From: Jiaxi Chen <jiaxi.c...@linux.intel.com> Latest Intel platform Granite Rapids has introduced a new instruction - AMX-FP16, which performs dot-products of two FP16 tiles and accumulates the results into a packed single precision tile. AMX-FP16 adds FP16 capability and allows a FP16 GPU trained model to run faster without loss of accuracy or added SW overhead.
The bit definition: CPUID.(EAX=7,ECX=1):EAX[bit 21] Add CPUID definition for AMX-FP16. Signed-off-by: Jiaxi Chen <jiaxi.c...@linux.intel.com> Signed-off-by: Tao Su <tao1...@linux.intel.com> --- 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 e54e13d050..ed08a52619 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -876,7 +876,7 @@ FeatureWordInfo feature_word_info[FEATURE_WORDS] = { NULL, NULL, "fzrm", "fsrs", "fsrc", NULL, NULL, NULL, NULL, NULL, NULL, NULL, - NULL, NULL, NULL, NULL, + NULL, "amx-fp16", NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, }, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 7df8f4b8f9..ae6a0fdfc2 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -912,6 +912,8 @@ uint64_t x86_cpu_get_supported_feature_word(FeatureWord w, #define CPUID_7_1_EAX_FSRS (1U << 11) /* Fast Short REP CMPS/SCAS */ #define CPUID_7_1_EAX_FSRC (1U << 12) +/* Support Tile Computational Operations on FP16 Numbers */ +#define CPUID_7_1_EAX_AMX_FP16 (1U << 21) /* XFD Extend Feature Disabled */ #define CPUID_D_1_EAX_XFD (1U << 4) -- 2.34.1