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Message-Id: <20230821144516.20487-1-namcaov@gmail.com>
Date: Mon, 21 Aug 2023 16:45:17 +0200
From: Nam Cao <namcaov@...il.com>
To: Paul Walmsley <paul.walmsley@...ive.com>,
Palmer Dabbelt <palmer@...belt.com>,
Albert Ou <aou@...s.berkeley.edu>,
linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: Nam Cao <namcaov@...il.com>
Subject: [PATCH] riscv: put interrupt entries into .irqentry.text
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.
Signed-off-by: Nam Cao <namcaov@...il.com>
---
arch/riscv/kernel/entry.S | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/riscv/kernel/entry.S b/arch/riscv/kernel/entry.S
index 143a2bb3e697..d7dd9030df3f 100644
--- a/arch/riscv/kernel/entry.S
+++ b/arch/riscv/kernel/entry.S
@@ -14,6 +14,8 @@
#include <asm/asm-offsets.h>
#include <asm/errata_list.h>
+ .section .irqentry.text, "ax"
+
SYM_CODE_START(handle_exception)
/*
* If coming from userspace, preserve the user thread pointer and load
--
2.34.1
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