LoongArch: Provide kernel fpu functions

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Provide kernel_fpu_begin()/kernel_fpu_end() to allow the kernel itself
to use fpu. They can be used by some other kernel components, e.g., the
AMDGPU graphic driver for DCN.

Reported-by: WANG Xuerui <kernel@xen0n.name>
Tested-by: WANG Xuerui <kernel@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

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This commit is contained in:

Huacai Chen 2023-05-01 17:19:27 +08:00

parent c23e7f01cf

commit 2b3bd32ea3

3 changed files with 47 additions and 1 deletions

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3

arch/loongarch/include/asm/fpu.h

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2

arch/loongarch/kernel/Makefile

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43

arch/loongarch/kernel/kfpu.c

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