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X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Jun 2022 10:27:33.9055 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: f7a17af6-1c5c-4a36-aa8b-f5be247aa4ba X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: i6QlyTTOekx/5tOquLxD+l1jfCdlm4NpYA4e6nRZRGEW/fEz3KUfciYc2OBYAR9rBw1Y4tNDV0c3M4WYtl+JoA== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB7PR04MB5113 Signed-off-by: Jan Beulich Reviewed-by: Andrew Cooper --- a/tools/libs/light/libxl_cpuid.c +++ b/tools/libs/light/libxl_cpuid.c @@ -221,6 +221,7 @@ int libxl_cpuid_parse_config(libxl_cpuid {"serialize", 0x00000007, 0, CPUID_REG_EDX, 14, 1}, {"tsxldtrk", 0x00000007, 0, CPUID_REG_EDX, 16, 1}, {"cet-ibt", 0x00000007, 0, CPUID_REG_EDX, 20, 1}, + {"avx512-fp16", 0x00000007, 0, CPUID_REG_EDX, 23, 1}, {"ibrsb", 0x00000007, 0, CPUID_REG_EDX, 26, 1}, {"stibp", 0x00000007, 0, CPUID_REG_EDX, 27, 1}, {"l1d-flush", 0x00000007, 0, CPUID_REG_EDX, 28, 1}, --- a/tools/misc/xen-cpuid.c +++ b/tools/misc/xen-cpuid.c @@ -175,6 +175,7 @@ static const char *const str_7d0[32] = [16] = "tsxldtrk", [18] = "pconfig", [20] = "cet-ibt", + /* 22 */ [23] = "avx512-fp16", [26] = "ibrsb", [27] = "stibp", [28] = "l1d-flush", [29] = "arch-caps", --- a/xen/arch/x86/include/asm/cpufeature.h +++ b/xen/arch/x86/include/asm/cpufeature.h @@ -138,6 +138,7 @@ #define cpu_has_rtm_always_abort boot_cpu_has(X86_FEATURE_RTM_ALWAYS_ABORT) #define cpu_has_tsx_force_abort boot_cpu_has(X86_FEATURE_TSX_FORCE_ABORT) #define cpu_has_serialize boot_cpu_has(X86_FEATURE_SERIALIZE) +#define cpu_has_avx512_fp16 boot_cpu_has(X86_FEATURE_AVX512_FP16) #define cpu_has_arch_caps boot_cpu_has(X86_FEATURE_ARCH_CAPS) /* CPUID level 0x00000007:1.eax */ --- a/xen/include/public/arch-x86/cpufeatureset.h +++ b/xen/include/public/arch-x86/cpufeatureset.h @@ -281,6 +281,7 @@ XEN_CPUFEATURE(TSX_FORCE_ABORT, 9*32+13) XEN_CPUFEATURE(SERIALIZE, 9*32+14) /*A SERIALIZE insn */ XEN_CPUFEATURE(TSXLDTRK, 9*32+16) /*a TSX load tracking suspend/resume insns */ XEN_CPUFEATURE(CET_IBT, 9*32+20) /* CET - Indirect Branch Tracking */ +XEN_CPUFEATURE(AVX512_FP16, 9*32+23) /* AVX512 FP16 instructions */ XEN_CPUFEATURE(IBRSB, 9*32+26) /*A IBRS and IBPB support (used by Intel) */ XEN_CPUFEATURE(STIBP, 9*32+27) /*A STIBP */ XEN_CPUFEATURE(L1D_FLUSH, 9*32+28) /*S MSR_FLUSH_CMD and L1D flush. */ --- a/xen/tools/gen-cpuid.py +++ b/xen/tools/gen-cpuid.py @@ -267,7 +267,8 @@ def crunch_numbers(state): # AVX512 extensions acting on vectors of bytes/words are made # dependents of AVX512BW (as to requiring wider than 16-bit mask # registers), despite the SDM not formally making this connection. - AVX512BW: [AVX512_VBMI, AVX512_VBMI2, AVX512_BITALG, AVX512_BF16], + AVX512BW: [AVX512_VBMI, AVX512_VBMI2, AVX512_BITALG, AVX512_BF16, + AVX512_FP16], # Extensions with VEX/EVEX encodings keyed to a separate feature # flag are made dependents of their respective legacy feature.