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kvm: Add kvm system event crash handler 

KVM kernel can send guest crash events into userspace.
Appropriate guest crash handler is called when kernel guest
crash event received. Guest crash event recognized by a
KVM_SYSTEM_EVENT_CRASH type of system event.

Signed-off-by: Andrey Smetanin <asmetanin@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Andreas Färber <afaerber@suse.de>
Message-Id: <1435924905-8926-11-git-send-email-den@openvz.org>
[Rebase: add lock/unlock iothread around qemu_system_guest_panicked - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Andrey Smetanin 2015-07-03 15:01:43 +03:00 committed by Paolo Bonzini
parent bac05aa9a7
commit 7c207b9046
1 changed files with 6 additions and 0 deletions
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6
kvm-all.c
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@ -1889,6 +1889,12 @@ int kvm_cpu_exec(CPUState *cpu)
qemu_system_reset_request();
ret = EXCP_INTERRUPT;
break;
case KVM_SYSTEM_EVENT_CRASH:
qemu_mutex_lock_iothread();
qemu_system_guest_panicked();
qemu_mutex_unlock_iothread();
ret = 0;
break;
default:
DPRINTF("kvm_arch_handle_exit\n");
ret = kvm_arch_handle_exit(cpu, run);