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kvm: x86: Fail kvm_arch_init_vcpu if MCE initialization fails 

There is no reason to continue if the kernel claims to support MCE but
then fails to process our request.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
CC: Huang Ying <ying.huang@intel.com>
CC: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
CC: Jin Dongming <jin.dongming@np.css.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Jan Kiszka 2011-03-02 08:56:18 +01:00 committed by Marcelo Tosatti
parent 32a420243c
commit 75d4949733
1 changed files with 17 additions and 13 deletions
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30
target-i386/kvm.c
View File

@ -437,20 +437,24 @@ int kvm_arch_init_vcpu(CPUState *env)
int banks;
int ret;
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;
ret = kvm_vcpu_ioctl(env, KVM_X86_SETUP_MCE, &mcg_cap);
if (ret < 0) {
fprintf(stderr, "KVM_X86_SETUP_MCE: %s", strerror(-ret));
} else {
env->mcg_cap = mcg_cap;
}
ret = kvm_get_mce_cap_supported(env->kvm_state, &mcg_cap, &banks);
if (ret < 0) {
fprintf(stderr, "kvm_get_mce_cap_supported: %s", strerror(-ret));
return ret;
}
if (banks > MCE_BANKS_DEF) {
banks = MCE_BANKS_DEF;
}
mcg_cap &= MCE_CAP_DEF;
mcg_cap |= banks;
ret = kvm_vcpu_ioctl(env, KVM_X86_SETUP_MCE, &mcg_cap);
if (ret < 0) {
fprintf(stderr, "KVM_X86_SETUP_MCE: %s", strerror(-ret));
return ret;
}
env->mcg_cap = mcg_cap;
}
#endif