zhenwei pi 26badd13e8 qemu: support Panic Crashloaded event handling ... Pvpanic device supports bit 1 as crashloaded event, it means that guest actually panicked and run kexec to handle error by guest side. Handle crashloaded as a lifecyle event in libvirt. Test case: Guest side: before testing, we need make sure kdump is enabled, 1, build new pvpanic driver (with commit from upstream e0b9a42735f2672ca2764cfbea6e55a81098d5ba 191941692a3d1b6a9614502b279be062926b70f5) 2, insmod new kmod 3, enable crash_kexec_post_notifiers, # echo 1 > /sys/module/kernel/parameters/crash_kexec_post_notifiers 4, trigger kernel panic # echo 1 > /proc/sys/kernel/sysrq # echo c > /proc/sysrq-trigger Host side: 1, build new qemu with pvpanic patches (with commit from upstream 600d7b47e8f5085919fd1d1157f25950ea8dbc11 7dc58deea79a343ac3adc5cadb97215086054c86) 2, build libvirt with this patch 3, handle lifecycle event and trigger guest side panic # virsh event stretch --event lifecycle event 'lifecycle' for domain stretch: Crashed Crashloaded events received: 1 Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>		2020-02-07 14:05:25 +00:00
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libvirt	qemu: support Panic Crashloaded event handling	2020-02-07 14:05:25 +00:00