At 03/12/2012 06:33 PM, Avi Kivity Wrote: > On 03/12/2012 11:04 AM, Wen Congyang wrote: >> Do you have any other comments about this patch? >> > > Not really, but I'm not 100% convinced the patch is worthwhile. It's > likely to only be used by Linux, which has kexec facilities, and you can > put talk to management via virtio-serial and describe the crash in more > details than a simple hypercall.
Hmm, can we use virtio-serial to talk with not-linux OS? I guess the answer is no. If so, virtio-serial is also used by linux. Another problem is: virtio-serial is available on many deployed versions but the guest must have virtio-serial device. So we cannot know the guest is panicked if it does not have virtio-serial device while the hypercall does not depend on any device. Thanks Wen Congyang
