diff mbox series

[PULL,3/3] target/i386: add MDS-NO feature

Message ID 20190521185059.28236-4-ehabkost@redhat.com (mailing list archive)
State New, archived
Headers show
Series [PULL,1/3] target/i386: define md-clear bit | expand

Commit Message

Eduardo Habkost May 21, 2019, 6:50 p.m. UTC 
From: Paolo Bonzini <pbonzini@redhat.com>

Microarchitectural Data Sampling is a hardware vulnerability which allows
unprivileged speculative access to data which is available in various CPU
internal buffers.

Some Intel processors use the ARCH_CAP_MDS_NO bit in the
IA32_ARCH_CAPABILITIES
MSR to report that they are not vulnerable, make it available to guests.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20190516185320.28340-1-pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
 target/i386/cpu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 953d78b062..2f151dad8c 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1184,7 +1184,7 @@  static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
         .type = MSR_FEATURE_WORD,
         .feat_names = {
             "rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry",
-            "ssb-no", NULL, NULL, NULL,
+            "ssb-no", "mds-no", NULL, NULL,
             NULL, NULL, NULL, NULL,
             NULL, NULL, NULL, NULL,
             NULL, NULL, NULL, NULL,