diff options
| author |  Alexander Nyberg <alexn@telia.com>
| 2005-06-25 14:58:26 -0700 |
|---|---|---|
| committer |  Linus Torvalds <torvalds@ppc970.osdl.org>
| 2005-06-25 16:24:54 -0700 |
| commit | 6e274d144302068a00794ec22e73520c0615cb6f (patch) | |
| tree | f7ea59ea47d3c5676fbac8d39e8deaa1f94146ae /arch/x86_64 | |
| parent | [PATCH] kdump: sysrq trigger mechanism for kexec based crashdumps (diff) | |
| download | linux-6e274d144302068a00794ec22e73520c0615cb6f.tar.gz linux-6e274d144302068a00794ec22e73520c0615cb6f.tar.bz2 linux-6e274d144302068a00794ec22e73520c0615cb6f.zip | |
[PATCH] kdump: Use real pt_regs from exception
Makes kexec_crashdump() take a pt_regs * as an argument. This allows to
get exact register state at the point of the crash. If we come from direct
panic assertion NULL will be passed and the current registers saved before
crashdump.
This hooks into two places:
die(): check the conditions under which we will panic when calling
do_exit and go there directly with the pt_regs that caused the fatal
fault.
die_nmi(): If we receive an NMI lockup while in the kernel use the
pt_regs and go directly to crash_kexec(). We're probably nested up badly
at this point so this might be the only chance to escape with proper
information.
Signed-off-by: Alexander Nyberg <alexn@telia.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/x86_64')
| -rw-r--r-- | arch/x86_64/kernel/crash.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/crash.c b/arch/x86_64/kernel/crash.c index 6183bcb85257..d7fa4248501c 100644 --- a/arch/x86_64/kernel/crash.c +++ b/arch/x86_64/kernel/crash.c @@ -22,7 +22,7 @@ note_buf_t crash_notes[NR_CPUS]; -void machine_crash_shutdown(void) +void machine_crash_shutdown(struct pt_regs *regs) { /* This function is only called after the system * has paniced or is otherwise in a critical state. |