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<sys/platform/x86.h>: Add Intel Key Locker support
Add Intel Key Locker: https://software.intel.com/content/www/us/en/develop/download/intel-key-locker-specification.html support to <sys/platform/x86.h>. Intel Key Locker has 1. KL: AES Key Locker instructions. 2. WIDE_KL: AES wide Key Locker instructions. 3. AESKLE: AES Key Locker instructions are enabled by OS. Applications should use if (CPU_FEATURE_USABLE (KL)) and if (CPU_FEATURE_USABLE (WIDE_KL)) to check if AES Key Locker instructions and AES wide Key Locker instructions are usable.
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@ -177,6 +177,9 @@ The supported processor features are:
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@item
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@code{AES} -- The AES instruction extensions.
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@item
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@code{AESKLE} -- AES Key Locker instructions are enabled by OS.
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@item
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@code{AMX_BF16} -- Tile computational operations on bfloat16 numbers.
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@ -353,6 +356,9 @@ the indirect branch predictor barrier (IBPB).
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@item
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@code{INVPCID} -- INVPCID instruction.
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@item
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@code{KL} -- AES Key Locker instructions.
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@item
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@code{L1D_FLUSH} -- IA32_FLUSH_CMD MSR.
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@ -598,6 +604,9 @@ using a TSC deadline value.
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@item
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@code{WBNOINVD} -- WBINVD/WBNOINVD instructions.
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@item
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@code{WIDE_KL} -- AES wide Key Locker instructions.
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@item
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@code{X2APIC} -- x2APIC.
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@ -269,6 +269,14 @@ update_usable (struct cpu_features *cpu_features)
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/* Determine if PKU is usable. */
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if (CPU_FEATURES_CPU_P (cpu_features, OSPKE))
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CPU_FEATURE_SET (cpu_features, PKU);
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/* Determine if Key Locker instructions are usable. */
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if (CPU_FEATURES_CPU_P (cpu_features, AESKLE))
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{
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CPU_FEATURE_SET (cpu_features, AESKLE);
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CPU_FEATURE_SET_USABLE (cpu_features, KL);
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CPU_FEATURE_SET_USABLE (cpu_features, WIDE_KL);
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}
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}
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static void
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@ -341,6 +349,12 @@ get_common_indices (struct cpu_features *cpu_features,
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cpu_features->features[COMMON_CPUID_INDEX_D_ECX_1].cpuid.ecx,
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cpu_features->features[COMMON_CPUID_INDEX_D_ECX_1].cpuid.edx);
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if (cpu_features->basic.max_cpuid >= 0x19)
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__cpuid_count (0x19, 0,
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cpu_features->features[COMMON_CPUID_INDEX_19].cpuid.eax,
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cpu_features->features[COMMON_CPUID_INDEX_19].cpuid.ebx,
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cpu_features->features[COMMON_CPUID_INDEX_19].cpuid.ecx,
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cpu_features->features[COMMON_CPUID_INDEX_19].cpuid.edx);
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}
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_Static_assert (((index_arch_Fast_Unaligned_Load
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@ -28,6 +28,7 @@ enum
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COMMON_CPUID_INDEX_80000007,
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COMMON_CPUID_INDEX_80000008,
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COMMON_CPUID_INDEX_7_ECX_1,
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COMMON_CPUID_INDEX_19,
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/* Keep the following line at the end. */
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COMMON_CPUID_INDEX_MAX
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};
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@ -224,7 +225,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* Note: Bits 17-21: The value of MAWAU used by the BNDLDX and BNDSTX
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instructions in 64-bit mode. */
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#define bit_cpu_RDPID (1u << 22)
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#define bit_cpu_INDEX_7_ECX_23 (1u << 23)
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#define bit_cpu_KL (1u << 23)
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#define bit_cpu_INDEX_7_ECX_24 (1u << 24)
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#define bit_cpu_CLDEMOTE (1u << 25)
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#define bit_cpu_INDEX_7_ECX_26 (1u << 26)
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@ -312,6 +313,12 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* EAX. */
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#define bit_cpu_AVX512_BF16 (1u << 5)
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/* COMMON_CPUID_INDEX_19. */
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/* EBX. */
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#define bit_cpu_AESKLE (1u << 0)
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#define bit_cpu_WIDE_KL (1u << 2)
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/* COMMON_CPUID_INDEX_1. */
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/* ECX. */
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@ -437,7 +444,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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#define index_cpu_INDEX_7_ECX_15 COMMON_CPUID_INDEX_7
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#define index_cpu_INDEX_7_ECX_16 COMMON_CPUID_INDEX_7
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#define index_cpu_RDPID COMMON_CPUID_INDEX_7
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#define index_cpu_INDEX_7_ECX_23 COMMON_CPUID_INDEX_7
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#define index_cpu_KL COMMON_CPUID_INDEX_7
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#define index_cpu_INDEX_7_ECX_24 COMMON_CPUID_INDEX_7
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#define index_cpu_CLDEMOTE COMMON_CPUID_INDEX_7
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#define index_cpu_INDEX_7_ECX_26 COMMON_CPUID_INDEX_7
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@ -525,6 +532,12 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* EAX. */
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#define index_cpu_AVX512_BF16 COMMON_CPUID_INDEX_7_ECX_1
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/* COMMON_CPUID_INDEX_19. */
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/* EBX. */
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#define index_cpu_AESKLE COMMON_CPUID_INDEX_19
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#define index_cpu_WIDE_KL COMMON_CPUID_INDEX_19
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/* COMMON_CPUID_INDEX_1. */
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/* ECX. */
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@ -650,7 +663,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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#define reg_INDEX_7_ECX_15 ecx
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#define reg_INDEX_7_ECX_16 ecx
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#define reg_RDPID ecx
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#define reg_INDEX_7_ECX_23 ecx
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#define reg_KL ecx
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#define reg_INDEX_7_ECX_24 ecx
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#define reg_CLDEMOTE ecx
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#define reg_INDEX_7_ECX_26 ecx
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@ -738,4 +751,10 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* EAX. */
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#define reg_AVX512_BF16 eax
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/* COMMON_CPUID_INDEX_19. */
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/* EBX. */
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#define reg_AESKLE ebx
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#define reg_WIDE_KL ebx
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#endif /* _SYS_PLATFORM_X86_H */
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@ -172,6 +172,7 @@ do_test (void)
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CHECK_CPU_FEATURE (AVX512_BITALG);
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CHECK_CPU_FEATURE (AVX512_VPOPCNTDQ);
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CHECK_CPU_FEATURE (RDPID);
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CHECK_CPU_FEATURE (KL);
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CHECK_CPU_FEATURE (CLDEMOTE);
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CHECK_CPU_FEATURE (MOVDIRI);
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CHECK_CPU_FEATURE (MOVDIR64B);
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@ -219,6 +220,8 @@ do_test (void)
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CHECK_CPU_FEATURE (INVARIANT_TSC);
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CHECK_CPU_FEATURE (WBNOINVD);
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CHECK_CPU_FEATURE (AVX512_BF16);
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CHECK_CPU_FEATURE (AESKLE);
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CHECK_CPU_FEATURE (WIDE_KL);
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printf ("Usable CPU features:\n");
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CHECK_CPU_FEATURE_USABLE (SSE3);
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@ -325,6 +328,7 @@ do_test (void)
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CHECK_CPU_FEATURE_USABLE (AVX512_BITALG);
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CHECK_CPU_FEATURE_USABLE (AVX512_VPOPCNTDQ);
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CHECK_CPU_FEATURE_USABLE (RDPID);
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CHECK_CPU_FEATURE_USABLE (KL);
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CHECK_CPU_FEATURE_USABLE (CLDEMOTE);
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CHECK_CPU_FEATURE_USABLE (MOVDIRI);
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CHECK_CPU_FEATURE_USABLE (MOVDIR64B);
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@ -372,6 +376,8 @@ do_test (void)
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CHECK_CPU_FEATURE_USABLE (INVARIANT_TSC);
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CHECK_CPU_FEATURE_USABLE (WBNOINVD);
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CHECK_CPU_FEATURE_USABLE (AVX512_BF16);
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CHECK_CPU_FEATURE_USABLE (AESKLE);
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CHECK_CPU_FEATURE_USABLE (WIDE_KL);
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return 0;
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}
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