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[Qemu-devel] [PATCH 1/4] kvm: Simplify invtsc check


From: Eduardo Habkost
Subject: [Qemu-devel] [PATCH 1/4] kvm: Simplify invtsc check
Date: Tue, 27 Dec 2016 17:21:17 -0200

Instead of searching the table we have just built, we can check
the env->features field directly.

Signed-off-by: Eduardo Habkost <address@hidden>
---
 target/i386/kvm.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index 10a9cd8..a26290f 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -962,8 +962,8 @@ int kvm_arch_init_vcpu(CPUState *cs)
         has_msr_mcg_ext_ctl = has_msr_feature_control = true;
     }
 
-    c = cpuid_find_entry(&cpuid_data.cpuid, 0x80000007, 0);
-    if (c && (c->edx & 1<<8) && invtsc_mig_blocker == NULL) {
+    if ((env->features[FEAT_8000_0007_EDX] & CPUID_APM_INVTSC) &&
+        invtsc_mig_blocker == NULL) {
         /* for migration */
         error_setg(&invtsc_mig_blocker,
                    "State blocked by non-migratable CPU device"
-- 
2.7.4




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