6.6-stable review patch. If anyone has any objections, please let me know.
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From: Yong-Xuan Wang yongxuan.wang@sifive.com
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@sifive.com Reviewed-by: Zong Li zong.li@sifive.com Reviewed-by: Andy Chiu AndybnAC@gmail.com Reviewed-by: Alexandre Ghiti alexghiti@rivosinc.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20241220083926.19453-2-yongxuan.wang@sifive.com Signed-off-by: Palmer Dabbelt palmer@rivosinc.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/riscv/kernel/signal.c | 6 ------ 1 file changed, 6 deletions(-)
--- a/arch/riscv/kernel/signal.c +++ b/arch/riscv/kernel/signal.c @@ -211,12 +211,6 @@ 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;