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| author | Andy Chiu <andy.chiu@sifive.com> | 2024-01-15 08:59:26 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2024-01-16 18:13:59 +0300 |
| commit | d6c78f1ca3e8ec3fd1afa1bc567cdf083e7af9fe (patch) | |
| tree | 3579ec9196e6be855607804bb5b4d1274089b8af /arch/riscv/include/asm/vector.h | |
| parent | a93fdaf183125fea81f66b9bd756ef5a0c30859e (diff) | |
| download | linux-d6c78f1ca3e8ec3fd1afa1bc567cdf083e7af9fe.tar.xz | |
riscv: vector: do not pass task_struct into riscv_v_vstate_{save,restore}()
riscv_v_vstate_{save,restore}() can operate only on the knowlege of
struct __riscv_v_ext_state, and struct pt_regs. Let the caller decides
which should be passed into the function. Meanwhile, the kernel-mode
Vector is going to introduce another vstate, so this also makes functions
potentially able to be reused.
Signed-off-by: Andy Chiu <andy.chiu@sifive.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Tested-by: Björn Töpel <bjorn@rivosinc.com>
Tested-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20240115055929.4736-8-andy.chiu@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'arch/riscv/include/asm/vector.h')
| -rw-r--r-- | arch/riscv/include/asm/vector.h | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/arch/riscv/include/asm/vector.h b/arch/riscv/include/asm/vector.h index 961c4e3d1b62..d75079520629 100644 --- a/arch/riscv/include/asm/vector.h +++ b/arch/riscv/include/asm/vector.h @@ -171,23 +171,19 @@ static inline void riscv_v_vstate_discard(struct pt_regs *regs) __riscv_v_vstate_dirty(regs); } -static inline void riscv_v_vstate_save(struct task_struct *task, +static inline void riscv_v_vstate_save(struct __riscv_v_ext_state *vstate, struct pt_regs *regs) { if ((regs->status & SR_VS) == SR_VS_DIRTY) { - struct __riscv_v_ext_state *vstate = &task->thread.vstate; - __riscv_v_vstate_save(vstate, vstate->datap); __riscv_v_vstate_clean(regs); } } -static inline void riscv_v_vstate_restore(struct task_struct *task, +static inline void riscv_v_vstate_restore(struct __riscv_v_ext_state *vstate, struct pt_regs *regs) { if ((regs->status & SR_VS) != SR_VS_OFF) { - struct __riscv_v_ext_state *vstate = &task->thread.vstate; - __riscv_v_vstate_restore(vstate, vstate->datap); __riscv_v_vstate_clean(regs); } @@ -208,7 +204,7 @@ static inline void __switch_to_vector(struct task_struct *prev, struct pt_regs *regs; regs = task_pt_regs(prev); - riscv_v_vstate_save(prev, regs); + riscv_v_vstate_save(&prev->thread.vstate, regs); riscv_v_vstate_set_restore(next, task_pt_regs(next)); } @@ -226,8 +222,8 @@ static inline bool riscv_v_vstate_query(struct pt_regs *regs) { return false; } static inline bool riscv_v_vstate_ctrl_user_allowed(void) { return false; } #define riscv_v_vsize (0) #define riscv_v_vstate_discard(regs) do {} while (0) -#define riscv_v_vstate_save(task, regs) do {} while (0) -#define riscv_v_vstate_restore(task, regs) do {} while (0) +#define riscv_v_vstate_save(vstate, regs) do {} while (0) +#define riscv_v_vstate_restore(vstate, regs) do {} while (0) #define __switch_to_vector(__prev, __next) do {} while (0) #define riscv_v_vstate_off(regs) do {} while (0) #define riscv_v_vstate_on(regs) do {} while (0) |