arm64: kernel: Add min_field_value and use '>=' for feature detection

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When a new cpu feature is available, the cpu feature bits will have some
initial value, which is incremented when the feature is updated.
This patch changes 'register_value' to be 'min_field_value', and checks
the feature bits value (interpreted as a signed int) is greater than this
minimum.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>

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James Morse 2015-07-21 13:23:29 +01:00 • committed by Will Deacon

parent 1c0763037f

commit 18ffa046c5

2 changed files with 13 additions and 5 deletions

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4

arch/arm64/include/asm/cpufeature.h

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14

arch/arm64/kernel/cpufeature.c

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