diff options
| author | Andy Chiu <andy.chiu@sifive.com> | 2024-01-15 06:59:25 +0100 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-01-16 16:13:58 +0100 |
| commit | a93fdaf183125fea81f66b9bd756ef5a0c30859e (patch) | |
| tree | 925d506ca51e1423243a3e379a52f34a00881621 /arch | |
| parent | riscv: lib: vectorize copy_to_user/copy_from_user (diff) | |
| download | linux-a93fdaf183125fea81f66b9bd756ef5a0c30859e.tar.xz linux-a93fdaf183125fea81f66b9bd756ef5a0c30859e.zip | |
riscv: fpu: drop SR_SD bit checking
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 <andy.chiu@sifive.com>
Reviewed-by: Song Shuai <songshuaishuai@tinylab.org>
Reviewed-by: Guo Ren <guoren@kernel.org>
Tested-by: Björn Töpel <bjorn@rivosinc.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20240115055929.4736-7-andy.chiu@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/riscv/include/asm/switch_to.h | 3 |
1 files changed, 1 insertions, 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)); } |