[xen master] x86/cpuid: enumerate and expose PREFETCHIT{0,1}

[patchbot@xxxxxxx]

commit 843265ad0be5f1a15db858501dc4a5ea0d696f0f
Author:     Jan Beulich <jbeulich@xxxxxxxx>
AuthorDate: Thu Nov 23 10:04:07 2023 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Thu Nov 23 10:04:07 2023 +0100

    x86/cpuid: enumerate and expose PREFETCHIT{0,1}
    
    There's nothing else that should need doing in order for guests to be
    able to use these insns, as the encodings are in what's otherwise NOP
    space.
    
    Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
    Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
 tools/misc/xen-cpuid.c                      | 2 ++
 xen/include/public/arch-x86/cpufeatureset.h | 1 +
 2 files changed, 3 insertions(+)

diff --git a/tools/misc/xen-cpuid.c b/tools/misc/xen-cpuid.c
index 7370f1b56e..2024b39dd3 100644
--- a/tools/misc/xen-cpuid.c
+++ b/tools/misc/xen-cpuid.c
@@ -220,6 +220,8 @@ static const char *const str_7d1[32] =
 {
     [ 4] = "avx-vnni-int8",       [ 5] = "avx-ne-convert",
 
+    [14] = "prefetchi",
+
     [18] = "cet-sss",
 };
 
diff --git a/xen/include/public/arch-x86/cpufeatureset.h 
b/xen/include/public/arch-x86/cpufeatureset.h
index 6b6ce2745c..a8945161f5 100644
--- a/xen/include/public/arch-x86/cpufeatureset.h
+++ b/xen/include/public/arch-x86/cpufeatureset.h
@@ -310,6 +310,7 @@ XEN_CPUFEATURE(MCDT_NO,            13*32+ 5) /*A  MCDT_NO */
 /* Intel-defined CPU features, CPUID level 0x00000007:1.edx, word 15 */
 XEN_CPUFEATURE(AVX_VNNI_INT8,      15*32+ 4) /*A  AVX-VNNI-INT8 Instructions */
 XEN_CPUFEATURE(AVX_NE_CONVERT,     15*32+ 5) /*A  AVX-NE-CONVERT Instructions 
*/
+XEN_CPUFEATURE(PREFETCHI,          15*32+14) /*A  PREFETCHIT{0,1} Instructions 
*/
 XEN_CPUFEATURE(CET_SSS,            15*32+18) /*   CET Supervisor Shadow Stacks 
safe to use */
 
 /* Intel-defined CPU features, MSR_ARCH_CAPS 0x10a.eax, word 16 */
--
generated by git-patchbot for /home/xen/git/xen.git#master