From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Paul Burton <paul.burton@imgtec.com>,
Tony Wu <tung7970@gmail.com>,
linux-mips@linux-mips.org, Ralf Baechle <ralf@linux-mips.org>
Subject: [PATCH 4.4 10/91] MIPS: Handle microMIPS jumps in the same way as MIPS32/MIPS64 jumps
Date: Fri, 10 Mar 2017 10:08:09 +0100 [thread overview]
Message-ID: <20170310083901.244542169@linuxfoundation.org> (raw)
In-Reply-To: <20170310083900.730556986@linuxfoundation.org>
4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Paul Burton <paul.burton@imgtec.com>
commit 096a0de427ea333f56f0ee00328cff2a2731bcf1 upstream.
is_jump_ins() checks for plain jump ("j") instructions since commit
e7438c4b893e ("MIPS: Fix sibling call handling in get_frame_info") but
that commit didn't make the same change to the microMIPS code, leaving
it inconsistent with the MIPS32/MIPS64 code. Handle the microMIPS
encoding of the jump instruction too such that it behaves consistently.
Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Fixes: e7438c4b893e ("MIPS: Fix sibling call handling in get_frame_info")
Cc: Tony Wu <tung7970@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14533/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/mips/kernel/process.c | 2 ++
1 file changed, 2 insertions(+)
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -289,6 +289,8 @@ static inline int is_jump_ins(union mips
return 0;
}
+ if (ip->j_format.opcode == mm_j32_op)
+ return 1;
if (ip->j_format.opcode == mm_jal32_op)
return 1;
if (ip->r_format.opcode != mm_pool32a_op ||
prev parent reply other threads:[~2017-03-10 9:11 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20170310083900.730556986@linuxfoundation.org>
2017-03-10 9:08 ` [PATCH 4.4 02/91] MIPS: BCM47XX: Fix button inversion for Asus WL-500W Greg Kroah-Hartman
2017-03-10 9:08 ` [PATCH 4.4 03/91] MIPS: OCTEON: Fix copy_from_user fault handling for large buffers Greg Kroah-Hartman
2017-03-10 9:08 ` [PATCH 4.4 04/91] MIPS: Lantiq: Keep ethernet enabled during boot Greg Kroah-Hartman
2017-03-10 9:08 ` [PATCH 4.4 05/91] MIPS: Clear ISA bit correctly in get_frame_info() Greg Kroah-Hartman
2017-03-10 9:08 ` [PATCH 4.4 06/91] MIPS: Prevent unaligned accesses during stack unwinding Greg Kroah-Hartman
2017-03-10 9:08 ` [PATCH 4.4 07/91] MIPS: Fix get_frame_info() handling of microMIPS function size Greg Kroah-Hartman
2017-03-10 9:08 ` [PATCH 4.4 08/91] MIPS: Fix is_jump_ins() handling of 16b microMIPS instructions Greg Kroah-Hartman
2017-03-10 9:08 ` [PATCH 4.4 09/91] MIPS: Calculate microMIPS ra properly when unwinding the stack Greg Kroah-Hartman
2017-03-10 9:08 ` Greg Kroah-Hartman [this message]
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