From: Glauber de Oliveira Costa <[EMAIL PROTECTED]>
we advertise the presence of our paravirt clock
through cpuid, if it is defined in headers
Signed-off-by: Glauber de Oliveira Costa <[EMAIL PROTECTED]>
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
diff --git a/qemu/qemu-kvm-x86.c b/qemu/qemu-kvm-x86.c
index 49205fc..37354fb 100644
--- a/qemu/qemu-kvm-x86.c
+++ b/qemu/qemu-kvm-x86.c
@@ -520,6 +520,10 @@ int kvm_arch_qemu_init_env(CPUState *cenv)
int cpuid_nent = 0;
CPUState copy;
uint32_t i, limit;
+ int has_clocksource = 0;
+#ifdef KVM_CAP_CLOCKSOURCE
+ has_clocksource = kvm_check_extension(kvm_context, KVM_CAP_CLOCKSOURCE);
+#endif
copy = *cenv;
@@ -537,7 +541,7 @@ int kvm_arch_qemu_init_env(CPUState *cenv)
pv_ent = &cpuid_ent[cpuid_nent++];
memset(pv_ent, 0, sizeof(*pv_ent));
pv_ent->function = KVM_CPUID_FEATURES;
- pv_ent->eax = 0;
+ pv_ent->eax = (has_clocksource << KVM_FEATURE_CLOCKSOURCE);
#endif
copy.regs[R_EAX] = 0;
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