[v10,06/10] riscv: fpu: drop SR_SD bit checking

Commit Message

Andy Chiu Jan. 11, 2024, 1:15 p.m. UTC

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.

Signed-off-by: Andy Chiu <[e-mail]>
Reviewed-by: Song Shuai <[e-mail]>
Reviewed-by: Guo Ren <[e-mail]>
---
 arch/riscv/include/asm/switch_to.h | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

Patch

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));
 }