[PATCH 1/2] riscv: signal: fix signal frame size
Andy Chiu
andybnac at gmail.com
Wed Dec 11 07:23:39 PST 2024
Hi Young-Xuan,
Yong-Xuan Wang <yongxuan.wang at sifive.com> 於 2024年12月10日 週二 下午10:24寫道:
>
> The signal context of certain RISC-V extensions will be appended after
> struct __riscv_extra_ext_header, which already includes an empty context
> header. Therefore, there is no need to preserve a separate hdr for the
> END of signal context.
>
> Fixes: 8ee0b41898fa ("riscv: signal: Add sigcontext save/restore for vector")
> Signed-off-by: Yong-Xuan Wang <yongxuan.wang at sifive.com>
> Reviewed-by: Zong Li <zong.li at sifive.com>
> ---
> arch/riscv/kernel/signal.c | 6 ------
> 1 file changed, 6 deletions(-)
>
> diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c
> index dcd282419456..c3c517b9eee5 100644
> --- a/arch/riscv/kernel/signal.c
> +++ b/arch/riscv/kernel/signal.c
> @@ -215,12 +215,6 @@ static size_t get_rt_frame_size(bool cal_all)
> if (cal_all || riscv_v_vstate_query(task_pt_regs(current)))
> total_context_size += riscv_v_sc_size;
> }
> - /*
> - * Preserved a __riscv_ctx_hdr for END signal context header if an
> - * extension uses __riscv_extra_ext_header
> - */
> - if (total_context_size)
> - total_context_size += sizeof(struct __riscv_ctx_hdr);
>
> frame_size += total_context_size;
>
> --
> 2.17.1
>
Thanks for the findings
Reviewed-by: Andy Chiu <AndybnAC at gmail.com>
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