PML4E) pgmGstGetLongModePML4EPtr(PVMCPU pVCpu, unsigned int iPml4) { #ifdef VBOX_WITH_2X_4GB_ADDR_SPACE_IN_R0 PX86PML4 pGuestPml4; int rc = pgmRZDynMapGCPageInlined(pVCpu, pVCpu->pgm.s.GCPhysCR3, (void **)&pGuestPml4 RTLOG_COMMA_SRC_POS); AssertRCReturn(rc, NULL); #else PX86PML4 pGuestPml4 = pVCpu->pgm.s.CTX_SUFF(pGstAmd64Pml4); if (RT_UNLIKELY(!pGuestPml4)) { int rc = pgmGstLazyMapPml4(pVCpu, &pGuestPml4); AssertRCReturn(rc, NULL); } #endif return &pGuestPml4->a[iPml4]; } /** * Gets the page directory entry for the specified address. * * @returns The page directory entry in question. * @returns A non-present entry if the page directory is not present or on an invalid page. * @param pVCpu The current CPU. * @param GCPtr The address. */ DECLINLINE(X86PDEPAE) pgmGstGetLongModePDE(PVMCPU pVCpu, RTGCPTR64 GCPtr) { /* * Note! To keep things simple, ASSUME invalid physical addresses will * cause X86_TRAP_PF_RSVD. This isn't a problem until we start * supporing 52-bit wide physical guest addresses. */ PCX86PML4 pGuestPml4 = pgmGstGetLongModePML4Ptr(pVCpu); const unsigned iPml4 = (GCPtr >> X86_PML4_SHIFT) & X86_PML4_MASK; if ( RT_LIKELY(pGuestPml4) && pGuestPml4->a[iPml4].n.u1Present && !(pGuestPml4->a[iPml4].u & pVCpu->pgm.s.fGstAmd64MbzPml4eMask) ) { PCX86PDPT pPdptTemp; int rc = PGM_GCPHYS_2_PTR_BY_VMCPU(pVCpu, pGuestPml4->a[iPml4].u & X86_PML4E_PG_MASK, &pPdptTemp); if (RT_SUCCESS(rc)) { const unsigned iPdpt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_AMD64; if ( pPdptTemp->a[iPdpt].n.u1Present && !(pPdptTemp->a[iPdpt].u & pVCpu->pgm.s.fGstAmd64MbzPdpeMask) ) { PCX86PDPAE pPD; rc = PGM_GCPHYS_2_PTR_BY_VMCPU(pVCpu, pPdptTemp->a[iPdpt].u & X86_PDPE_PG_MASK, &pPD); if (RT_SUCCESS(rc)) { const unsigned iPD = (GCPtr >> X86_PD_PAE_SHIFT) & X86_PD_PAE_MASK; return pPD->a[iPD]; } } } AssertMsg(RT_SUCCESS(rc) || rc == VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS, ("%Rrc\n", rc)); } X86PDEPAE ZeroPde = {0}; return ZeroPde; } /** * Gets the GUEST page directory pointer for the specified address. * * @returns The page directory in question. * @returns NULL if the page directory is not present or on an invalid page. * @param pVCpu The current CPU. * @param GCPtr The address. * @param ppPml4e Page Map Level-4 Entry (out) * @param pPdpe Page directory pointer table entry (out) * @param piPD Receives the index into the returned page directory */ DECLINLINE(PX86PDPAE) pgmGstGetLongModePDPtr(PVMCPU pVCpu, RTGCPTR64 GCPtr, PX86PML4E *ppPml4e, PX86PDPE pPdpe, unsigned *piPD) { /* The PMLE4. */ PX86PML4 pGuestPml4 = pgmGstGetLongModePML4Ptr(pVCpu); if (RT_UNLIKELY(!pGuestPml4)) return NULL; const unsigned iPml4 = (GCPtr >> X86_PML4_SHIFT) & X86_PML4_MASK; PCX86PML4E pPml4e = *ppPml4e = &pGuestPml4->a[iPml4]; if (!pPml4e->n.u1Present) return NULL; if (RT_UNLIKELY(pPml4e->u & pVCpu->pgm.s.fGstAmd64MbzPml4eMask)) return NULL; /* The PDPE. */ PCX86PDPT pPdptTemp; int rc = PGM_GCPHYS_2_PTR_BY_VMCPU(pVCpu, pPml4e->u & X86_PML4E_PG_MASK, &pPdptTemp); if (RT_FAILURE(rc)) { AssertMsg(rc == VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS, ("%Rrc\n", rc)); return NULL; } const unsigned iPdpt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_AMD64; *pPdpe = pPdptTemp->a[iPdpt]; if (!pPdpe->n.u1Present) return NULL; if (RT_UNLIKELY(pPdpe->u & pVCpu->pgm.s.fGstAmd64MbzPdpeMask)) return NULL; /* The PDE. */ PX86PDPAE pPD; rc = PGM_GCPHYS_2_PTR_BY_VMCPU(pVCpu, pPdptTemp->a[iPdpt].u & X86_PDPE_PG_MASK, &pPD); if (RT_FAILURE(rc)) { AssertMsg(rc == VERR_PGM_INVALID_GC_PHYSICAL_ADDRESS, ("%Rrc\n", rc)); return NULL; } *piPD = (GCPtr >> X86_PD_PAE_SHIFT) & X86_PD_PAE_MASK; return pPD; } #endif /* !IN_RC */ /** * Gets the shadow page directory, 32-bit. * * @returns Pointer to the shadow 32-bit PD. * @param pVCpu The current CPU. */ DECLINLINE(PX86PD) pgmShwGet32BitPDPtr(PVMCPU pVCpu) { return (PX86PD)PGMPOOL_PAGE_2_PTR_V2(pVCpu->CTX_SUFF(pVM), pVCpu, pVCpu->pgm.s.CTX_SUFF(pShwPageCR3)); } /** * Gets the shadow page directory entry for the specified address, 32-bit. * * @returns Shadow 32-bit PDE. * @param pVCpu The current CPU. * @param GCPtr The address. */ DECLINLINE(X86PDE) pgmShwGet32BitPDE(PVMCPU pVCpu, RTGCPTR GCPtr) { const unsigned iPd = (GCPtr >> X86_PD_SHIFT) & X86_PD_MASK; PX86PD pShwPde = pgmShwGet32BitPDPtr(pVCpu); if (!pShwPde) { X86PDE ZeroPde = {0}; return ZeroPde; } return pShwPde->a[iPd]; } /** * Gets the pointer to the shadow page directory entry for the specified * address, 32-bit. * * @returns Pointer to the shadow 32-bit PDE. * @param pVCpu The current CPU. * @param GCPtr The address. */ DECLINLINE(PX86PDE) pgmShwGet32BitPDEPtr(PVMCPU pVCpu, RTGCPTR GCPtr) { const unsigned iPd = (GCPtr >> X86_PD_SHIFT) & X86_PD_MASK; PX86PD pPde = pgmShwGet32BitPDPtr(pVCpu); AssertReturn(pPde, NULL); return &pPde->a[iPd]; } /** * Gets the shadow page pointer table, PAE. * * @returns Pointer to the shadow PAE PDPT. * @param pVCpu The current CPU. */ DECLINLINE(PX86PDPT) pgmShwGetPaePDPTPtr(PVMCPU pVCpu) { return (PX86PDPT)PGMPOOL_PAGE_2_PTR_V2(pVCpu->CTX_SUFF(pVM), pVCpu, pVCpu->pgm.s.CTX_SUFF(pShwPageCR3)); } /** * Gets the shadow page directory for the specified address, PAE. * * @returns Pointer to the shadow PD. * @param pVCpu The current CPU. * @param GCPtr The address. */ DECLINLINE(PX86PDPAE) pgmShwGetPaePDPtr(PVMCPU pVCpu, RTGCPTR GCPtr) { const unsigned iPdpt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE; PX86PDPT pPdpt = pgmShwGetPaePDPTPtr(pVCpu); if (!pPdpt->a[iPdpt].n.u1Present) return NULL; /* Fetch the pgm pool shadow descriptor. */ PVM pVM = pVCpu->CTX_SUFF(pVM); PPGMPOOLPAGE pShwPde = pgmPoolGetPage(pVM->pgm.s.CTX_SUFF(pPool), pPdpt->a[iPdpt].u & X86_PDPE_PG_MASK); AssertReturn(pShwPde, NULL); return (PX86PDPAE)PGMPOOL_PAGE_2_PTR_V2(pVM, pVCpu, pShwPde); } /** * Gets the shadow page directory for the specified address, PAE. * * @returns Pointer to the shadow PD. * @param pVCpu The current CPU. * @param GCPtr The address. */ DECLINLINE(PX86PDPAE) pgmShwGetPaePDPtr(PVMCPU pVCpu, PX86PDPT pPdpt, RTGCPTR GCPtr) { const unsigned iPdpt = (GCPtr >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE; if (!pPdpt->a[iPdpt].n.u1Present) return NULL; /* Fetch the pgm pool shadow descriptor. */ PVM pVM = pVCpu->CTX_SUFF(pVM); PPGMPOOLPAGE pShwPde = pgmPoolGetPage(pVM->pgm.s.CTX_SUFF(pPool), pPdpt->a[iPdpt].u & X86_PDPE_PG_MASK); AssertReturn(pShwPde, NULL); return (PX86PDPAE)PGMPOOL_PAGE_2_PTR_V2(pVM, pVCpu, pShwPde); } /** * Gets the shadow page directory entry, PAE. * * @returns PDE. * @param pVCpu The current CPU. * @param GCPtr The address. */ DECLINLINE(X86PDEPAE) pgmShwGetPaePDE(PVMCPU pVCpu, RTGCPTR GCPtr) { const unsigned iPd = (GCPtr >> X86_PD_PAE_SHIFT) & X86_PD_PAE_MASK; PX86PDPAE pShwPde = pgmShwGetPaePDPtr(pVCpu, GCPtr); if (!pShwPde) { X86PDEPAE ZeroPde = {0}; return ZeroPde; } return pShwPde->a[iPd]; } /** * Gets the pointer to the shadow page directory entry for an address, PAE. * * @returns Pointer to the PDE. * @param pVCpu The current CPU. * @param GCPtr The address. * @remarks Only used by AssertCR3. */ DECLINLINE(PX86PDEPAE) pgmShwGetPaePDEPtr(PVMCPU pVCpu, RTGCPTR GCPtr) { const unsigned iPd = (GCPtr >> X86_PD_PAE_SHIFT) & X86_PD_PAE_MASK; PX86PDPAE pPde = pgmShwGetPaePDPtr(pVCpu, GCPtr); AssertReturn(pPde, NULL); return &pPde->a[iPd]; } #ifndef IN_RC /** * Gets the shadow page map level-4 pointer. * * @returns Pointer to the shadow PML4. * @param pVCpu The current CPU. */ DECLINLINE(PX86PML4) pgmShwGetLongModePML4Ptr(PVMCPU pVCpu) { return (PX86PML4)PGMPOOL_PAGE_2_PTR_V2(pVCpu->CTX_SUFF(pVM), pVCpu, pVCpu->pgm.s.CTX_SUFF(pShwPageCR3)); } /** * Gets the shadow page map level-4 entry for the specified address. * * @returns The entry. * @param pVCpu The current CPU. * @param GCPtr The address. */ DECLINLINE(X86PML4E) pgmShwGetLongModePML4E(PVMCPU pVCpu, RTGCPTR GCPtr) { const unsigned iPml4 = ((RTGCUINTPTR64)GCPtr >> X86_PML4_SHIFT) & X86_PML4_MASK; PX86PML4 pShwPml4 = pgmShwGetLongModePML4Ptr(pVCpu); if (!pShwPml4) { X86PML4E ZeroPml4e = {0}; return ZeroPml4e; } return pShwPml4->a[iPml4]; } /** * Gets the pointer to the specified shadow page map level-4 entry. * * @returns The entry. * @param pVCpu The current CPU. * @param iPml4 The PML4 index. */ DECLINLINE(PX86PML4E) pgmShwGetLongModePML4EPtr(PVMCPU pVCpu, unsigned int iPml4) { PX86PML4 pShwPml4 = pgmShwGetLongModePML4Ptr(pVCpu); if (!pShwPml4) return NULL; return &pShwPml4->a[iPml4]; } #endif /* !IN_RC */ /** * Cached physical handler lookup. * * @returns Physical handler covering @a GCPhys. * @param pVM The VM handle. * @param GCPhys The lookup address. */ DECLINLINE(PPGMPHYSHANDLER) pgmHandlerPhysicalLookup(PVM pVM, RTGCPHYS GCPhys) { PPGMPHYSHANDLER pHandler = pVM->pgm.s.CTX_SUFF(pLastPhysHandler); if ( pHandler && GCPhys >= pHandler->Core.Key && GCPhys < pHandler->Core.KeyLast) { STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,PhysHandlerLookupHits)); return pHandler; } STAM_COUNTER_INC(&pVM->pgm.s.CTX_SUFF(pStats)->CTX_MID_Z(Stat,PhysHandlerLookupMisses)); pHandler = (PPGMPHYSHANDLER)RTAvlroGCPhysRangeGet(&pVM->pgm.s.CTX_SUFF(pTrees)->PhysHandlers, GCPhys); if (pHandler) pVM->pgm.s.CTX_SUFF(pLastPhysHandler) = pHandler; return pHandler; } /** * Gets the page state for a physical handler. * * @returns The physical handler page state. * @param pCur The physical handler in question. */ DECLINLINE(unsigned) pgmHandlerPhysicalCalcState(PPGMPHYSHANDLER pCur) { switch (pCur->enmType) { case PGMPHYSHANDLERTYPE_PHYSICAL_WRITE: return PGM_PAGE_HNDL_PHYS_STATE_WRITE; case PGMPHYSHANDLERTYPE_MMIO: case PGMPHYSHANDLERTYPE_PHYSICAL_ALL: return PGM_PAGE_HNDL_PHYS_STATE_ALL; default: AssertFatalMsgFailed(("Invalid type %d\n", pCur->enmType)); } } /** * Gets the page state for a virtual handler. * * @returns The virtual handler page state. * @param pCur The virtual handler in question. * @remarks This should never be used on a hypervisor access handler. */ DECLINLINE(unsigned) pgmHandlerVirtualCalcState(PPGMVIRTHANDLER pCur) { switch (pCur->enmType) { case PGMVIRTHANDLERTYPE_WRITE: return PGM_PAGE_HNDL_VIRT_STATE_WRITE; case PGMVIRTHANDLERTYPE_ALL: return PGM_PAGE_HNDL_VIRT_STATE_ALL; default: AssertFatalMsgFailed(("Invalid type %d\n", pCur->enmType)); } } /** * Clears one physical page of a virtual handler * * @param pPGM Pointer to the PGM instance. * @param pCur Virtual handler structure * @param iPage Physical page index * * @remark Only used when PGM_SYNC_UPDATE_PAGE_BIT_VIRTUAL is being set, so no * need to care about other handlers in the same page. */ DECLINLINE(void) pgmHandlerVirtualClearPage(PPGM pPGM, PPGMVIRTHANDLER pCur, unsigned iPage) { const PPGMPHYS2VIRTHANDLER pPhys2Virt = &pCur->aPhysToVirt[iPage]; /* * Remove the node from the tree (it's supposed to be in the tree if we get here!). */ #ifdef VBOX_STRICT_PGM_HANDLER_VIRTUAL AssertReleaseMsg(pPhys2Virt->offNextAlias & PGMPHYS2VIRTHANDLER_IN_TREE, ("pPhys2Virt=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n", pPhys2Virt, pPhys2Virt->Core.Key, pPhys2Virt->Core.KeyLast, pPhys2Virt->offVirtHandler, pPhys2Virt->offNextAlias)); #endif if (pPhys2Virt->offNextAlias & PGMPHYS2VIRTHANDLER_IS_HEAD) { /* We're the head of the alias chain. */ PPGMPHYS2VIRTHANDLER pRemove = (PPGMPHYS2VIRTHANDLER)RTAvlroGCPhysRemove(&pPGM->CTX_SUFF(pTrees)->PhysToVirtHandlers, pPhys2Virt->Core.Key); NOREF(pRemove); #ifdef VBOX_STRICT_PGM_HANDLER_VIRTUAL AssertReleaseMsg(pRemove != NULL, ("pPhys2Virt=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n", pPhys2Virt, pPhys2Virt->Core.Key, pPhys2Virt->Core.KeyLast, pPhys2Virt->offVirtHandler, pPhys2Virt->offNextAlias)); AssertReleaseMsg(pRemove == pPhys2Virt, ("wanted: pPhys2Virt=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n" " got: pRemove=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n", pPhys2Virt, pPhys2Virt->Core.Key, pPhys2Virt->Core.KeyLast, pPhys2Virt->offVirtHandler, pPhys2Virt->offNextAlias, pRemove, pRemove->Core.Key, pRemove->Core.KeyLast, pRemove->offVirtHandler, pRemove->offNextAlias)); #endif if (pPhys2Virt->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK) { /* Insert the next list in the alias chain into the tree. */ PPGMPHYS2VIRTHANDLER pNext = (PPGMPHYS2VIRTHANDLER)((intptr_t)pPhys2Virt + (pPhys2Virt->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK)); #ifdef VBOX_STRICT_PGM_HANDLER_VIRTUAL AssertReleaseMsg(pNext->offNextAlias & PGMPHYS2VIRTHANDLER_IN_TREE, ("pNext=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32}\n", pNext, pNext->Core.Key, pNext->Core.KeyLast, pNext->offVirtHandler, pNext->offNextAlias)); #endif pNext->offNextAlias |= PGMPHYS2VIRTHANDLER_IS_HEAD; bool fRc = RTAvlroGCPhysInsert(&pPGM->CTX_SUFF(pTrees)->PhysToVirtHandlers, &pNext->Core); AssertRelease(fRc); } } else { /* Locate the previous node in the alias chain. */ PPGMPHYS2VIRTHANDLER pPrev = (PPGMPHYS2VIRTHANDLER)RTAvlroGCPhysGet(&pPGM->CTX_SUFF(pTrees)->PhysToVirtHandlers, pPhys2Virt->Core.Key); #ifdef VBOX_STRICT_PGM_HANDLER_VIRTUAL AssertReleaseMsg(pPrev != pPhys2Virt, ("pPhys2Virt=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32} pPrev=%p\n", pPhys2Virt, pPhys2Virt->Core.Key, pPhys2Virt->Core.KeyLast, pPhys2Virt->offVirtHandler, pPhys2Virt->offNextAlias, pPrev)); #endif for (;;) { PPGMPHYS2VIRTHANDLER pNext = (PPGMPHYS2VIRTHANDLER)((intptr_t)pPrev + (pPrev->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK)); if (pNext == pPhys2Virt) { /* unlink. */ LogFlow(("pgmHandlerVirtualClearPage: removed %p:{.offNextAlias=%#RX32} from alias chain. prev %p:{.offNextAlias=%#RX32} [%RGp-%RGp]\n", pPhys2Virt, pPhys2Virt->offNextAlias, pPrev, pPrev->offNextAlias, pPhys2Virt->Core.Key, pPhys2Virt->Core.KeyLast)); if (!(pPhys2Virt->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK)) pPrev->offNextAlias &= ~PGMPHYS2VIRTHANDLER_OFF_MASK; else { PPGMPHYS2VIRTHANDLER pNewNext = (PPGMPHYS2VIRTHANDLER)((intptr_t)pPhys2Virt + (pPhys2Virt->offNextAlias & PGMPHYS2VIRTHANDLER_OFF_MASK)); pPrev->offNextAlias = ((intptr_t)pNewNext - (intptr_t)pPrev) | (pPrev->offNextAlias & ~PGMPHYS2VIRTHANDLER_OFF_MASK); } break; } /* next */ if (pNext == pPrev) { #ifdef VBOX_STRICT_PGM_HANDLER_VIRTUAL AssertReleaseMsg(pNext != pPrev, ("pPhys2Virt=%p:{.Core.Key=%RGp, .Core.KeyLast=%RGp, .offVirtHandler=%#RX32, .offNextAlias=%#RX32} pPrev=%p\n", pPhys2Virt, pPhys2Virt->Core.Key, pPhys2Virt->Core.KeyLast, pPhys2Virt->offVirtHandler, pPhys2Virt->offNextAlias, pPrev)); #endif break; } pPrev = pNext; } } Log2(("PHYS2VIRT: Removing %RGp-%RGp %#RX32 %s\n", pPhys2Virt->Core.Key, pPhys2Virt->Core.KeyLast, pPhys2Virt->offNextAlias, R3STRING(pCur->pszDesc))); pPhys2Virt->offNextAlias = 0; pPhys2Virt->Core.KeyLast = NIL_RTGCPHYS; /* require reinsert */ /* * Clear the ram flags for this page. */ PPGMPAGE pPage = pgmPhysGetPage(pPGM, pPhys2Virt->Core.Key); AssertReturnVoid(pPage); PGM_PAGE_SET_HNDL_VIRT_STATE(pPage, PGM_PAGE_HNDL_VIRT_STATE_NONE); } /** * Internal worker for finding a 'in-use' shadow page give by it's physical address. * * @returns Pointer to the shadow page structure. * @param pPool The pool. * @param idx The pool page index. */ DECLINLINE(PPGMPOOLPAGE) pgmPoolGetPageByIdx(PPGMPOOL pPool, unsigned idx) { AssertFatalMsg(idx >= PGMPOOL_IDX_FIRST && idx < pPool->cCurPages, ("idx=%d\n", idx)); return &pPool->aPages[idx]; } /** * Clear references to guest physical memory. * * @param pPool The pool. * @param pPoolPage The pool page. * @param pPhysPage The physical guest page tracking structure. * @param iPte Shadow PTE index */ DECLINLINE(void) pgmTrackDerefGCPhys(PPGMPOOL pPool, PPGMPOOLPAGE pPoolPage, PPGMPAGE pPhysPage, uint16_t iPte) { /* * Just deal with the simple case here. */ # ifdef LOG_ENABLED const unsigned uOrg = PGM_PAGE_GET_TRACKING(pPhysPage); # endif const unsigned cRefs = PGM_PAGE_GET_TD_CREFS(pPhysPage); if (cRefs == 1) { Assert(pPoolPage->idx == PGM_PAGE_GET_TD_IDX(pPhysPage)); Assert(iPte == PGM_PAGE_GET_PTE_INDEX(pPhysPage)); /* Invalidate the tracking data. */ PGM_PAGE_SET_TRACKING(pPhysPage, 0); } else pgmPoolTrackPhysExtDerefGCPhys(pPool, pPoolPage, pPhysPage, iPte); Log2(("pgmTrackDerefGCPhys: %x -> %x pPhysPage=%R[pgmpage]\n", uOrg, PGM_PAGE_GET_TRACKING(pPhysPage), pPhysPage )); } /** * Moves the page to the head of the age list. * * This is done when the cached page is used in one way or another. * * @param pPool The pool. * @param pPage The cached page. */ DECLINLINE(void) pgmPoolCacheUsed(PPGMPOOL pPool, PPGMPOOLPAGE pPage) { PVM pVM = pPool->CTX_SUFF(pVM); pgmLock(pVM); /* * Move to the head of the age list. */ if (pPage->iAgePrev != NIL_PGMPOOL_IDX) { /* unlink */ pPool->aPages[pPage->iAgePrev].iAgeNext = pPage->iAgeNext; if (pPage->iAgeNext != NIL_PGMPOOL_IDX) pPool->aPages[pPage->iAgeNext].iAgePrev = pPage->iAgePrev; else pPool->iAgeTail = pPage->iAgePrev; /* insert at head */ pPage->iAgePrev = NIL_PGMPOOL_IDX; pPage->iAgeNext = pPool->iAgeHead; Assert(pPage->iAgeNext != NIL_PGMPOOL_IDX); /* we would've already been head then */ pPool->iAgeHead = pPage->idx; pPool->aPages[pPage->iAgeNext].iAgePrev = pPage->idx; } pgmUnlock(pVM); } /** * Locks a page to prevent flushing (important for cr3 root pages or shadow pae pd pages). * * @param pVM VM Handle. * @param pPage PGM pool page */ DECLINLINE(void) pgmPoolLockPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage) { Assert(PGMIsLockOwner(pPool->CTX_SUFF(pVM))); ASMAtomicIncU32(&pPage->cLocked); } /** * Unlocks a page to allow flushing again * * @param pVM VM Handle. * @param pPage PGM pool page */ DECLINLINE(void) pgmPoolUnlockPage(PPGMPOOL pPool, PPGMPOOLPAGE pPage) { Assert(PGMIsLockOwner(pPool->CTX_SUFF(pVM))); Assert(pPage->cLocked); ASMAtomicDecU32(&pPage->cLocked); } /** * Checks if the page is locked (e.g. the active CR3 or one of the four PDs of a PAE PDPT) * * @returns VBox status code. * @param pPage PGM pool page */ DECLINLINE(bool) pgmPoolIsPageLocked(PPGM pPGM, PPGMPOOLPAGE pPage) { if (pPage->cLocked) { LogFlow(("pgmPoolIsPageLocked found root page %d\n", pPage->enmKind)); if (pPage->cModifications) pPage->cModifications = 1; /* reset counter (can't use 0, or else it will be reinserted in the modified list) */ return true; } return false; } /** * Tells if mappings are to be put into the shadow page table or not. * * @returns boolean result * @param pVM VM handle. */ DECL_FORCE_INLINE(bool) pgmMapAreMappingsEnabled(PPGM pPGM) { #ifdef PGM_WITHOUT_MAPPINGS /* There are no mappings in VT-x and AMD-V mode. */ Assert(pPGM->fMappingsDisabled); return false; #else return !pPGM->fMappingsDisabled; #endif } /** * Checks if the mappings are floating and enabled. * * @returns true / false. * @param pVM The VM handle. */ DECL_FORCE_INLINE(bool) pgmMapAreMappingsFloating(PPGM pPGM) { #ifdef PGM_WITHOUT_MAPPINGS /* There are no mappings in VT-x and AMD-V mode. */ Assert(pPGM->fMappingsDisabled); return false; #else return !pPGM->fMappingsDisabled && !pPGM->fMappingsFixed; #endif } /** @} */ #endif