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From: Eduardo Habkost <ehabkost@redhat.com>
To: qemu-devel@nongnu.org
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	kvm@vger.kernel.org, Haozhong Zhang <haozhong.zhang@intel.com>
Subject: [Qemu-devel] [PATCH 1/4] kvm: Simplify invtsc check
Date: Tue, 27 Dec 2016 17:21:17 -0200	[thread overview]
Message-ID: <1482866480-26208-2-git-send-email-ehabkost@redhat.com> (raw)
In-Reply-To: <1482866480-26208-1-git-send-email-ehabkost@redhat.com>

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

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 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

  reply	other threads:[~2016-12-27 19:21 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-12-27 19:21 [Qemu-devel] [PATCH 0/4] Allow migration with invtsc if there's no frequency mismatch Eduardo Habkost
2016-12-27 19:21 ` Eduardo Habkost [this message]
2016-12-29 18:57   ` [Qemu-devel] [PATCH 1/4] kvm: Simplify invtsc check Marcelo Tosatti
2016-12-27 19:21 ` [Qemu-devel] [PATCH 2/4] kvm: Allow invtsc migration if tsc-khz is set explicitly Eduardo Habkost
2017-01-04 11:44   ` Marcelo Tosatti
2017-01-04 11:57     ` Marcelo Tosatti
2017-01-04 13:40     ` Eduardo Habkost
2017-01-04 13:45       ` Marcelo Tosatti
2017-01-04 13:51         ` Eduardo Habkost
2016-12-27 19:21 ` [Qemu-devel] [PATCH 3/4] pc: Add 2.9 machine-types Eduardo Habkost
2016-12-30 13:38   ` Igor Mammedov
2017-01-04 14:01   ` Laszlo Ersek
2017-01-04 14:20     ` Eduardo Habkost
2017-01-04 16:40       ` Laszlo Ersek
2017-01-04 17:46         ` Eduardo Habkost
2016-12-27 19:21 ` [Qemu-devel] [PATCH 4/4] kvm: Allow migration with invtsc Eduardo Habkost
2017-01-04 11:56   ` Marcelo Tosatti
2017-01-04 13:39     ` Eduardo Habkost
2017-01-04 19:59       ` [Qemu-devel] TSC frequency configuration & invtsc migration (was Re: [PATCH 4/4] kvm: Allow migration with invtsc) Eduardo Habkost
2017-01-04 22:26         ` Marcelo Tosatti
2017-01-05  1:36           ` Eduardo Habkost
2017-01-05 10:48             ` Marcelo Tosatti
2017-01-05 10:50               ` Marcelo Tosatti
2017-01-05 12:19               ` Eduardo Habkost
2017-01-05 12:33                 ` [Qemu-devel] [libvirt] " Daniel P. Berrange
2017-01-05 12:48                   ` Eduardo Habkost
2017-01-05 13:00                     ` Daniel P. Berrange
2017-01-05 13:11                       ` Eduardo Habkost
2017-01-10 16:38                       ` Paolo Bonzini
2017-01-06 10:31                 ` [Qemu-devel] " Marcelo Tosatti
2017-01-08 15:49                   ` [Qemu-devel] How to make dest host abort migration safely " Eduardo Habkost
2017-01-09 10:04                     ` Dr. David Alan Gilbert
2017-01-08 20:28                   ` [Qemu-devel] Exporting kvm_max_guest_tsc_khz to userspace " Eduardo Habkost
2017-01-09 14:58                     ` Paolo Bonzini
2017-01-11 13:26                       ` Eduardo Habkost
2017-01-11 14:06                         ` Paolo Bonzini
2017-01-10 16:36               ` [Qemu-devel] TSC frequency configuration & invtsc migration " Paolo Bonzini
2017-01-11 11:58                 ` Eduardo Habkost
2017-01-18 11:55                 ` Marcelo Tosatti
2017-01-18 12:43                   ` Eduardo Habkost

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