diff options
| -rw-r--r-- | target/i386/cpu.c | 2 | ||||
| -rw-r--r-- | target/i386/cpu.h | 2 | ||||
| -rw-r--r-- | target/i386/kvm.c | 6 |
3 files changed, 9 insertions, 1 deletions
diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 6c87c99487..b635302859 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -1058,7 +1058,7 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = { .type = CPUID_FEATURE_WORD, .feat_names = { NULL, "avx512vbmi", "umip", "pku", - NULL /* ospke */, NULL, "avx512vbmi2", NULL, + NULL /* ospke */, "waitpkg", "avx512vbmi2", NULL, "gfni", "vaes", "vpclmulqdq", "avx512vnni", "avx512bitalg", NULL, "avx512-vpopcntdq", NULL, "la57", NULL, NULL, NULL, diff --git a/target/i386/cpu.h b/target/i386/cpu.h index c50a9c7257..112f8670d9 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -731,6 +731,8 @@ typedef uint64_t FeatureWordArray[FEATURE_WORDS]; #define CPUID_7_0_ECX_PKU (1U << 3) /* OS Enable Protection Keys */ #define CPUID_7_0_ECX_OSPKE (1U << 4) +/* UMONITOR/UMWAIT/TPAUSE Instructions */ +#define CPUID_7_0_ECX_WAITPKG (1U << 5) /* Additional AVX-512 Vector Byte Manipulation Instruction */ #define CPUID_7_0_ECX_AVX512_VBMI2 (1U << 6) /* Galois Field New Instructions */ diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 49a301190a..94c233943e 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -401,6 +401,12 @@ uint32_t kvm_arch_get_supported_cpuid(KVMState *s, uint32_t function, if (host_tsx_blacklisted()) { ret &= ~(CPUID_7_0_EBX_RTM | CPUID_7_0_EBX_HLE); } + } else if (function == 7 && index == 0 && reg == R_ECX) { + if (enable_cpu_pm) { + ret |= CPUID_7_0_ECX_WAITPKG; + } else { + ret &= ~CPUID_7_0_ECX_WAITPKG; + } } else if (function == 7 && index == 0 && reg == R_EDX) { /* * Linux v4.17-v4.20 incorrectly return ARCH_CAPABILITIES on SVM hosts. |