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author | 2006-01-09 20:51:50 -0800 | |
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committer | 2006-01-10 08:01:28 -0800 | |
commit | 4ae362be509306eafa6441603686d33fefe321c1 (patch) | |
tree | d16a59e9c85945a6cc4a0945c80c0ecd97815923 /fs | |
parent | [PATCH] kdump: x86_64 save cpu registers upon crash (diff) | |
download | linux-4ae362be509306eafa6441603686d33fefe321c1.tar.gz linux-4ae362be509306eafa6441603686d33fefe321c1.tar.bz2 linux-4ae362be509306eafa6441603686d33fefe321c1.zip |
[PATCH] kdump: read previous kernel's memory
- Moving the crash_dump.c file to arch dependent part as kmap_atomic_pfn is
specific to i386 and highmem may not exist in other archs.
- Use ioremap for x86_64 to map the previous kernel memory.
- In copy_oldmem_page(), we now directly copy to the user/kernel buffer and
avoid the unneccesary copy to a kmalloc'd page.
Signed-off-by: Rachita Kothiyal <rachita@in.ibm.com>
Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/proc/vmcore.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c index 3b2e7b69e63a..5378d7c78419 100644 --- a/fs/proc/vmcore.c +++ b/fs/proc/vmcore.c @@ -35,6 +35,9 @@ static size_t elfcorebuf_sz; /* Total size of vmcore file. */ static u64 vmcore_size; +/* Stores the physical address of elf header of crash image. */ +unsigned long long elfcorehdr_addr = ELFCORE_ADDR_MAX; + struct proc_dir_entry *proc_vmcore = NULL; /* Reads a page from the oldmem device from given offset. */ |