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| author | Michael Holzheu <holzheu@linux.vnet.ibm.com> | 2011-10-30 15:16:42 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 15:16:42 +0100 |
| commit | d38593f9387055566b782d00d38d9a347a96e7d9 (patch) | |
| tree | 7f617f84b8b176a399abc9d6672604a31706b3bf /arch/s390/kernel | |
| parent | [S390] kdump: Initialize vmcoreinfo note at startup (diff) | |
| download | linux-d38593f9387055566b782d00d38d9a347a96e7d9.tar.xz linux-d38593f9387055566b782d00d38d9a347a96e7d9.zip | |
[S390] Export vmcoreinfo note
This patch defines for s390 an ABI defined pointer to the vmcoreinfo note at
a well known address. With this patch tools are able to find this information
in dumps created by stand-alone or hypervisor dump tools.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/setup.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index b5a30412b2e5..63c81de665ec 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -558,6 +558,15 @@ static void __init setup_restart_psw(void) copy_to_absolute_zero(&S390_lowcore.restart_psw, &psw, sizeof(psw)); } +static void __init setup_vmcoreinfo(void) +{ +#ifdef CONFIG_KEXEC + unsigned long ptr = paddr_vmcoreinfo_note(); + + copy_to_absolute_zero(&S390_lowcore.vmcore_info, &ptr, sizeof(ptr)); +#endif +} + #ifdef CONFIG_CRASH_DUMP /* @@ -1022,6 +1031,7 @@ setup_arch(char **cmdline_p) reserve_crashkernel(); setup_memory(); setup_resources(); + setup_vmcoreinfo(); setup_restart_psw(); setup_lowcore(); |