From: Magnus Damm <magnus.damm@gmail.com>
To: linux-sh@vger.kernel.org
Subject: [PATCH] sh: add dynamic crash base address support
Date: Thu, 09 Oct 2008 09:42:55 +0000 [thread overview]
Message-ID: <20081009094255.6471.16563.sendpatchset@rx1.opensource.se> (raw)
From: Magnus Damm <damm@igel.co.jp>
Add support for dynamic crash kernel base address.
Signed-off-by: Magnus Damm <damm@igel.co.jp>
---
arch/sh/kernel/setup.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
--- 0001/arch/sh/kernel/setup.c
+++ work/arch/sh/kernel/setup.c 2008-10-09 16:54:51.000000000 +0900
@@ -147,6 +147,7 @@ static void __init reserve_crashkernel(v
{
unsigned long long free_mem;
unsigned long long crash_size, crash_base;
+ void *vp;
int ret;
free_mem = ((unsigned long long)max_low_pfn - min_low_pfn) << PAGE_SHIFT;
@@ -155,12 +156,14 @@ static void __init reserve_crashkernel(v
&crash_size, &crash_base);
if (ret = 0 && crash_size) {
if (crash_base <= 0) {
- printk(KERN_INFO "crashkernel reservation failed - "
- "you have to specify a base address\n");
- return;
- }
-
- if (reserve_bootmem(crash_base, crash_size,
+ vp = alloc_bootmem_nopanic(crash_size);
+ if (!vp) {
+ printk(KERN_INFO "crashkernel allocation "
+ "failed\n");
+ return;
+ }
+ crash_base = __pa(vp);
+ } else if (reserve_bootmem(crash_base, crash_size,
BOOTMEM_EXCLUSIVE) < 0) {
printk(KERN_INFO "crashkernel reservation failed - "
"memory is in use\n");
reply other threads:[~2008-10-09 9:42 UTC|newest]
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