diff mbox series

[v1,3/3] i386: Mark the 'INTEL_PT' CPUID bit as unmigratable

Message ID 1582580312-19864-4-git-send-email-luwei.kang@intel.com (mailing list archive)
State New, archived
Headers show
Series Remove the limitation of Intel PT CPUID info | expand

Commit Message

Luwei Kang Feb. 24, 2020, 9:38 p.m. UTC 
After expose all the capabilities of Intel PT to KVM guest, the guest Intel
PT CPUID information may difference with same guest cpu model on differnt
hardware. It will block the live migration. This patch will mark the Intel
PT feature as unmigratable.

Signed-off-by: Luwei Kang <luwei.kang@intel.com>
---
 target/i386/cpu.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 4d9e203..caee8b1 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1024,6 +1024,7 @@  static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
             .reg = R_EBX,
         },
         .tcg_features = TCG_7_0_EBX_FEATURES,
+        .unmigratable_flags = CPUID_7_0_EBX_INTEL_PT,
     },
     [FEAT_7_0_ECX] = {
         .type = CPUID_FEATURE_WORD,