/* $Id: PGMShw.h 16376 2009-01-29 16:46:31Z vboxsync $ */ /** @file * VBox - Page Manager / Monitor, Shadow Paging Template. */ /* * Copyright (C) 2006-2007 Sun Microsystems, Inc. * * 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. * * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa * Clara, CA 95054 USA or visit http://www.sun.com if you need * additional information or have any questions. */ /******************************************************************************* * Defined Constants And Macros * *******************************************************************************/ #undef SHWPT #undef PSHWPT #undef SHWPTE #undef PSHWPTE #undef SHWPD #undef PSHWPD #undef SHWPDE #undef PSHWPDE #undef SHW_PDE_PG_MASK #undef SHW_PD_SHIFT #undef SHW_PD_MASK #undef SHW_PTE_PG_MASK #undef SHW_PT_SHIFT #undef SHW_PT_MASK #undef SHW_TOTAL_PD_ENTRIES #undef SHW_PDPT_SHIFT #undef SHW_PDPT_MASK #undef SHW_PDPE_PG_MASK #undef SHW_POOL_ROOT_IDX #if PGM_SHW_TYPE == PGM_TYPE_32BIT # define SHWPT X86PT # define PSHWPT PX86PT # define SHWPTE X86PTE # define PSHWPTE PX86PTE # define SHWPD X86PD # define PSHWPD PX86PD # define SHWPDE X86PDE # define PSHWPDE PX86PDE # define SHW_PDE_PG_MASK X86_PDE_PG_MASK # define SHW_PD_SHIFT X86_PD_SHIFT # define SHW_PD_MASK X86_PD_MASK # define SHW_TOTAL_PD_ENTRIES X86_PG_ENTRIES # define SHW_PTE_PG_MASK X86_PTE_PG_MASK # define SHW_PT_SHIFT X86_PT_SHIFT # define SHW_PT_MASK X86_PT_MASK # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_PD #elif PGM_SHW_TYPE == PGM_TYPE_EPT # define SHWPT EPTPT # define PSHWPT PEPTPT # define SHWPTE EPTPTE # define PSHWPTE PEPTPTE # define SHWPD EPTPD # define PSHWPD PEPTPD # define SHWPDE EPTPDE # define PSHWPDE PEPTPDE # define SHW_PDE_PG_MASK EPT_PDE_PG_MASK # define SHW_PD_SHIFT EPT_PD_SHIFT # define SHW_PD_MASK EPT_PD_MASK # define SHW_PTE_PG_MASK EPT_PTE_PG_MASK # define SHW_PT_SHIFT EPT_PT_SHIFT # define SHW_PT_MASK EPT_PT_MASK # define SHW_PDPT_SHIFT EPT_PDPT_SHIFT # define SHW_PDPT_MASK EPT_PDPT_MASK # define SHW_PDPE_PG_MASK EPT_PDPE_PG_MASK # define SHW_TOTAL_PD_ENTRIES (EPT_PG_AMD64_ENTRIES*EPT_PG_AMD64_PDPE_ENTRIES) # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_NESTED_ROOT /* do not use! exception is real mode & protected mode without paging. */ #else # define SHWPT X86PTPAE # define PSHWPT PX86PTPAE # define SHWPTE X86PTEPAE # define PSHWPTE PX86PTEPAE # define SHWPD X86PDPAE # define PSHWPD PX86PDPAE # define SHWPDE X86PDEPAE # define PSHWPDE PX86PDEPAE # define SHW_PDE_PG_MASK X86_PDE_PAE_PG_MASK # define SHW_PD_SHIFT X86_PD_PAE_SHIFT # define SHW_PD_MASK X86_PD_PAE_MASK # define SHW_PTE_PG_MASK X86_PTE_PAE_PG_MASK # define SHW_PT_SHIFT X86_PT_PAE_SHIFT # define SHW_PT_MASK X86_PT_PAE_MASK # if PGM_SHW_TYPE == PGM_TYPE_AMD64 # define SHW_PDPT_SHIFT X86_PDPT_SHIFT # define SHW_PDPT_MASK X86_PDPT_MASK_AMD64 # define SHW_PDPE_PG_MASK X86_PDPE_PG_MASK # define SHW_TOTAL_PD_ENTRIES (X86_PG_AMD64_ENTRIES*X86_PG_AMD64_PDPE_ENTRIES) # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_AMD64_CR3 # else /* 32 bits PAE mode */ # define SHW_PDPT_SHIFT X86_PDPT_SHIFT # define SHW_PDPT_MASK X86_PDPT_MASK_PAE # define SHW_PDPE_PG_MASK X86_PDPE_PG_MASK # define SHW_TOTAL_PD_ENTRIES (X86_PG_PAE_ENTRIES*X86_PG_PAE_PDPE_ENTRIES) # ifdef VBOX_WITH_PGMPOOL_PAGING_ONLY # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_PDPT # else # define SHW_POOL_ROOT_IDX PGMPOOL_IDX_PAE_PD # endif # endif #endif /******************************************************************************* * Internal Functions * *******************************************************************************/ __BEGIN_DECLS /* r3 */ PGM_SHW_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0); PGM_SHW_DECL(int, Enter)(PVM pVM); PGM_SHW_DECL(int, Relocate)(PVM pVM, RTGCPTR offDelta); PGM_SHW_DECL(int, Exit)(PVM pVM); /* all */ PGM_SHW_DECL(int, GetPage)(PVM pVM, RTGCPTR GCPtr, uint64_t *pfFlags, PRTHCPHYS pHCPhys); PGM_SHW_DECL(int, ModifyPage)(PVM pVM, RTGCPTR GCPtr, size_t cb, uint64_t fFlags, uint64_t fMask); __END_DECLS /** * Initializes the guest bit of the paging mode data. * * @returns VBox status code. * @param pVM The VM handle. * @param fResolveGCAndR0 Indicate whether or not GC and Ring-0 symbols can be resolved now. * This is used early in the init process to avoid trouble with PDM * not being initialized yet. */ PGM_SHW_DECL(int, InitData)(PVM pVM, PPGMMODEDATA pModeData, bool fResolveGCAndR0) { Assert(pModeData->uShwType == PGM_SHW_TYPE || pModeData->uShwType == PGM_TYPE_NESTED); /* Ring-3 */ pModeData->pfnR3ShwRelocate = PGM_SHW_NAME(Relocate); pModeData->pfnR3ShwExit = PGM_SHW_NAME(Exit); pModeData->pfnR3ShwGetPage = PGM_SHW_NAME(GetPage); pModeData->pfnR3ShwModifyPage = PGM_SHW_NAME(ModifyPage); if (fResolveGCAndR0) { int rc; #if PGM_SHW_TYPE != PGM_TYPE_AMD64 && PGM_SHW_TYPE != PGM_TYPE_NESTED && PGM_SHW_TYPE != PGM_TYPE_EPT /* No AMD64 for traditional virtualization, only VT-x and AMD-V. */ /* GC */ rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_SHW_NAME_RC_STR(GetPage), &pModeData->pfnRCShwGetPage); AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_SHW_NAME_RC_STR(GetPage), rc), rc); rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_SHW_NAME_RC_STR(ModifyPage), &pModeData->pfnRCShwModifyPage); AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_SHW_NAME_RC_STR(ModifyPage), rc), rc); #endif /* Not AMD64 shadow paging. */ /* Ring-0 */ rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_SHW_NAME_R0_STR(GetPage), &pModeData->pfnR0ShwGetPage); AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_SHW_NAME_R0_STR(GetPage), rc), rc); rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_SHW_NAME_R0_STR(ModifyPage), &pModeData->pfnR0ShwModifyPage); AssertMsgRCReturn(rc, ("%s -> rc=%Rrc\n", PGM_SHW_NAME_R0_STR(ModifyPage), rc), rc); } return VINF_SUCCESS; } /** * Enters the shadow mode. * * @returns VBox status code. * @param pVM VM handle. */ PGM_SHW_DECL(int, Enter)(PVM pVM) { #if PGM_SHW_TYPE == PGM_TYPE_NESTED Assert(HWACCMIsNestedPagingActive(pVM)); Log(("Enter nested shadow paging mode: root %RHv phys %RHp\n", pVM->pgm.s.pShwNestedRootR3, pVM->pgm.s.HCPhysShwNestedRoot)); /* In non-nested mode we allocate the PML4 page on-demand; in nested mode we just use our fixed nested paging root. */ pVM->pgm.s.pShwRootR3 = (R3PTRTYPE(void *))pVM->pgm.s.pShwNestedRootR3; # ifndef VBOX_WITH_2X_4GB_ADDR_SPACE pVM->pgm.s.pShwRootR0 = (R0PTRTYPE(void *))pVM->pgm.s.pShwNestedRootR0; # endif pVM->pgm.s.HCPhysShwCR3 = pVM->pgm.s.HCPhysShwNestedRoot; #endif return VINF_SUCCESS; } /** * Relocate any GC pointers related to shadow mode paging. * * @returns VBox status code. * @param pVM The VM handle. * @param offDelta The reloation offset. */ PGM_SHW_DECL(int, Relocate)(PVM pVM, RTGCPTR offDelta) { /* nothing special to do here - InitData does the job. */ return VINF_SUCCESS; } /** * Exits the shadow mode. * * @returns VBox status code. * @param pVM VM handle. */ PGM_SHW_DECL(int, Exit)(PVM pVM) { #if PGM_SHW_TYPE == PGM_TYPE_NESTED Assert(HWACCMIsNestedPagingActive(pVM)); pVM->pgm.s.pShwRootR3 = 0; # ifndef VBOX_WITH_2X_4GB_ADDR_SPACE pVM->pgm.s.pShwRootR0 = 0; # endif pVM->pgm.s.HCPhysShwCR3 = 0; Log(("Leave nested shadow paging mode\n")); #endif return VINF_SUCCESS; }