VMM/VMMR3/GIMHv.cpp

	GIMHv.cpp revision 236b2935f217749893b7034e59da3e3568928ace
/* $Id$ */
/** @file
 * GIM - Guest Interface Manager, Hyper-V implementation.
 */

/*
 * Copyright (C) 2014 Oracle Corporation
 *
 * 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.
 */

/*******************************************************************************
*   Header Files                                                               *
*******************************************************************************/
#define LOG_GROUP LOG_GROUP_GIM
#include "GIMHvInternal.h"
#include "GIMInternal.h"

#include <iprt/assert.h>
#include <iprt/err.h>

#include <VBox/vmm/cpum.h>
#include <VBox/vmm/vm.h>
#include <VBox/vmm/hm.h>
#include <VBox/vmm/pdmapi.h>

/*******************************************************************************
*   Defined Constants And Macros                                               *
*******************************************************************************/
#define GIMHV_HYPERCALL                 "GIMHvHypercall"


VMMR3_INT_DECL(int) GIMR3HvInit(PVM pVM)
{
    AssertReturn(pVM, VERR_INVALID_PARAMETER);
    AssertReturn(pVM->gim.s.enmProvider == GIMPROVIDER_HYPERV, VERR_INTERNAL_ERROR_5);

    int rc;
    pVM->gim.s.pfnHypercallR3 = &GIMHvHypercall;
    if (!HMIsEnabled(pVM))
    {
        rc = PDMR3LdrGetSymbolRC(pVM, NULL /* pszModule */, GIMHV_HYPERCALL, &pVM->gim.s.pfnHypercallRC);
        AssertRCReturn(rc, rc);
    }
    rc = PDMR3LdrGetSymbolR0(pVM, NULL /* pszModule */, GIMHV_HYPERCALL, &pVM->gim.s.pfnHypercallR0);
    AssertRCReturn(rc, rc);

    /*
     * Expose HVP (Hypervisor Present) bit to the guest.
     */
    CPUMSetGuestCpuIdFeature(pVM, CPUMCPUIDFEATURE_HVP);

    /** @todo Register CPUID leaves, MSR ranges with CPUM. */
    return VINF_SUCCESS;
}


VMMR3_INT_DECL(void) GIMR3HvRelocate(PVM pVM, RTGCINTPTR offDelta)
{
    int rc = PDMR3LdrGetSymbolRC(pVM, NULL /* pszModule */, GIMHV_HYPERCALL, &pVM->gim.s.pfnHypercallRC);
    AssertFatalRC(rc);
}