| Message ID | e7429073ed1a765180158622463e8e0fb1b296d7.1312577731.git.mtosatti@redhat.com |
|---|---|
| State | New |
| Headers | show |
On 2011-08-05 22:55, Marcelo Tosatti wrote: > From: Joerg Roedel <joerg.roedel@amd.com> > > 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> > --- > 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 10fb2c4..923d2d5 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; Coding style... Jan
diff --git a/target-i386/kvm.c b/target-i386/kvm.c index 10fb2c4..923d2d5 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)