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commit c712401bc641b66d9bd558884751d8979e2e0e96
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Author: H.J. Lu <hjl.tools@gmail.com>
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Date: Thu Oct 8 08:38:03 2020 -0700
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<sys/platform/x86.h>: Add Intel HRESET support
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Add Intel HRESET support to <sys/platform/x86.h>.
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diff --git a/manual/platform.texi b/manual/platform.texi
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index 283f255679643d3e..1e44525552f5bda5 100644
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--- a/manual/platform.texi
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+++ b/manual/platform.texi
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@@ -346,6 +346,9 @@ extensions.
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@item
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@code{HTT} -- Max APIC IDs reserved field is Valid.
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+@item
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+@code{HRESET} -- History reset.
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+
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@item
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@code{HYBRID} -- Hybrid processor.
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diff --git a/sysdeps/x86/sys/platform/x86.h b/sysdeps/x86/sys/platform/x86.h
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index 0942ad7a7f7d4ce2..357c6f1c5605d82d 100644
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--- a/sysdeps/x86/sys/platform/x86.h
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+++ b/sysdeps/x86/sys/platform/x86.h
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@@ -313,6 +313,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* EAX. */
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#define bit_cpu_AVX_VNNI (1u << 4)
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#define bit_cpu_AVX512_BF16 (1u << 5)
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+#define bit_cpu_HRESET (1u << 22)
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/* COMMON_CPUID_INDEX_19. */
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@@ -533,6 +534,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* EAX. */
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#define index_cpu_AVX_VNNI COMMON_CPUID_INDEX_7_ECX_1
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#define index_cpu_AVX512_BF16 COMMON_CPUID_INDEX_7_ECX_1
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+#define index_cpu_HRESET COMMON_CPUID_INDEX_7_ECX_1
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/* COMMON_CPUID_INDEX_19. */
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@@ -753,6 +755,7 @@ extern const struct cpu_features *__x86_get_cpu_features (unsigned int)
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/* EAX. */
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#define reg_AVX_VNNI eax
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#define reg_AVX512_BF16 eax
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+#define reg_HRESET eax
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/* COMMON_CPUID_INDEX_19. */
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diff --git a/sysdeps/x86/tst-get-cpu-features.c b/sysdeps/x86/tst-get-cpu-features.c
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index 8894d9f08ac36633..1516af1d461a801b 100644
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--- a/sysdeps/x86/tst-get-cpu-features.c
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+++ b/sysdeps/x86/tst-get-cpu-features.c
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@@ -221,6 +221,7 @@ do_test (void)
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CHECK_CPU_FEATURE (WBNOINVD);
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CHECK_CPU_FEATURE (AVX_VNNI);
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CHECK_CPU_FEATURE (AVX512_BF16);
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+ CHECK_CPU_FEATURE (HRESET);
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CHECK_CPU_FEATURE (AESKLE);
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CHECK_CPU_FEATURE (WIDE_KL);
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