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riscv: put interrupt entries into .irqentry.text
author
Nam Cao
<namcaov@gmail.com>
Mon, 21 Aug 2023 14:57:09 +0000
(16:57 +0200)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Tue, 28 Nov 2023 17:20:13 +0000
(17:20 +0000)
commit
87615e95f6f9ccd36d4a3905a2d87f91967ea9d2
upstream.
The interrupt entries are expected to be in the .irqentry.text section.
For example, for kprobes to work properly, exception code cannot be
probed; this is ensured by blacklisting addresses in the .irqentry.text
section.
Fixes:
7db91e57a0ac
("RISC-V: Task implementation")
Signed-off-by: Nam Cao <namcaov@gmail.com>
Link:
https://lore.kernel.org/r/20230821145708.21270-1-namcaov@gmail.com
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/riscv/kernel/entry.S
patch
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diff --git
a/arch/riscv/kernel/entry.S
b/arch/riscv/kernel/entry.S
index
3d11aa3
..
278d01d
100644
(file)
--- a/
arch/riscv/kernel/entry.S
+++ b/
arch/riscv/kernel/entry.S
@@
-16,6
+16,8
@@
#include <asm/errata_list.h>
#include <linux/sizes.h>
+ .section .irqentry.text, "ax"
+
SYM_CODE_START(handle_exception)
/*
* If coming from userspace, preserve the user thread pointer and load