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target/i386: Export TAA_NO bit to guests

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TSX Async Abort (TAA) is a side channel attack on internal buffers in
some Intel processors similar to Microachitectural Data Sampling (MDS).

Some future Intel processors will use the ARCH_CAP_TAA_NO bit in the
IA32_ARCH_CAPABILITIES MSR to report that they are not vulnerable to
TAA. Make this bit available to guests.

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Pawan Gupta 2019-11-18 23:23:27 -08:00 committed by Paolo Bonzini
parent 7f7a585d5b
commit 7fac38635e
1 changed files with 1 additions and 1 deletions
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2
target/i386/cpu.c
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@ -1205,7 +1205,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
.feat_names = {
"rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry",
"ssb-no", "mds-no", "pschange-mc-no", NULL,
NULL, NULL, NULL, NULL,
"taa-no", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,