diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-07-07 16:13:13 +0200 |
|---|---|---|
| committer | Marcelo Tosatti <mtosatti@redhat.com> | 2011-08-05 12:04:27 -0300 |
| commit | e7429073ed1a765180158622463e8e0fb1b296d7 (patch) | |
| tree | 8282958da2216d7844683a7f455eacf307bdbd74 /target-i386/kvm.c | |
| parent | b862d1fe42363e79368ed93584fb5938b75a5ffa (diff) | |
qemu-x86: Set tsc_khz in kvm when supported
Make use of the KVM_TSC_CONTROL feature if available.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'target-i386/kvm.c')
| -rw-r--r-- | target-i386/kvm.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 10fb2c4b07..923d2d511d 100644 --- a/target-i386/kvm.c +++ b/target-i386/kvm.c @@ -354,6 +354,7 @@ int kvm_arch_init_vcpu(CPUState *env) uint32_t unused; struct kvm_cpuid_entry2 *c; uint32_t signature[3]; + int r; env->cpuid_features &= kvm_arch_get_supported_cpuid(s, 1, 0, R_EDX); @@ -499,7 +500,22 @@ int kvm_arch_init_vcpu(CPUState *env) qemu_add_vm_change_state_handler(cpu_update_state, env); - return kvm_vcpu_ioctl(env, KVM_SET_CPUID2, &cpuid_data); + r = kvm_vcpu_ioctl(env, KVM_SET_CPUID2, &cpuid_data); + if (r) + return r; + +#ifdef KVM_CAP_TSC_CONTROL + r = kvm_check_extension(env->kvm_state, KVM_CAP_TSC_CONTROL); + if (r && env->tsc_khz) { + r = kvm_vcpu_ioctl(env, KVM_SET_TSC_KHZ, env->tsc_khz); + if (r < 0) { + fprintf(stderr, "KVM_SET_TSC_KHZ failed\n"); + return r; + } + } +#endif + + return 0; } void kvm_arch_reset_vcpu(CPUState *env) |