[Xen-devel] [PATCH v2] x86/cpuid: Add AVX512_VPOPCNTDQ support

[He Chen <he.chen@xxxxxxxxxxxxxxx>]

AVX512_VPOPCNTDQ: Vector POPCNT instructions for word and qwords.
variable precision.

Signed-off-by: He Chen <he.chen@xxxxxxxxxxxxxxx>
---
Changes from v1:
renanme VPOPCNTDQ to AVX512_VPOPCNTDQ.
---
 xen/include/public/arch-x86/cpufeatureset.h | 1 +
 xen/tools/gen-cpuid.py                      | 3 ++-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/xen/include/public/arch-x86/cpufeatureset.h 
b/xen/include/public/arch-x86/cpufeatureset.h
index 565ccd5..c9b38e5 100644
--- a/xen/include/public/arch-x86/cpufeatureset.h
+++ b/xen/include/public/arch-x86/cpufeatureset.h
@@ -226,6 +226,7 @@ XEN_CPUFEATURE(PREFETCHWT1,   6*32+ 0) /*A  PREFETCHWT1 
instruction */
 XEN_CPUFEATURE(AVX512VBMI,    6*32+ 1) /*A  AVX-512 Vector Byte Manipulation 
Instrs */
 XEN_CPUFEATURE(PKU,           6*32+ 3) /*H  Protection Keys for Userspace */
 XEN_CPUFEATURE(OSPKE,         6*32+ 4) /*!  OS Protection Keys Enable */
+XEN_CPUFEATURE(AVX512_VPOPCNTDQ, 6*32+14) /*A  POPCNT for vectors of DW/QW */
 
 /* AMD-defined CPU features, CPUID level 0x80000007.edx, word 7 */
 XEN_CPUFEATURE(ITSC,          7*32+ 8) /*   Invariant TSC */
diff --git a/xen/tools/gen-cpuid.py b/xen/tools/gen-cpuid.py
index 420a5cc..4a673b0 100755
--- a/xen/tools/gen-cpuid.py
+++ b/xen/tools/gen-cpuid.py
@@ -255,7 +255,8 @@ def crunch_numbers(state):
         # 512bit registers, and the instructions themselves. All further 
AVX512 features
         # are built on top of AVX512F
         AVX512F: [AVX512DQ, AVX512IFMA, AVX512PF, AVX512ER, AVX512CD,
-                  AVX512BW, AVX512VL, AVX512VBMI, AVX512_4VNNIW, 
AVX512_4FMAPS],
+                  AVX512BW, AVX512VL, AVX512VBMI, AVX512_4VNNIW,
+                  AVX512_4FMAPS, AVX512_VPOPCNTDQ],
     }
 
     deep_features = tuple(sorted(deps.keys()))
-- 
2.7.4


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel