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authorLadi Prosek <lprosek@redhat.com>2017-08-07 10:57:01 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2017-09-19 14:09:33 +0200
commitddb98b5a9ff27b21100da1d701ddf5da34c66673 (patch)
treebd2cc1da1641e646eedc08435f4bb1547ccf4b10 /target
parent1d268dece4991915c0dd0f882248cbcb22ae8ffc (diff)
i386/kvm: set tsc_khz before configuring Hyper-V CPUID
Timing-related Hyper-V enlightenments will benefit from knowing the final tsc_khz value. This commit just moves the code in preparation for further changes. Signed-off-by: Ladi Prosek <lprosek@redhat.com> Message-Id: <20170807085703.32267-3-lprosek@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'target')
-rw-r--r--target/i386/kvm.c38
1 files changed, 19 insertions, 19 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index b14a0db7f3..15d56ae3f8 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -695,6 +695,25 @@ int kvm_arch_init_vcpu(CPUState *cs)
cpuid_i = 0;
+ r = kvm_arch_set_tsc_khz(cs);
+ if (r < 0) {
+ goto fail;
+ }
+
+ /* vcpu's TSC frequency is either specified by user, or following
+ * the value used by KVM if the former is not present. In the
+ * latter case, we query it from KVM and record in env->tsc_khz,
+ * so that vcpu's TSC frequency can be migrated later via this field.
+ */
+ if (!env->tsc_khz) {
+ r = kvm_check_extension(cs->kvm_state, KVM_CAP_GET_TSC_KHZ) ?
+ kvm_vcpu_ioctl(cs, KVM_GET_TSC_KHZ) :
+ -ENOTSUP;
+ if (r > 0) {
+ env->tsc_khz = r;
+ }
+ }
+
/* Paravirtualization CPUIDs */
if (hyperv_enabled(cpu)) {
c = &cpuid_data.entries[cpuid_i++];
@@ -961,25 +980,6 @@ int kvm_arch_init_vcpu(CPUState *cs)
}
}
- r = kvm_arch_set_tsc_khz(cs);
- if (r < 0) {
- goto fail;
- }
-
- /* vcpu's TSC frequency is either specified by user, or following
- * the value used by KVM if the former is not present. In the
- * latter case, we query it from KVM and record in env->tsc_khz,
- * so that vcpu's TSC frequency can be migrated later via this field.
- */
- if (!env->tsc_khz) {
- r = kvm_check_extension(cs->kvm_state, KVM_CAP_GET_TSC_KHZ) ?
- kvm_vcpu_ioctl(cs, KVM_GET_TSC_KHZ) :
- -ENOTSUP;
- if (r > 0) {
- env->tsc_khz = r;
- }
- }
-
if (cpu->vmware_cpuid_freq
/* Guests depend on 0x40000000 to detect this feature, so only expose
* it if KVM exposes leaf 0x40000000. (Conflicts with Hyper-V) */