* [PATCH] target/i386: Make ITS_NO available to guests
@ 2025-05-12 17:26 Pawan Gupta
2025-05-12 19:02 ` Paolo Bonzini
0 siblings, 1 reply; 2+ messages in thread
From: Pawan Gupta @ 2025-05-12 17:26 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: qemu-devel, Chao Gao
When a system is not affected by Indirect Target Selection (ITS)
vulnerability, VMMs set ITS_NO bit in MSR IA32_ARCH_CAPABILITIES to let the
guest know that it is not affected.
Make it available to guests.
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
---
target/i386/cpu.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 1b64ceaaba46..89807ee1aace 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1370,6 +1370,14 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
"bhi-no", NULL, NULL, NULL,
"pbrsb-no", NULL, "gds-no", "rfds-no",
"rfds-clear", NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL,
+ NULL, NULL, NULL, NULL,
+ NULL, NULL, "its-no", NULL,
},
.msr = {
.index = MSR_IA32_ARCH_CAPABILITIES,
base-commit: 56c6e249b6988c1b6edc2dd34ebb0f1e570a1365
--
2.34.1
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2025-05-12 19:02 ` Paolo Bonzini
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