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| author | Catalin Marinas <catalin.marinas@arm.com> | 2020-07-24 12:41:31 +0300 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2020-07-24 13:55:29 +0300 |
| commit | a46cec12f4a53ee5113f42b327cbb8d4cda074d2 (patch) | |
| tree | 936e213b8b2a59f6e24185e776374fa7ebcef3f2 /arch/arm64/include/asm/hwcap.h | |
| parent | 0ae3b13aab210e2a8c14371731abddfee228ae24 (diff) | |
| download | linux-a46cec12f4a53ee5113f42b327cbb8d4cda074d2.tar.xz | |
arm64: Reserve HWCAP2_MTE as (1 << 18)
While MTE is not supported in the upstream kernel yet, add a comment
that HWCAP2_MTE as (1 << 18) is reserved. Glibc makes use of it for the
resolving (ifunc) of the MTE-safe string routines.
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include/asm/hwcap.h')
| -rw-r--r-- | arch/arm64/include/asm/hwcap.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/hwcap.h b/arch/arm64/include/asm/hwcap.h index d683bcbf1e7c..22f73fe09030 100644 --- a/arch/arm64/include/asm/hwcap.h +++ b/arch/arm64/include/asm/hwcap.h @@ -95,6 +95,7 @@ #define KERNEL_HWCAP_DGH __khwcap2_feature(DGH) #define KERNEL_HWCAP_RNG __khwcap2_feature(RNG) #define KERNEL_HWCAP_BTI __khwcap2_feature(BTI) +/* reserved for KERNEL_HWCAP_MTE __khwcap2_feature(MTE) */ /* * This yields a mask that user programs can use to figure out what |