Commit
d98f26073beb ("target/i386: kvm: add VMX migration blocker")
added a migration blocker for vCPU exposed with Intel VMX.
However, migration should also be blocked for vCPU exposed with
AMD SVM.
Both cases should be blocked because QEMU should extract additional
vCPU state from KVM that should be migrated as part of vCPU VMState.
E.g. Whether vCPU is running in guest-mode or host-mode.
Fixes: d98f26073beb ("target/i386: kvm: add VMX migration blocker")
Reviewed-by: Maran Wilson <maran.wilson@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Message-Id: <
20190619162140.133674-6-liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
return rv;
}
-#define IS_INTEL_CPU(env) ((env)->cpuid_vendor1 == CPUID_VENDOR_INTEL_1 && \
- (env)->cpuid_vendor2 == CPUID_VENDOR_INTEL_2 && \
- (env)->cpuid_vendor3 == CPUID_VENDOR_INTEL_3)
-#define IS_AMD_CPU(env) ((env)->cpuid_vendor1 == CPUID_VENDOR_AMD_1 && \
- (env)->cpuid_vendor2 == CPUID_VENDOR_AMD_2 && \
- (env)->cpuid_vendor3 == CPUID_VENDOR_AMD_3)
static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
{
CPUState *cs = CPU(dev);
#define CPUID_VENDOR_HYGON "HygonGenuine"
+#define IS_INTEL_CPU(env) ((env)->cpuid_vendor1 == CPUID_VENDOR_INTEL_1 && \
+ (env)->cpuid_vendor2 == CPUID_VENDOR_INTEL_2 && \
+ (env)->cpuid_vendor3 == CPUID_VENDOR_INTEL_3)
+#define IS_AMD_CPU(env) ((env)->cpuid_vendor1 == CPUID_VENDOR_AMD_1 && \
+ (env)->cpuid_vendor2 == CPUID_VENDOR_AMD_2 && \
+ (env)->cpuid_vendor3 == CPUID_VENDOR_AMD_3)
+
#define CPUID_MWAIT_IBE (1U << 1) /* Interrupts can exit capability */
#define CPUID_MWAIT_EMX (1U << 0) /* enumeration supported */
}
}
+static inline bool cpu_has_vmx(CPUX86State *env)
+{
+ return env->features[FEAT_1_ECX] & CPUID_EXT_VMX;
+}
+
/* fpu_helper.c */
void update_fp_status(CPUX86State *env);
void update_mxcsr_status(CPUX86State *env);
}
static Error *invtsc_mig_blocker;
-static Error *vmx_mig_blocker;
+static Error *nested_virt_mig_blocker;
#define KVM_MAX_CPUID_ENTRIES 100
!!(c->ecx & CPUID_EXT_SMX);
}
- if ((env->features[FEAT_1_ECX] & CPUID_EXT_VMX) && !vmx_mig_blocker) {
- error_setg(&vmx_mig_blocker,
- "Nested VMX virtualization does not support live migration yet");
- r = migrate_add_blocker(vmx_mig_blocker, &local_err);
+ if (cpu_has_nested_virt(env) && !nested_virt_mig_blocker) {
+ error_setg(&nested_virt_mig_blocker,
+ "Nested virtualization does not support live migration yet");
+ r = migrate_add_blocker(nested_virt_mig_blocker, &local_err);
if (local_err) {
error_report_err(local_err);
- error_free(vmx_mig_blocker);
+ error_free(nested_virt_mig_blocker);
return r;
}
}
fail:
migrate_del_blocker(invtsc_mig_blocker);
fail2:
- migrate_del_blocker(vmx_mig_blocker);
+ migrate_del_blocker(nested_virt_mig_blocker);
return r;
}