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kvm: x86: add mce support 

Port qemu-kvm's MCE support

commit c68b2374c9048812f488e00ffb95db66c0bc07a7
Author: Huang Ying <ying.huang@intel.com>
Date:   Mon Jul 20 10:00:53 2009 +0800

    Add MCE simulation support to qemu/kvm

    KVM ioctls are used to initialize MCE simulation and inject MCE. The
    real MCE simulation is implemented in Linux kernel. The Kernel part
    has been merged.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Marcelo Tosatti 2010-10-11 15:31:18 -03:00 committed by Anthony Liguori
parent a8486bc9c9
commit e7701825e1
3 changed files with 111 additions and 0 deletions
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6
target-i386/helper.c
View File

@ -27,6 +27,7 @@
#include "exec-all.h"
#include "qemu-common.h"
#include "kvm.h"
#include "kvm_x86.h"
//#define DEBUG_MMU
@ -1030,6 +1031,11 @@ void cpu_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
if (bank >= bank_num || !(status & MCI_STATUS_VAL))
return;
if (kvm_enabled()) {
kvm_inject_x86_mce(cenv, bank, status, mcg_status, addr, misc);
return;
}
/*
* if MSR_MCG_CTL is not all 1s, the uncorrected error
* reporting is disabled

84
target-i386/kvm.c
View File

@ -27,6 +27,7 @@
#include "hw/pc.h"
#include "hw/apic.h"
#include "ioport.h"
#include "kvm_x86.h"
#ifdef CONFIG_KVM_PARA
#include <linux/kvm_para.h>
@ -167,6 +168,67 @@ static int get_para_features(CPUState *env)
}
#endif
#ifdef KVM_CAP_MCE
static int kvm_get_mce_cap_supported(KVMState *s, uint64_t *mce_cap,
int *max_banks)
{
int r;
r = kvm_ioctl(s, KVM_CHECK_EXTENSION, KVM_CAP_MCE);
if (r > 0) {
*max_banks = r;
return kvm_ioctl(s, KVM_X86_GET_MCE_CAP_SUPPORTED, mce_cap);
}
return -ENOSYS;
}
static int kvm_setup_mce(CPUState *env, uint64_t *mcg_cap)
{
return kvm_vcpu_ioctl(env, KVM_X86_SETUP_MCE, mcg_cap);
}
static int kvm_set_mce(CPUState *env, struct kvm_x86_mce *m)
{
return kvm_vcpu_ioctl(env, KVM_X86_SET_MCE, m);
}
struct kvm_x86_mce_data
{
CPUState *env;
struct kvm_x86_mce *mce;
};
static void kvm_do_inject_x86_mce(void *_data)
{
struct kvm_x86_mce_data *data = _data;
int r;
r = kvm_set_mce(data->env, data->mce);
if (r < 0)
perror("kvm_set_mce FAILED");
}
#endif
void kvm_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
uint64_t mcg_status, uint64_t addr, uint64_t misc)
{
#ifdef KVM_CAP_MCE
struct kvm_x86_mce mce = {
.bank = bank,
.status = status,
.mcg_status = mcg_status,
.addr = addr,
.misc = misc,
};
struct kvm_x86_mce_data data = {
.env = cenv,
.mce = &mce,
};
run_on_cpu(cenv, kvm_do_inject_x86_mce, &data);
#endif
}
int kvm_arch_init_vcpu(CPUState *env)
{
struct {
@ -277,6 +339,28 @@ int kvm_arch_init_vcpu(CPUState *env)
cpuid_data.cpuid.nent = cpuid_i;
#ifdef KVM_CAP_MCE
if (((env->cpuid_version >> 8)&0xF) >= 6
&& (env->cpuid_features&(CPUID_MCE|CPUID_MCA)) == (CPUID_MCE|CPUID_MCA)
&& kvm_check_extension(env->kvm_state, KVM_CAP_MCE) > 0) {
uint64_t mcg_cap;
int banks;
if (kvm_get_mce_cap_supported(env->kvm_state, &mcg_cap, &banks))
perror("kvm_get_mce_cap_supported FAILED");
else {
if (banks > MCE_BANKS_DEF)
banks = MCE_BANKS_DEF;
mcg_cap &= MCE_CAP_DEF;
mcg_cap |= banks;
if (kvm_setup_mce(env, &mcg_cap))
perror("kvm_setup_mce FAILED");
else
env->mcg_cap = mcg_cap;
}
}
#endif
return kvm_vcpu_ioctl(env, KVM_SET_CPUID2, &cpuid_data);
}

21
target-i386/kvm_x86.h Normal file
View File

@ -0,0 +1,21 @@
/*
* QEMU KVM support
*
* Copyright (C) 2009 Red Hat Inc.
* Copyright IBM, Corp. 2008
*
* Authors:
* Anthony Liguori <aliguori@us.ibm.com>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef __KVM_X86_H__
#define __KVM_X86_H__
void kvm_inject_x86_mce(CPUState *cenv, int bank, uint64_t status,
uint64_t mcg_status, uint64_t addr, uint64_t misc);
#endif