HWACCMAll.cpp revision fab9a17099dce8d14fd8d50b547ad4eea377a4dc
/* $Id$ */
/** @file
* HWACCM - All contexts.
*/
/*
* 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.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP LOG_GROUP_HWACCM
#include <VBox/hwaccm.h>
#include "HWACCMInternal.h"
#include <VBox/vm.h>
#include <VBox/x86.h>
#include <VBox/hwacc_vmx.h>
#include <VBox/hwacc_svm.h>
#include <VBox/pgm.h>
#include <VBox/pdm.h>
#include <VBox/err.h>
#include <VBox/log.h>
#include <VBox/selm.h>
#include <VBox/iom.h>
#include <iprt/param.h>
#include <iprt/assert.h>
#include <iprt/asm.h>
#include <iprt/string.h>
#include <iprt/memobj.h>
#include <iprt/cpuset.h>
/**
* Invalidates a guest page
*
* @returns VBox status code.
* @param pVM The VM to operate on.
* @param GCVirt Page to invalidate
*/
HWACCMDECL(int) HWACCMInvalidatePage(PVM pVM, RTGCPTR GCVirt)
{
/* @todo Intel for nested paging */
#ifdef IN_RING0
if (pVM->hwaccm.s.svm.fSupported)
return SVMR0InvalidatePage(pVM, GCVirt);
#endif
return VINF_SUCCESS;
}
/**
* Flushes the guest TLB
*
* @returns VBox status code.
* @param pVM The VM to operate on.
*/
HWACCMDECL(int) HWACCMFlushTLB(PVM pVM)
{
/* @todo Intel for nested paging */
if (pVM->hwaccm.s.svm.fSupported)
{
pVM->hwaccm.s.svm.fForceTLBFlush = true;
STAM_COUNTER_INC(&pVM->hwaccm.s.StatFlushTLBManual);
}
return VINF_SUCCESS;
}
/**
* Checks if nested paging is enabled
*
* @returns boolean
* @param pVM The VM to operate on.
*/
HWACCMDECL(bool) HWACCMIsNestedPagingActive(PVM pVM)
{
return HWACCMIsEnabled(pVM) && pVM->hwaccm.s.fNestedPaging;
}
/**
* Return the shadow paging mode for nested paging/ept
*
* @returns shadow paging mode
* @param pVM The VM to operate on.
*/
HWACCMDECL(PGMMODE) HWACCMGetPagingMode(PVM pVM)
{
Assert(HWACCMIsNestedPagingActive(pVM));
if (pVM->hwaccm.s.svm.fSupported)
return PGMMODE_NESTED;
Assert(pVM->hwaccm.s.vmx.fSupported);
return PGMMODE_EPT;
}
/**
* Invalidates a guest page by physical address
*
* NOTE: Assumes the current instruction references this physical page though a virtual address!!
*
* @returns VBox status code.
* @param pVM The VM to operate on.
* @param GCPhys Page to invalidate
*/
HWACCMDECL(int) HWACCMInvalidatePhysPage(PVM pVM, RTGCPHYS GCPhys)
{
if (!HWACCMIsNestedPagingActive(pVM))
return VINF_SUCCESS;
#ifdef IN_RING0
/* @todo Intel for nested paging */
if (pVM->hwaccm.s.svm.fSupported)
{
SVMR0InvalidatePhysPage(pVM, GCPhys);
}
#else
HWACCMFlushTLB(pVM);
#endif
return VINF_SUCCESS;
}