target-i386: Enable clflushopt/clwb/pcommit instructions These instructions are used by NVDIMM drivers and the specification is located at: https://software.intel.com/sites/default/files/managed/0d/53/319433-022.pdf There instructions are available on Skylake Server. Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
diff --git a/target-i386/cpu.c b/target-i386/cpu.c index 090d1d8..0d080c1 100644 --- a/target-i386/cpu.c +++ b/target-i386/cpu.c
@@ -259,8 +259,8 @@ static const char *cpuid_7_0_ebx_feature_name[] = { "fsgsbase", "tsc_adjust", NULL, "bmi1", "hle", "avx2", NULL, "smep", "bmi2", "erms", "invpcid", "rtm", NULL, NULL, "mpx", NULL, - "avx512f", NULL, "rdseed", "adx", "smap", NULL, NULL, NULL, - NULL, NULL, "avx512pf", "avx512er", "avx512cd", NULL, NULL, NULL, + "avx512f", NULL, "rdseed", "adx", "smap", NULL, "pcommit", "clflushopt", + "clwb", NULL, "avx512pf", "avx512er", "avx512cd", NULL, NULL, NULL, }; static const char *cpuid_apm_edx_feature_name[] = {
diff --git a/target-i386/cpu.h b/target-i386/cpu.h index 62f7879..fc4a605 100644 --- a/target-i386/cpu.h +++ b/target-i386/cpu.h
@@ -576,6 +576,9 @@ #define CPUID_7_0_EBX_RDSEED (1U << 18) #define CPUID_7_0_EBX_ADX (1U << 19) #define CPUID_7_0_EBX_SMAP (1U << 20) +#define CPUID_7_0_EBX_PCOMMIT (1U << 22) /* Persistent Commit */ +#define CPUID_7_0_EBX_CLFLUSHOPT (1U << 23) /* Flush a Cache Line Optimized */ +#define CPUID_7_0_EBX_CLWB (1U << 24) /* Cache Line Write Back */ #define CPUID_7_0_EBX_AVX512PF (1U << 26) /* AVX-512 Prefetch */ #define CPUID_7_0_EBX_AVX512ER (1U << 27) /* AVX-512 Exponential and Reciprocal */ #define CPUID_7_0_EBX_AVX512CD (1U << 28) /* AVX-512 Conflict Detection */