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[Qemu-devel] [PULL 16/16] target-i386: Enable LMCE for '-cpu host' if su
From: |
Eduardo Habkost |
Subject: |
[Qemu-devel] [PULL 16/16] target-i386: Enable LMCE for '-cpu host' if supported by host |
Date: |
Thu, 7 Jul 2016 16:59:22 -0300 |
From: Haozhong Zhang <address@hidden>
If -cpu host is used, LMCE will be automatically enabled when it's
supported by host.
Signed-off-by: Haozhong Zhang <address@hidden>
Reviewed-by: Eduardo Habkost <address@hidden>
Signed-off-by: Eduardo Habkost <address@hidden>
---
target-i386/cpu.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 5bc7ce5..fc209ee 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1547,6 +1547,17 @@ static uint32_t
x86_cpu_get_supported_feature_word(FeatureWord w,
#ifdef CONFIG_KVM
+static bool lmce_supported(void)
+{
+ uint64_t mce_cap;
+
+ if (kvm_ioctl(kvm_state, KVM_X86_GET_MCE_CAP_SUPPORTED, &mce_cap) < 0) {
+ return false;
+ }
+
+ return !!(mce_cap & MCG_LMCE_P);
+}
+
static int cpu_x86_fill_model_id(char *str)
{
uint32_t eax = 0, ebx = 0, ecx = 0, edx = 0;
@@ -1619,6 +1630,10 @@ static void host_x86_cpu_initfn(Object *obj)
env->cpuid_level = kvm_arch_get_supported_cpuid(s, 0x0, 0, R_EAX);
env->cpuid_xlevel = kvm_arch_get_supported_cpuid(s, 0x80000000, 0,
R_EAX);
env->cpuid_xlevel2 = kvm_arch_get_supported_cpuid(s, 0xC0000000, 0,
R_EAX);
+
+ if (lmce_supported()) {
+ object_property_set_bool(OBJECT(cpu), true, "lmce", &error_abort);
+ }
}
object_property_set_bool(OBJECT(cpu), true, "pmu", &error_abort);
--
2.5.5
- [Qemu-devel] [PULL 06/16] target-sparc: Use sparc_cpu_parse_features() directly, (continued)
- [Qemu-devel] [PULL 06/16] target-sparc: Use sparc_cpu_parse_features() directly, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 07/16] target-i386: TCG can support CPUID.07H:EBX.erms, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 08/16] target-i386: Avoid using locals outside their scope, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 09/16] cpu: Use CPUClass->parse_features() as convertor to global properties, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 11/16] pc: Parse CPU features only once, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 10/16] arm: virt: Parse cpu_model only once, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 15/16] target-i386: Publish advised value of MSR_IA32_FEATURE_CONTROL via fw_cfg, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 12/16] target-i386: Show host and VM TSC frequencies on mismatch, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 13/16] target-i386: Report hyperv feature words through qom, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 14/16] target-i386: kvm: Add basic Intel LMCE support, Eduardo Habkost, 2016/07/07
- [Qemu-devel] [PULL 16/16] target-i386: Enable LMCE for '-cpu host' if supported by host,
Eduardo Habkost <=
- Re: [Qemu-devel] [PULL 00/16] x86 and machine queue, 2016-07-07, Peter Maydell, 2016/07/11