[Xen-devel] [PATCH v9 10/11] x86/cpuid: Offer Indirect Branch Controls to guests

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

With all infrastructure in place, it is now safe to let guests see and use
these features.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
---
v9:
 * Split patch in half with the libxc hunk moving earlier, and rebasing over
   the changed nature of STIBP
---
 xen/include/public/arch-x86/cpufeatureset.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/xen/include/public/arch-x86/cpufeatureset.h 
b/xen/include/public/arch-x86/cpufeatureset.h
index 0f21fed..fa81af1 100644
--- a/xen/include/public/arch-x86/cpufeatureset.h
+++ b/xen/include/public/arch-x86/cpufeatureset.h
@@ -237,13 +237,13 @@ XEN_CPUFEATURE(EFRO,          7*32+10) /*   APERF/MPERF 
Read Only interface */
 
 /* AMD-defined CPU features, CPUID level 0x80000008.ebx, word 8 */
 XEN_CPUFEATURE(CLZERO,        8*32+ 0) /*A  CLZERO instruction */
-XEN_CPUFEATURE(IBPB,          8*32+12) /*   IBPB support only (no IBRS, used 
by AMD) */
+XEN_CPUFEATURE(IBPB,          8*32+12) /*A  IBPB support only (no IBRS, used 
by AMD) */
 
 /* Intel-defined CPU features, CPUID level 0x00000007:0.edx, word 9 */
 XEN_CPUFEATURE(AVX512_4VNNIW, 9*32+ 2) /*A  AVX512 Neural Network Instructions 
*/
 XEN_CPUFEATURE(AVX512_4FMAPS, 9*32+ 3) /*A  AVX512 Multiply Accumulation 
Single Precision */
-XEN_CPUFEATURE(IBRSB,         9*32+26) /*   IBRS and IBPB support (used by 
Intel) */
-XEN_CPUFEATURE(STIBP,         9*32+27) /*!  STIBP */
+XEN_CPUFEATURE(IBRSB,         9*32+26) /*A  IBRS and IBPB support (used by 
Intel) */
+XEN_CPUFEATURE(STIBP,         9*32+27) /*A! STIBP */
 
 #endif /* XEN_CPUFEATURE */
 
-- 
2.1.4


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