[PATCH 2/5] x86/setup/crash: Remove alignment variable

From: Borislav Petkov
Date: Thu Oct 15 2015 - 04:21:49 EST


From: Borislav Petkov <bp@xxxxxxx>

Use a macro instead. No functionality change.

Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxxxxxx>
Cc: Dave Young <dyoung@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: jerry_hoemann@xxxxxx
Cc: Jiri Kosina <jkosina@xxxxxxx>
Cc: Joerg Roedel <jroedel@xxxxxxx>
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Mark Salter <msalter@xxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: WANG Chao <chaowang@xxxxxxxxxx>
Cc: x86-ml <x86@xxxxxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
---
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 fd9e178aa890..ea086dd8e821 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;
--
2.3.5

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