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: 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>

diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index 3d11aa3af105e0aa044011c01e94e49e689ed2a2..278d01d2911fd512925c644057654964b9eaef61 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