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[PATCH] target/i386: Export TAA_NO bit to guests
From: |
Pawan Gupta |
Subject: |
[PATCH] target/i386: Export TAA_NO bit to guests |
Date: |
Mon, 18 Nov 2019 23:23:27 -0800 |
User-agent: |
Mutt/1.12.1 (2019-06-15) |
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 <address@hidden>
---
target/i386/cpu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index a624163ac2cd..af84b04951cf 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -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", NULL, NULL,
- NULL, NULL, NULL, NULL,
+ "taa-no", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
--
2.21.0
- [PATCH] target/i386: Export TAA_NO bit to guests,
Pawan Gupta <=