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| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-03-12 10:04:14 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-03-19 18:14:27 +0000 |
| commit | 7206dc93a58fb76421c4411eefa3c003337bcb2d (patch) | |
| tree | 9bf4f279e538a41472bf6f5e8e3088645c86f8b0 /arch/arm64/kernel/cpuinfo.c | |
| parent | 847ecd3fa311cde0f10a1b66c572abb136742b1d (diff) | |
| download | lwn-7206dc93a58fb76421c4411eefa3c003337bcb2d.tar.gz lwn-7206dc93a58fb76421c4411eefa3c003337bcb2d.zip | |
arm64: Expose Arm v8.4 features
Expose the new features introduced by Arm v8.4 extensions to
Arm v8-A profile.
These include :
1) Data indpendent timing of instructions. (DIT, exposed as HWCAP_DIT)
2) Unaligned atomic instructions and Single-copy atomicity of loads
and stores. (AT, expose as HWCAP_USCAT)
3) LDAPR and STLR instructions with immediate offsets (extension to
LRCPC, exposed as HWCAP_ILRCPC)
4) Flag manipulation instructions (TS, exposed as HWCAP_FLAGM).
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Dave Martin <dave.martin@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/cpuinfo.c')
| -rw-r--r-- | arch/arm64/kernel/cpuinfo.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm64/kernel/cpuinfo.c b/arch/arm64/kernel/cpuinfo.c index 7f94623df8a5..e9ab7b3ed317 100644 --- a/arch/arm64/kernel/cpuinfo.c +++ b/arch/arm64/kernel/cpuinfo.c @@ -77,6 +77,10 @@ static const char *const hwcap_str[] = { "sha512", "sve", "asimdfhm", + "dit", + "uscat", + "ilrcpc", + "flagm", NULL }; |