LoongArch: Allow specify SIMD width via kernel parameters

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For power saving or debugging purpose, we usually want to limit the SIMD
(LSX/LASX) usage on a rich feature platform. So allow specify SIMD width
via kernel parameters "simd=".

Allowed values of "simd=" are any integers, and recommended values are:
0:		Disable all SIMD features;
128:		Enable at most 128bit SIMD features;
256:		Enable at most 256bit SIMD features;
-1(default):	Enable as many as possible SIMD features automatically.

Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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This commit is contained in:

Huacai Chen 2025-10-02 22:39:07 +08:00

parent 98662be7ef

commit 5dcddd268a

1 changed files with 44 additions and 2 deletions

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arch/loongarch/kernel/cpu-probe.c

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