diff options
| author | Eduardo Habkost <ehabkost@redhat.com> | 2015-11-25 18:19:15 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-11-26 16:48:11 +0100 |
| commit | 2590f15b13cc57487518996b32bb7626b0d80909 (patch) | |
| tree | 2ba9908a8dfde0ef600efa54228c70ce7436ea3c | |
| parent | 49b69cbfcd6e32e2178d6ff7e5d60689c3f79c6e (diff) | |
target-i386: kvm: Use env->mcg_cap when setting up MCE
When setting up MCE, instead of using the MCE_*_DEF macros
directly, just filter the existing env->mcg_cap value.
As env->mcg_cap is already initialized as
MCE_CAP_DEF|MCE_BANKS_DEF at target-i386/cpu.c:mce_init(), this
doesn't change any behavior. But it will allow us to change
mce_init() in the future, to implement different defaults
depending on CPU model, machine-type or command-line parameters.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1448471956-66873-9-git-send-email-pbonzini@redhat.com>
| -rw-r--r-- | target-i386/cpu.h | 2 | ||||
| -rw-r--r-- | target-i386/kvm.c | 11 |
2 files changed, 6 insertions, 7 deletions
diff --git a/target-i386/cpu.h b/target-i386/cpu.h index fc4a605d6a..84edfd0d8a 100644 --- a/target-i386/cpu.h +++ b/target-i386/cpu.h @@ -286,6 +286,8 @@ #define MCE_CAP_DEF (MCG_CTL_P|MCG_SER_P) #define MCE_BANKS_DEF 10 +#define MCG_CAP_BANKS_MASK 0xff + #define MCG_STATUS_RIPV (1ULL<<0) /* restart ip valid */ #define MCG_STATUS_EIPV (1ULL<<1) /* ip points to correct instruction */ #define MCG_STATUS_MCIP (1ULL<<2) /* machine check in progress */ diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 93d1f5eb6b..90bd447bed 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -784,21 +784,18 @@ int kvm_arch_init_vcpu(CPUState *cs) return ret; } - if (banks < MCE_BANKS_DEF) { + if (banks < (env->mcg_cap & MCG_CAP_BANKS_MASK)) { error_report("kvm: Unsupported MCE bank count (QEMU = %d, KVM = %d)", - MCE_BANKS_DEF, banks); + (int)(env->mcg_cap & MCG_CAP_BANKS_MASK), banks); return -ENOTSUP; } - mcg_cap &= MCE_CAP_DEF; - mcg_cap |= MCE_BANKS_DEF; - ret = kvm_vcpu_ioctl(cs, KVM_X86_SETUP_MCE, &mcg_cap); + env->mcg_cap &= mcg_cap | MCG_CAP_BANKS_MASK; + ret = kvm_vcpu_ioctl(cs, KVM_X86_SETUP_MCE, &env->mcg_cap); if (ret < 0) { fprintf(stderr, "KVM_X86_SETUP_MCE: %s", strerror(-ret)); return ret; } - - env->mcg_cap = mcg_cap; } qemu_add_vm_change_state_handler(cpu_update_state, env); |