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| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2020-05-19 15:10:40 +0530 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-05-21 15:47:11 +0100 |
| commit | e965bcb0625626c691677e9283cee354c5b2433a (patch) | |
| tree | 51e369507bbb5c67d0c8cc246000029e9c041d3d /arch/arm64/kernel/cpuinfo.c | |
| parent | 1ed1b90a0594c8c9d31e8bb8be25a2b37717dc9e (diff) | |
| download | linux-e965bcb0625626c691677e9283cee354c5b2433a.tar.bz2 | |
arm64/cpufeature: Make doublelock a signed feature in ID_AA64DFR0
Double lock feature can have the following possible values.
0b0000 - Double lock implemented
0b1111 - Double lock not implemented
But in case of a conflict the safe value should be 0b1111. Hence this must
be a signed feature instead. Also change FTR_EXACT to FTR_LOWER_SAFE. While
here, fix the erroneous bit width value from 28 to 4.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Suggested-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/1589881254-10082-4-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/kernel/cpuinfo.c')
0 files changed, 0 insertions, 0 deletions