linux-kernel - [PATCH v2 2/3] x86/crash: use SZ_1M macro instead of hardcoded value

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Date: Tue,  2 Jan 2024 22:49:04 +0800
From: Yuntao Wang <ytcoode@...il.com>
To: linux-kernel@...r.kernel.org,
	kexec@...ts.infradead.org,
	x86@...nel.org
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Baoquan He <bhe@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	Dave Young <dyoung@...hat.com>,
	Hari Bathini <hbathini@...ux.ibm.com>,
	Sourabh Jain <sourabhjain@...ux.ibm.com>,
	Takashi Iwai <tiwai@...e.de>,
	Yuntao Wang <ytcoode@...il.com>
Subject: [PATCH v2 2/3] x86/crash: use SZ_1M macro instead of hardcoded value

Use SZ_1M macro instead of hardcoded 1<<20 to make code more readable.

Signed-off-by: Yuntao Wang <ytcoode@...il.com>
Acked-by: Baoquan He <bhe@...hat.com>
---
 arch/x86/kernel/crash.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/crash.c b/arch/x86/kernel/crash.c
index 792231a56d11..249b5876e7ec 100644
--- a/arch/x86/kernel/crash.c
+++ b/arch/x86/kernel/crash.c
@@ -170,7 +170,7 @@ static int elf_header_exclude_ranges(struct crash_mem *cmem)
 	int ret = 0;
 
 	/* Exclude the low 1M because it is always reserved */
-	ret = crash_exclude_mem_range(cmem, 0, (1<<20)-1);
+	ret = crash_exclude_mem_range(cmem, 0, SZ_1M - 1);
 	if (ret)
 		return ret;
 
-- 
2.43.0