diff options
author | Vaughan Cao <vaughan.cao@oracle.com> | 2013-08-16 16:10:56 +0800 |
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committer | Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2013-08-20 15:37:03 -0400 |
commit | 669b0ae961e87c824233475e987b2d39996d4849 (patch) | |
tree | fafef462ed8610212fe86533daa075281ee5879a /net/rose/rose_route.c | |
parent | ee0726407feaf504dff304fb603652fb2d778b42 (diff) |
xen/pvhvm: Initialize xen panic handler for PVHVM guests
kernel use callback linked in panic_notifier_list to notice others when panic
happens.
NORET_TYPE void panic(const char * fmt, ...){
...
atomic_notifier_call_chain(&panic_notifier_list, 0, buf);
}
When Xen becomes aware of this, it will call xen_reboot(SHUTDOWN_crash) to
send out an event with reason code - SHUTDOWN_crash.
xen_panic_handler_init() is defined to register on panic_notifier_list but
we only call it in xen_arch_setup which only be called by PV, this patch is
necessary for PVHVM.
Without this patch, setting 'on_crash=coredump-restart' in PVHVM guest config
file won't lead a vmcore to be generate when the guest panics. It can be
reproduced with 'echo c > /proc/sysrq-trigger'.
Signed-off-by: Vaughan Cao <vaughan.cao@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Acked-by: Joe Jin <joe.jin@oracle.com>
Diffstat (limited to 'net/rose/rose_route.c')
0 files changed, 0 insertions, 0 deletions