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<sys/platform/x86.h>: Add APX support

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Add support for Intel Advanced Performance Extensions:

https://www.intel.com/content/www/us/en/developer/articles/technical/advanced-performance-extensions-apx.html

to <sys/platform/x86.h>.
This commit is contained in:
H.J. Lu
2023-07-26 08:20:16 -07:00
parent c8c8dbbf27
commit 1547d6a64f
5 changed files with 14 additions and 0 deletions
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3
manual/platform.texi
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@@ -209,6 +209,9 @@ The supported processor features are:
@item @item
@code{AMX_TILE} -- Tile architecture. @code{AMX_TILE} -- Tile architecture.
@item
@code{APX_F} -- The APX instruction extensions.
@item @item
@code{ARCH_CAPABILITIES} -- IA32_ARCH_CAPABILITIES MSR. @code{ARCH_CAPABILITIES} -- IA32_ARCH_CAPABILITIES MSR.

1
sysdeps/x86/bits/platform/x86.h
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@@ -312,6 +312,7 @@ enum
x86_cpu_AVX_NE_CONVERT = x86_cpu_index_7_ecx_1_edx + 5, x86_cpu_AVX_NE_CONVERT = x86_cpu_index_7_ecx_1_edx + 5,
x86_cpu_AMX_COMPLEX = x86_cpu_index_7_ecx_1_edx + 8, x86_cpu_AMX_COMPLEX = x86_cpu_index_7_ecx_1_edx + 8,
x86_cpu_PREFETCHI = x86_cpu_index_7_ecx_1_edx + 14, x86_cpu_PREFETCHI = x86_cpu_index_7_ecx_1_edx + 14,
x86_cpu_APX_F = x86_cpu_index_7_ecx_1_edx + 21,
x86_cpu_index_19_ebx x86_cpu_index_19_ebx
= (CPUID_INDEX_19 * 8 * 4 * sizeof (unsigned int) = (CPUID_INDEX_19 * 8 * 4 * sizeof (unsigned int)

4
sysdeps/x86/cpu-features.c
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@@ -226,6 +226,10 @@ update_active (struct cpu_features *cpu_features)
CPU_FEATURE_SET_ACTIVE (cpu_features, AMX_COMPLEX); CPU_FEATURE_SET_ACTIVE (cpu_features, AMX_COMPLEX);
} }
/* APX is usable only if the APX state is supported by kernel. */
if ((xcrlow & bit_APX_state) != 0)
CPU_FEATURE_SET_ACTIVE (cpu_features, APX_F);
/* These features are usable only when OSXSAVE is enabled. */ /* These features are usable only when OSXSAVE is enabled. */
CPU_FEATURE_SET (cpu_features, XSAVE); CPU_FEATURE_SET (cpu_features, XSAVE);
CPU_FEATURE_SET_ACTIVE (cpu_features, XSAVEOPT); CPU_FEATURE_SET_ACTIVE (cpu_features, XSAVEOPT);

4
sysdeps/x86/include/cpu-features.h
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@@ -319,6 +319,7 @@ enum
#define bit_cpu_AVX_NE_CONVERT (1u << 5) #define bit_cpu_AVX_NE_CONVERT (1u << 5)
#define bit_cpu_AMX_COMPLEX (1u << 8) #define bit_cpu_AMX_COMPLEX (1u << 8)
#define bit_cpu_PREFETCHI (1u << 14) #define bit_cpu_PREFETCHI (1u << 14)
#define bit_cpu_APX_F (1u << 21)
/* CPUID_INDEX_19. */ /* CPUID_INDEX_19. */
@@ -562,6 +563,7 @@ enum
#define index_cpu_AVX_NE_CONVERT CPUID_INDEX_7_ECX_1 #define index_cpu_AVX_NE_CONVERT CPUID_INDEX_7_ECX_1
#define index_cpu_AMX_COMPLEX CPUID_INDEX_7_ECX_1 #define index_cpu_AMX_COMPLEX CPUID_INDEX_7_ECX_1
#define index_cpu_PREFETCHI CPUID_INDEX_7_ECX_1 #define index_cpu_PREFETCHI CPUID_INDEX_7_ECX_1
#define index_cpu_APX_F CPUID_INDEX_7_ECX_1
/* CPUID_INDEX_19. */ /* CPUID_INDEX_19. */
@@ -807,6 +809,7 @@ enum
#define reg_AVX_NE_CONVERT edx #define reg_AVX_NE_CONVERT edx
#define reg_AMX_COMPLEX edx #define reg_AMX_COMPLEX edx
#define reg_PREFETCHI edx #define reg_PREFETCHI edx
#define reg_APX_F edx
/* CPUID_INDEX_19. */ /* CPUID_INDEX_19. */
@@ -845,6 +848,7 @@ enum
#define bit_ZMM16_31_state (1u << 7) #define bit_ZMM16_31_state (1u << 7)
#define bit_XTILECFG_state (1u << 17) #define bit_XTILECFG_state (1u << 17)
#define bit_XTILEDATA_state (1u << 18) #define bit_XTILEDATA_state (1u << 18)
#define bit_APX_state (1u << 19)
enum cpu_features_kind enum cpu_features_kind
{ {

2
sysdeps/x86/tst-get-cpu-features.c
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@@ -219,6 +219,7 @@ do_test (void)
CHECK_CPU_FEATURE_PRESENT (AVX_NE_CONVERT); CHECK_CPU_FEATURE_PRESENT (AVX_NE_CONVERT);
CHECK_CPU_FEATURE_PRESENT (AMX_COMPLEX); CHECK_CPU_FEATURE_PRESENT (AMX_COMPLEX);
CHECK_CPU_FEATURE_PRESENT (PREFETCHI); CHECK_CPU_FEATURE_PRESENT (PREFETCHI);
CHECK_CPU_FEATURE_PRESENT (APX_F);
CHECK_CPU_FEATURE_PRESENT (AESKLE); CHECK_CPU_FEATURE_PRESENT (AESKLE);
CHECK_CPU_FEATURE_PRESENT (WIDE_KL); CHECK_CPU_FEATURE_PRESENT (WIDE_KL);
CHECK_CPU_FEATURE_PRESENT (PTWRITE); CHECK_CPU_FEATURE_PRESENT (PTWRITE);
@@ -390,6 +391,7 @@ do_test (void)
CHECK_CPU_FEATURE_ACTIVE (AVX_NE_CONVERT); CHECK_CPU_FEATURE_ACTIVE (AVX_NE_CONVERT);
CHECK_CPU_FEATURE_ACTIVE (AMX_COMPLEX); CHECK_CPU_FEATURE_ACTIVE (AMX_COMPLEX);
CHECK_CPU_FEATURE_ACTIVE (PREFETCHI); CHECK_CPU_FEATURE_ACTIVE (PREFETCHI);
CHECK_CPU_FEATURE_ACTIVE (APX_F);
CHECK_CPU_FEATURE_ACTIVE (AESKLE); CHECK_CPU_FEATURE_ACTIVE (AESKLE);
CHECK_CPU_FEATURE_ACTIVE (WIDE_KL); CHECK_CPU_FEATURE_ACTIVE (WIDE_KL);
CHECK_CPU_FEATURE_ACTIVE (PTWRITE); CHECK_CPU_FEATURE_ACTIVE (PTWRITE);