[PATCH v17 01/10] x86: kdump: replace the hard-coded alignment with macro CRASH_ALIGN

Zhen Lei
2021-12-10T06:56:47Z

From: Chen Zhou <chenzhou10@huawei.com>

Move CRASH_ALIGN to header asm/kexec.h for later use.

Suggested-by: Dave Young <dyoung@redhat.com>
Suggested-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Chen Zhou <chenzhou10@huawei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Tested-by: John Donnelly <John.p.donnelly@oracle.com>
Tested-by: Dave Kleikamp <dave.kleikamp@oracle.com>
---
arch/x86/include/asm/kexec.h | 3 +++
arch/x86/kernel/setup.c | 3 ---
2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/include/asm/kexec.h b/arch/x86/include/asm/kexec.h
index 11b7c06e2828c30..3a22e65262aa70b 100644
--- a/arch/x86/include/asm/kexec.h
+++ b/arch/x86/include/asm/kexec.h
@@ -18,6 +18,9 @@

# define KEXEC_CONTROL_CODE_MAX_SIZE 2048

+/* 16M alignment for crash kernel regions */
+#define CRASH_ALIGN SZ_16M
+
#ifndef __ASSEMBLY__

#include <linux/string.h>
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 6a190c7f4d71b05..5cc60996eac56d6 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -392,9 +392,6 @@ static void __init memblock_x86_reserve_range_setup_data(void)

#ifdef CONFIG_KEXEC_CORE

-/* 16M alignment for crash kernel regions */
-#define CRASH_ALIGN SZ_16M
-
/*
* Keep the crash kernel below this limit.
*
--
2.25.1