This patch adds task switch support for vector. It supports partial lazy save and restore mechanism. It also supports all lengths of vlen.
[[email protected]: First available porting to support vector context switching] [[email protected]: Rewrite vector.S to support dynamic vlen, xlen and code refine] [[email protected]: Fix the might_sleep issue in vstate_save, vstate_restore] Signed-off-by: Nick Knight <[email protected]> Signed-off-by: Greentime Hu <[email protected]> Signed-off-by: Guo Ren <[email protected]> Signed-off-by: Vincent Chen <[email protected]> --- arch/riscv/include/asm/switch_to.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/riscv/include/asm/switch_to.h b/arch/riscv/include/asm/switch_to.h index 2afd0124701a..d33a86a48f0d 100644 --- a/arch/riscv/include/asm/switch_to.h +++ b/arch/riscv/include/asm/switch_to.h @@ -87,6 +87,7 @@ static inline void vstate_save(struct task_struct *task, { if ((regs->status & SR_VS) == SR_VS_DIRTY) { struct __riscv_v_state *vstate = &(task->thread.vstate); + __vstate_save(vstate, vstate->datap); __vstate_clean(regs); } -- 2.28.0
