PGMShw.h revision f2e5ce7cd98acbb39c6497af057ec3e1a50058e4
/* $Id$ */
/** @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_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_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
#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
# define SHW_POOL_ROOT_IDX PGMPOOL_IDX_PAE_PD
#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.HCPhysNestedRoot));
/* 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.pShwPaePml4R3 = (R3PTRTYPE(PX86PML4))pVM->pgm.s.pShwNestedRootR3;
# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
pVM->pgm.s.pShwPaePml4R0 = (R0PTRTYPE(PX86PML4))pVM->pgm.s.pShwNestedRootR0;
# endif
pVM->pgm.s.HCPhysPaePML4 = pVM->pgm.s.HCPhysNestedRoot;
#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.pShwPaePml4R3 = 0;
# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
pVM->pgm.s.pShwPaePml4R0 = 0;
# endif
pVM->pgm.s.HCPhysPaePML4 = 0;
Log(("Leave nested shadow paging mode\n"));
#endif
return VINF_SUCCESS;
}