diff mbox series

[v18,07/17] x86/setup: Eliminate a magic number in reserve_crashkernel()

Message ID 20211222130820.1754-8-thunder.leizhen@huawei.com (mailing list archive)
State New, archived
Headers show
Series support reserving crashkernel above 4G on arm64 kdump | expand

Commit Message

Zhen Lei Dec. 22, 2021, 1:08 p.m. UTC 
From: Chen Zhou <chenzhou10@huawei.com>

Replace '(1ULL << 32)' with CRASH_ADDR_LOW_MAX to improve readability,
they are equal.

Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
---
 arch/x86/kernel/setup.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 52aa925877ca787..abff57ffbe92884 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -523,7 +523,7 @@  static void __init reserve_crashkernel(void)
 	}
 
 #ifdef CONFIG_X86_64
-	if (crash_base >= (1ULL << 32)) {
+	if (crash_base >= CRASH_ADDR_LOW_MAX) {
 		/*
 		 * Ensure that at least 256M extra low memory is allocated for
 		 * DMA buffers and swiotlb, if low memory size is not specified.