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| author |  Huacai Chen <chenhuacai@loongson.cn>
| 2023-05-01 17:19:27 +0800 |
|---|---|---|
| committer | Huacai Chen <chenhuacai@loongson.cn>
| 2023-05-01 17:19:27 +0800 |
| commit | 2b3bd32ea3a22ea2d5e591da4ac2c2b1fb17c0e0 (patch) | |
| tree | 471e30e5fb3a312649f60e7ff597039a6e8d99d8 /arch/loongarch/include/asm/fpu.h | |
| parent | LoongArch: Relay BCE exceptions to userland as SIGSEGV with si_code=SEGV_BNDERR (diff) | |
| download | linux-2b3bd32ea3a22ea2d5e591da4ac2c2b1fb17c0e0.tar.gz linux-2b3bd32ea3a22ea2d5e591da4ac2c2b1fb17c0e0.tar.bz2 linux-2b3bd32ea3a22ea2d5e591da4ac2c2b1fb17c0e0.zip | |
LoongArch: Provide kernel fpu functions
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>
Diffstat (limited to 'arch/loongarch/include/asm/fpu.h')
| -rw-r--r-- | arch/loongarch/include/asm/fpu.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/loongarch/include/asm/fpu.h b/arch/loongarch/include/asm/fpu.h index 358b254d9c1d..192f8e35d912 100644 --- a/arch/loongarch/include/asm/fpu.h +++ b/arch/loongarch/include/asm/fpu.h @@ -21,6 +21,9 @@ struct sigcontext; +extern void kernel_fpu_begin(void); +extern void kernel_fpu_end(void); + extern void _init_fpu(unsigned int); extern void _save_fp(struct loongarch_fpu *); extern void _restore_fp(struct loongarch_fpu *); |