linux-kernel - [PATCH v1] LoongArch: Use unsigned long for _end and

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Message-ID: <20251125063507.32177-1-yangtiezhu@loongson.cn>
Date: Tue, 25 Nov 2025 14:35:07 +0800
From: Tiezhu Yang <yangtiezhu@...ngson.cn>
To: Huacai Chen <chenhuacai@...nel.org>
Cc: loongarch@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH v1] LoongArch: Use unsigned long for _end and _text

It is better to use unsigned long rather than long for _end and _text
to calculate the kernel length.

Cc: stable@...r.kernel.org # v6.3+
Fixes: e5f02b51fa0c ("LoongArch: Add support for kernel address space layout randomization (KASLR)")
Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 arch/loongarch/kernel/relocate.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/loongarch/kernel/relocate.c b/arch/loongarch/kernel/relocate.c
index b5e2312a2fca..76abbb8d2931 100644
--- a/arch/loongarch/kernel/relocate.c
+++ b/arch/loongarch/kernel/relocate.c
@@ -183,7 +183,7 @@ static inline void __init *determine_relocation_address(void)
 	if (kaslr_disabled())
 		return destination;
 
-	kernel_length = (long)_end - (long)_text;
+	kernel_length = (unsigned long)_end - (unsigned long)_text;
 
 	random_offset = get_random_boot() << 16;
 	random_offset &= (CONFIG_RANDOMIZE_BASE_MAX_OFFSET - 1);
@@ -232,7 +232,7 @@ unsigned long __init relocate_kernel(void)
 	early_memunmap(cmdline, COMMAND_LINE_SIZE);
 
 	if (random_offset) {
-		kernel_length = (long)(_end) - (long)(_text);
+		kernel_length = (unsigned long)(_end) - (unsigned long)(_text);
 
 		/* Copy the kernel to it's new location */
 		memcpy(location_new, _text, kernel_length);
-- 
2.42.0