On Tue, Mar 28, 2017 at 03:51:01AM -0400, Paolo Bonzini wrote: > > > While debugging a kernel issue, I found that QEMU always reboots when an > > x86 triple fault occurs, which complicates debugging. QEMU and libvirt > > have a facility for creating a dump when KVM reports > > KVM_SYSTEM_EVENT_CRASH. So change the VMX triple fault handler to do > > that. This gives user space the ability to decide whether to dump, > > pause, shutdown, or reboot. > > You probably want QEMU's -no-reboot option. > > Triple faults are already reported to userspace with KVM_EXIT_SHUTDOWN, > and it's up to userspace to decide what to do with it. This patch cannot > be applied, because there are guests that do a triple-fault intentionally > in order to reset the machine. Ok. Any idea how to force libvirt to create a dump? It has a 'coredump-destroy' option, but that only seems to work with 'on_crash': https://libvirt.org/formatdomain.html#elementsEvents -- Josh
