35 lines
1.4 KiB
Diff
35 lines
1.4 KiB
Diff
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From: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
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Date: Mon, 18 Nov 2019 23:23:27 -0800
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Subject: target/i386: Export TAA_NO bit to guests
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Git-commit: 7fac38635e1cc5ebae34eb6530da1009bd5808e4
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Reference: bsc#1152506 CVE-2019-11135
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TSX Async Abort (TAA) is a side channel attack on internal buffers in
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some Intel processors similar to Microachitectural Data Sampling (MDS).
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Some future Intel processors will use the ARCH_CAP_TAA_NO bit in the
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IA32_ARCH_CAPABILITIES MSR to report that they are not vulnerable to
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TAA. Make this bit available to guests.
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Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
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Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Signed-off-by: Bruce Rogers <brogers@suse.com>
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---
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target/i386/cpu.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/target/i386/cpu.c b/target/i386/cpu.c
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index 5191367f89ee4d1131c4309633de..530942baed87c5ff76beaf36df14 100644
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--- a/target/i386/cpu.c
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+++ b/target/i386/cpu.c
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@@ -1189,7 +1189,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
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.feat_names = {
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"rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry",
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"ssb-no", "mds-no", "pschange-mc-no", NULL,
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- NULL, NULL, NULL, NULL,
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+ "taa-no", NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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NULL, NULL, NULL, NULL,
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