From d38593f9387055566b782d00d38d9a347a96e7d9 Mon Sep 17 00:00:00 2001 From: Michael Holzheu Date: Sun, 30 Oct 2011 15:16:42 +0100 Subject: [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 Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/setup.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/s390/kernel') 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(); -- cgit v1.2.1