Commit b40be41f37 for qemu.org
commit b40be41f37e15603059e6acd656dd335ca93f696
Author: Jon Kohler <jon@nutanix.com>
Date: Thu Nov 6 10:46:23 2025 -0700
target/i386: introduce GraniteRapids-v5 to expose ITS_NO
Expose ITS_NO by default, as users using Granite Rapids and higher
CPU models would not be able to live migrate to lower CPU hosts due to
missing features. In that case, they would not be vulnerable to ITS.
its-no was originally added on [1], but needs to be exposed on the
individual CPU models for the guests to see by default.
[1] 74978391b2da ("target/i386: Make ITS_NO available to guests")
Cc: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Jon Kohler <jon@nutanix.com>
Link: https://lore.kernel.org/r/20251106174626.49930-4-jon@nutanix.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 81779483d3..987f64c5af 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5443,6 +5443,15 @@ static const X86CPUDefinition builtin_x86_defs[] = {
{ /* end of list */ },
}
},
+ {
+ .version = 5,
+ .note = "with cet-ss, cet-ibt, its-no",
+ .cache_info = &xeon_gnr_cache_info,
+ .props = (PropValue[]) {
+ { "its-no", "on" },
+ { /* end of list */ },
+ }
+ },
{ /* end of list */ },
},
},