6.13-stable review patch. If anyone has any objections, please let me know.
------------------
From: Yong-Xuan Wang <yongxuan.wang@xxxxxxxxxx>
commit aa49bc2ca8524186ceb0811c23a7f00c3dea6987 upstream.
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@xxxxxxxxxx>
Reviewed-by: Zong Li <zong.li@xxxxxxxxxx>
Reviewed-by: Andy Chiu <AndybnAC@xxxxxxxxx>
Reviewed-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20241220083926.19453-2-yongxuan.wang@xxxxxxxxxx
Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/riscv/kernel/signal.c | 6 ------
1 file changed, 6 deletions(-)
--- 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
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;
