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From: Huang Pei <huangpei@loongson.cn>
To: Thomas Bogendoerfer <tsbogend@alpha.franken.de>, ambrosehua@gmail.com
Cc: Bibo Mao <maobibo@loongson.cn>,
	Andrew Morton <akpm@linux-foundation.org>,
	linux-mips@vger.kernel.org, linux-arch@vger.kernel.org,
	linux-mm@kvack.org, Jiaxun Yang <jiaxun.yang@flygoat.com>,
	Paul Burton <paulburton@kernel.org>,
	Li Xuefeng <lixuefeng@loongson.cn>,
	Yang Tiezhu <yangtiezhu@loongson.cn>,
	Gao Juxin <gaojuxin@loongson.cn>,
	Fuxin Zhang <zhangfx@lemote.com>, Huacai Chen <chenhc@lemote.com>
Subject: [PATCH] MIPS: fix kernel_stack_pointer()
Date: Fri, 29 Jan 2021 12:35:07 +0800	[thread overview]
Message-ID: <20210129043507.30488-1-huangpei@loongson.cn> (raw)

MIPS always save kernel stack pointer in regs[29]

Signed-off-by: Huang Pei <huangpei@loongson.cn>
---
 arch/mips/include/asm/ptrace.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/include/asm/ptrace.h b/arch/mips/include/asm/ptrace.h
index 1e76774b36dd..daf3cf244ea9 100644
--- a/arch/mips/include/asm/ptrace.h
+++ b/arch/mips/include/asm/ptrace.h
@@ -53,7 +53,7 @@ struct pt_regs {
 
 static inline unsigned long kernel_stack_pointer(struct pt_regs *regs)
 {
-	return regs->regs[31];
+	return regs->regs[29];
 }
 
 static inline void instruction_pointer_set(struct pt_regs *regs,
-- 
2.17.1



             reply	other threads:[~2021-01-29  4:59 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-29  4:35 Huang Pei [this message]
2021-02-01 12:23 ` Thomas Bogendoerfer
2021-02-02  1:32   ` Huang Pei
2021-02-03 10:36     ` Thomas Bogendoerfer

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