glibc/glibc-rh1817513-104.patch

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