PGMBth.h revision cd5b165f191e9fc1dedf135e860cef7a793f296c
/* $Id$ */
/** @file
* VBox - Page Manager / Monitor, Shadow+Guest 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;
* 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.
*/
/*******************************************************************************
* Internal Functions *
*******************************************************************************/
PGM_BTH_DECL(int, SyncPage)(PVM pVM, X86PDE PdeSrc, RTGCPTR GCPtrPage, unsigned cPages, unsigned uError);
PGM_BTH_DECL(unsigned, AssertCR3)(PVM pVM, uint64_t cr3, uint64_t cr4, RTGCPTR GCPtr = 0, RTGCPTR cb = ~(RTGCPTR)0);
/**
* Initializes the both 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.
*/
{
/* Ring 3 */
#ifdef VBOX_STRICT
#endif
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_BTH_NAME_RC_STR(Trap0eHandler), &pModeData->pfnRCBthTrap0eHandler);
rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(InvalidatePage), &pModeData->pfnRCBthInvalidatePage);
rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(PrefetchPage), &pModeData->pfnRCBthPrefetchPage);
rc = PDMR3LdrGetSymbolRC(pVM, NULL, PGM_BTH_NAME_RC_STR(VerifyAccessSyncPage),&pModeData->pfnRCBthVerifyAccessSyncPage);
# ifdef VBOX_STRICT
# endif
#endif /* Not AMD64 shadow paging. */
/* Ring 0 */
rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(Trap0eHandler), &pModeData->pfnR0BthTrap0eHandler);
rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(InvalidatePage), &pModeData->pfnR0BthInvalidatePage);
rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(PrefetchPage), &pModeData->pfnR0BthPrefetchPage);
rc = PDMR3LdrGetSymbolR0(pVM, NULL, PGM_BTH_NAME_R0_STR(VerifyAccessSyncPage),&pModeData->pfnR0BthVerifyAccessSyncPage);
#ifdef VBOX_STRICT
#endif
}
return VINF_SUCCESS;
}
/**
* Enters the shadow+guest mode.
*
* @returns VBox status code.
* @param pVM VM handle.
* @param GCPhysCR3 The physical address from the CR3 register.
*/
{
/* Here we deal with allocation of the root shadow page table for real and protected mode during mode switches;
*/
# if ( ( PGM_SHW_TYPE == PGM_TYPE_32BITS \
|| PGM_SHW_TYPE == PGM_TYPE_PAE \
|| PGM_SHW_TYPE == PGM_TYPE_AMD64) \
&& ( PGM_GST_TYPE == PGM_TYPE_REAL \
|| PGM_GST_TYPE == PGM_TYPE_PROT))
/* We only need shadow paging in real and protected mode for VT-x and AMD-V (excluding nested paging/EPT modes) */
if (HWACCMR3IsActive(pVM))
{
/* Free the previous root mapping if still active. */
{
/* It might have been freed already by a pool flush (see e.g. PGMR3MappingsUnfix). */
/** @todo Coordinate this better with the pool. */
pgmPoolFreeByPage(pPool, pVM->pgm.s.CTX_SUFF(pShwPageCR3), pVM->pgm.s.CTX_SUFF(pShwPageCR3)->iUser, pVM->pgm.s.CTX_SUFF(pShwPageCR3)->iUserTable);
# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
# endif
}
/* contruct a fake address */
# if PGM_GST_TYPE == PGM_TYPE_REAL
# else
# endif
int rc = pgmPoolAlloc(pVM, GCPhysCR3, BTH_PGMPOOLKIND_ROOT, SHW_POOL_ROOT_IDX, GCPhysCR3 >> PAGE_SHIFT, &pVM->pgm.s.CTX_SUFF(pShwPageCR3));
if (rc == VERR_PGM_POOL_FLUSHED)
{
Log(("Bth-Enter: PGM pool flushed -> signal sync cr3\n"));
return VINF_PGM_SYNC_CR3;
}
# ifdef IN_RING0
# else
# endif
# ifndef VBOX_WITH_2X_4GB_ADDR_SPACE
pVM->pgm.s.pShwRootR0 = (R0PTRTYPE(void *))PGMPOOL_PAGE_2_PTR(pPool->CTX_SUFF(pVM), pVM->pgm.s.CTX_SUFF(pShwPageCR3));
# endif
}
# endif
#else
/* nothing special to do here - InitData does the job. */
#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.
*/
{
/* nothing special to do here - InitData does the job. */
return VINF_SUCCESS;
}