VMM/VMMR0/PGMR0.cpp

	PGMR0.cpp revision 50fdc90dae026b2086f85b0f028aa63dd6bbe14e
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/* $Id$ */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/** @file
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * PGM - Page Manager and Monitor, Ring-0.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Copyright (C) 2007 Sun Microsystems, Inc.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * This file is part of VirtualBox Open Source Edition (OSE), as
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * available from http://www.virtualbox.org. This file is free software;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * you can redistribute it and/or modify it under the terms of the GNU
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * General Public License (GPL) as published by the Free Software
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Foundation, in version 2 as it comes in the "COPYING" file of the
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Clara, CA 95054 USA or visit http://www.sun.com if you need
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * additional information or have any questions.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/*******************************************************************************
17a2b317610f531d565bf4e940433aab2d9e6985Bill Taylor*   Header Files                                                               *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor*******************************************************************************/
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include <VBox/pgm.h>
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include "PGMInternal.h"
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include <VBox/vm.h>
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include <VBox/log.h>
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include <VBox/err.h>
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include <iprt/assert.h>
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor__BEGIN_DECLS
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define PGM_BTH_NAME(name)          PGM_BTH_NAME_32BIT_PROT(name)
de710d24d2fae4468e64da999e1d952a247f142cJosef 'Jeff' Sipek#include "PGMR0Bth.h"
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#undef PGM_BTH_NAME
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define PGM_BTH_NAME(name)          PGM_BTH_NAME_PAE_PROT(name)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include "PGMR0Bth.h"
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#undef PGM_BTH_NAME
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#define PGM_BTH_NAME(name)          PGM_BTH_NAME_AMD64_PROT(name)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#include "PGMR0Bth.h"
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#undef PGM_BTH_NAME
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor__END_DECLS
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/**
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * Worker function for PGMR3PhysAllocateHandyPages and pgmPhysEnsureHandyPage.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @returns The following VBox status codes.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @retval  VINF_SUCCESS on success. FF cleared.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @retval  VINF_EM_NO_MEMORY if we're out of memory. The FF is set in this case.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @param   pVM         The VM handle.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @remarks Must be called from within the PGM critical section.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill TaylorPGMR0DECL(int) PGMR0PhysAllocateHandyPages(PVM pVM)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor{
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    return VERR_NOT_IMPLEMENTED;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor}
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor/**
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * #PF Handler for nested paging.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @returns VBox status code (appropriate for trap handling and GC return).
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @param   pVM                 VM Handle.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @param   enmShwPagingMode    Paging mode for the nested page tables
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @param   uErr                The trap error code.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @param   pRegFrame           Trap register frame.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor * @param   pvFault             The fault address.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill TaylorPGMR0DECL(int) PGMR0Trap0eHandlerNestedPaging(PVM pVM, PGMMODE enmShwPagingMode, RTGCUINT uErr, PCPUMCTXCORE pRegFrame, RTGCPHYS pvFault)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor{
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    int rc;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    LogFlow(("PGMTrap0eHandler: uErr=%#x pvFault=%VGp eip=%VGv\n", uErr, pvFault, pRegFrame->rip));
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    STAM_PROFILE_START(&pVM->pgm.s.StatGCTrap0e, a);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    STAM_STATS({ pVM->pgm.s.CTXSUFF(pStatTrap0eAttribution) = NULL; } );
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    /* AMD uses the host's paging mode; Intel's version is on the todo list */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    AssertMsg(enmShwPagingMode == PGMMODE_32_BIT || enmShwPagingMode == PGMMODE_PAE || enmShwPagingMode == PGMMODE_PAE_NX || enmShwPagingMode == PGMMODE_AMD64 || enmShwPagingMode == PGMMODE_AMD64_NX, ("enmShwPagingMode=%d\n", enmShwPagingMode));
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#ifdef VBOX_WITH_STATISTICS
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    /*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * Error code stats.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (uErr & X86_TRAP_PF_US)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        if (!(uErr & X86_TRAP_PF_P))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            if (uErr & X86_TRAP_PF_RW)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor                STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eUSNotPresentWrite);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            else
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor                STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eUSNotPresentRead);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        else if (uErr & X86_TRAP_PF_RW)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eUSWrite);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        else if (uErr & X86_TRAP_PF_RSVD)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eUSReserved);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        else if (uErr & X86_TRAP_PF_ID)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eUSNXE);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        else
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eUSRead);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    else
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    {   /* Supervisor */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        if (!(uErr & X86_TRAP_PF_P))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            if (uErr & X86_TRAP_PF_RW)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor                STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eSVNotPresentWrite);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            else
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor                STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eSVNotPresentRead);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        else if (uErr & X86_TRAP_PF_RW)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eSVWrite);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        else if (uErr & X86_TRAP_PF_ID)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eSNXE);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        else if (uErr & X86_TRAP_PF_RSVD)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor            STAM_COUNTER_INC(&pVM->pgm.s.StatGCTrap0eSVReserved);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor#endif
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    /*
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * Call the worker.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     *
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * We pretend the guest is in protected mode without paging, so we can use existing code to build the
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     * nested page tables.
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor     */
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    switch(enmShwPagingMode)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    {
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    case PGMMODE_32_BIT:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        rc = PGM_BTH_NAME_32BIT_PROT(Trap0eHandler)(pVM, uErr, pRegFrame, pvFault);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        break;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    case PGMMODE_PAE:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    case PGMMODE_PAE_NX:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        rc = PGM_BTH_NAME_PAE_PROT(Trap0eHandler)(pVM, uErr, pRegFrame, pvFault);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        break;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    case PGMMODE_AMD64:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    case PGMMODE_AMD64_NX:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        rc = PGM_BTH_NAME_AMD64_PROT(Trap0eHandler)(pVM, uErr, pRegFrame, pvFault);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        break;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    default:
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        AssertFailed();
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        break;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    }
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    if (rc == VINF_PGM_SYNCPAGE_MODIFIED_PDE)
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor        rc = VINF_SUCCESS;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    STAM_STATS({ if (!pVM->pgm.s.CTXSUFF(pStatTrap0eAttribution))
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor                    pVM->pgm.s.CTXSUFF(pStatTrap0eAttribution) = &pVM->pgm.s.StatTrap0eMisc; });
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    STAM_PROFILE_STOP_EX(&pVM->pgm.s.StatGCTrap0e, pVM->pgm.s.CTXSUFF(pStatTrap0eAttribution), a);
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor    return rc;
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor}
9e39c5ba00a55fa05777cc94b148296af305e135Bill Taylor