[v9, 06/10] riscv: fpu: drop SR_SD bit checking

[Song Shuai]

在 2023/12/29 22:36, Andy Chiu 写道:
> SR_SD summarizes the dirty status of FS/VS/XS. However, the current code
> structure does not fully utilize it because each extension specific code
> is divided into an individual segment. So remove the SR_SD check for
> now.
> 
Should here add "Link" and "Fixes" tags?
> Signed-off-by: Andy Chiu <andy.chiu at sifive.com>
> ---
>   arch/riscv/include/asm/switch_to.h | 3 +--
>   1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/riscv/include/asm/switch_to.h b/arch/riscv/include/asm/switch_to.h
> index f90d8e42f3c7..7efdb0584d47 100644
> --- a/arch/riscv/include/asm/switch_to.h
> +++ b/arch/riscv/include/asm/switch_to.h
> @@ -53,8 +53,7 @@ static inline void __switch_to_fpu(struct task_struct *prev,
>   	struct pt_regs *regs;
>   
>   	regs = task_pt_regs(prev);
> -	if (unlikely(regs->status & SR_SD))
> -		fstate_save(prev, regs);
> +	fstate_save(prev, regs);
>   	fstate_restore(next, task_pt_regs(next));
>   }
>   
Reviewed-by: Song Shuai <songshuaishuai at tinylab.org>

-- 
Thanks
Song Shuai