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target/i386: Make ITS_NO available to guests

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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>
Link: https://lore.kernel.org/r/8c1797e488b42650f62d816f25c58726eb522fad.1745946029.git.pawan.kumar.gupta@linux.intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Pawan Gupta
2025-05-12 10:26:04 -07:00
committed by Paolo Bonzini
parent bbdbc47b5c
commit 74978391b2
1 changed files with 8 additions and 0 deletions
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8
target/i386/cpu.c
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@@ -1383,6 +1383,14 @@ 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,