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riscv: put interrupt entries into .irqentry.text 

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: 7db91e57a0 ("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>
This commit is contained in:
Nam Cao 2023-08-21 16:57:09 +02:00 committed by Greg Kroah-Hartman
parent 7aa18f77e1
commit a08b414d1e
1 changed files with 2 additions and 0 deletions
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arch/riscv/kernel/entry.S
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@ -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