From 353f98c9ad52ff4b8cfe553c90be04f747a14c98 Mon Sep 17 00:00:00 2001 From: Cathy Zhang Date: Mon, 13 Apr 2020 14:52:38 +0800 Subject: [PATCH] x86/cpu: Enable AVX512_VP2INTERSECT cpu feature AVX512_VP2INTERSECT compute vector pair intersection to a pair of mask registers, which is introduced with intel Tiger Lake, defining as CPUID.(EAX=7,ECX=0):EDX[bit 08]. Refer to the following release spec: https://software.intel.com/sites/default/files/managed/c5/15/\ architecture-instruction-set-extensions-programming-reference.pdf Signed-off-by: Cathy Zhang Message-Id: <1586760758-13638-1-git-send-email-cathy.zhang@intel.com> Signed-off-by: Paolo Bonzini --- target/i386/cpu.c | 2 +- target/i386/cpu.h | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index b5705cda86..e89d9fa894 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -985,7 +985,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .feat_names = { NULL, NULL, "avx512-4vnniw", "avx512-4fmaps", NULL, NULL, NULL, NULL, - NULL, NULL, "md-clear", NULL, + "avx512-vp2intersect", NULL, "md-clear", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL /* pconfig */, NULL, NULL, NULL, NULL, NULL, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 37572bd437..100476ee89 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -772,6 +772,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS]; #define CPUID_7_0_EDX_AVX512_4VNNIW (1U << 2) /* AVX512 Multiply Accumulation Single Precision */ #define CPUID_7_0_EDX_AVX512_4FMAPS (1U << 3) +/* AVX512 Vector Pair Intersection to a Pair of Mask Registers */ +#define CPUID_7_0_EDX_AVX512_VP2INTERSECT (1U << 8) /* Speculation Control */ #define CPUID_7_0_EDX_SPEC_CTRL (1U << 26) /* Single Thread Indirect Branch Predictors */ -- 2.42.0