Commit-ID: 606134f77ce22997fd2800d5937698d85c6990d9
Gitweb: http://git.kernel.org/tip/606134f77ce22997fd2800d5937698d85c6990d9
Author: Borislav Petkov <bp@xxxxxxx>
AuthorDate: Mon, 19 Oct 2015 11:17:44 +0200
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 21 Oct 2015 11:10:56 +0200
x86/setup/crash: Remove alignment variable
Use a macro instead. No functionality change.
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Reviewed-by: Dave Young <dyoung@xxxxxxxxxx>
Reviewed-by: Joerg Roedel <jroedel@xxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: H. Peter Anvin <hpa@xxxxxxxxx>
Cc: Jiri Kosina <jkosina@xxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Mark Salter <msalter@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: WANG Chao <chaowang@xxxxxxxxxx>
Cc: jerry_hoemann@xxxxxx
Link: http://lkml.kernel.org/r/1445246268-26285-5-git-send-email-bp@xxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
arch/x86/kernel/setup.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index fd9e178..ea086dd 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -480,6 +480,9 @@ static void __init memblock_x86_reserve_range_setup_data(void)
#ifdef CONFIG_KEXEC_CORE
+/* 16M alignment for crash kernel regions */
+#define CRASH_ALIGN (16 << 20)
+
/*
* Keep the crash kernel below this limit. On 32 bits earlier kernels
* would limit the kernel to the low 512 MiB due to mapping restrictions.
@@ -496,7 +499,6 @@ static void __init memblock_x86_reserve_range_setup_data(void)
static int __init reserve_crashkernel_low(void)
{
#ifdef CONFIG_X86_64
- const unsigned long long alignment = 16<<20; /* 16M */
unsigned long long low_base = 0, low_size = 0;
unsigned long total_low_mem;
unsigned long long base;
@@ -525,7 +527,7 @@ static int __init reserve_crashkernel_low(void)
return 0;
}
- low_base = memblock_find_in_range(low_size, 1ULL << 32, low_size, alignment);
+ low_base = memblock_find_in_range(low_size, 1ULL << 32, low_size, CRASH_ALIGN);
if (!low_base) {
pr_err("Cannot reserve %ldMB crashkernel low memory, please try smaller size.\n",
(unsigned long)(low_size >> 20));
@@ -548,7 +550,6 @@ static int __init reserve_crashkernel_low(void)
static void __init reserve_crashkernel(void)
{
- const unsigned long long alignment = 16<<20; /* 16M */
unsigned long long total_mem;
unsigned long long crash_size, crash_base;
bool high = false;
@@ -572,10 +573,10 @@ static void __init reserve_crashkernel(void)
/*
* kexec want bzImage is below CRASH_KERNEL_ADDR_MAX
*/
- crash_base = memblock_find_in_range(alignment,
+ crash_base = memblock_find_in_range(CRASH_ALIGN,
high ? CRASH_ADDR_HIGH_MAX
: CRASH_ADDR_LOW_MAX,
- crash_size, alignment);
+ crash_size, CRASH_ALIGN);
if (!crash_base) {
pr_info("crashkernel reservation failed - No suitable area found.\n");
return;
--
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