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[PATCH] target/i386: Export MSR_ARCH_CAPABILITIES bits to guests
From: |
Pawan Gupta |
Subject: |
[PATCH] target/i386: Export MSR_ARCH_CAPABILITIES bits to guests |
Date: |
Fri, 23 Jun 2023 13:26:25 -0700 |
On Intel CPUs there are certain bits in MSR_ARCH_CAPABILITIES that
indicates if the CPU is not affected by a vulnerability. Without these
bits guests may try to deploy the mitigation even if the CPU is not
affected.
Export the bits to guests that indicate immunity to hardware
vulnerabilities.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
---
target/i386/cpu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 1242bd541a53..66d6062aea7c 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1049,10 +1049,10 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
"rdctl-no", "ibrs-all", "rsba", "skip-l1dfl-vmentry",
"ssb-no", "mds-no", "pschange-mc-no", "tsx-ctrl",
"taa-no", NULL, NULL, NULL,
- NULL, NULL, NULL, NULL,
+ NULL, "sbdr-ssdp-no", "fbsdp-no", "psdp-no",
NULL, "fb-clear", NULL, NULL,
NULL, NULL, NULL, NULL,
- NULL, NULL, NULL, NULL,
+ "pbrsb-no", NULL, NULL, NULL,
NULL, NULL, NULL, NULL,
},
.msr = {
--
2.34.1
- [PATCH] target/i386: Export MSR_ARCH_CAPABILITIES bits to guests,
Pawan Gupta <=