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Update AArch64 features to Linux 5.10 (#149)

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Added feature: MTE.
This commit is contained in:
Tamas Zsoldos 2020-12-15 13:28:53 +01:00 committed by GitHub
parent 6d0767e0d9
commit e2f6dea65f
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4 changed files with 6 additions and 1 deletions
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2
include/cpuinfo_aarch64.h
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@ -71,6 +71,7 @@ typedef struct {
int dgh : 1; // Data Gathering Hint instruction.
int rng : 1; // True random number generator support.
int bti : 1; // Branch target identification.
int mte : 1; // Memory tagging extension.
// Make sure to update Aarch64FeaturesEnum below if you add a field here.
} Aarch64Features;
@ -139,6 +140,7 @@ typedef enum {
AARCH64_DGH,
AARCH64_RNG,
AARCH64_BTI,
AARCH64_MTE,
AARCH64_LAST_,
} Aarch64FeaturesEnum;

1
include/internal/hwcaps.h
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@ -79,6 +79,7 @@ CPU_FEATURES_START_CPP_NAMESPACE
#define AARCH64_HWCAP2_DGH (1UL << 15)
#define AARCH64_HWCAP2_RNG (1UL << 16)
#define AARCH64_HWCAP2_BTI (1UL << 17)
#define AARCH64_HWCAP2_MTE (1UL << 18)
// http://elixir.free-electrons.com/linux/latest/source/arch/arm/include/uapi/asm/hwcap.h
#define ARM_HWCAP_SWP (1UL << 0)

3
src/cpuinfo_aarch64.c
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@ -75,7 +75,8 @@
FEATURE(AARCH64_BF16, bf16, "bf16", 0, AARCH64_HWCAP2_BF16) \
FEATURE(AARCH64_DGH, dgh, "dgh", 0, AARCH64_HWCAP2_DGH) \
FEATURE(AARCH64_RNG, rng, "rng", 0, AARCH64_HWCAP2_RNG) \
FEATURE(AARCH64_BTI, bti, "bti", 0, AARCH64_HWCAP2_BTI)
FEATURE(AARCH64_BTI, bti, "bti", 0, AARCH64_HWCAP2_BTI) \
FEATURE(AARCH64_MTE, mte, "mte", 0, AARCH64_HWCAP2_MTE)
#define DEFINE_TABLE_FEATURE_TYPE Aarch64Features
#include "define_tables.h"

1
test/cpuinfo_aarch64_test.cc
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@ -165,6 +165,7 @@ CPU revision : 3)");
EXPECT_FALSE(info.features.dgh);
EXPECT_FALSE(info.features.rng);
EXPECT_FALSE(info.features.bti);
EXPECT_FALSE(info.features.mte);
}
} // namespace