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Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked
From: |
Avi Kivity |
Subject: |
Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked |
Date: |
Tue, 13 Mar 2012 10:54:14 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120216 Thunderbird/10.0.1 |
On 03/13/2012 08:44 AM, Wen Congyang wrote:
> 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.
You can use virtio-serial with any guest that has a driver. There are
drivers available for Windows.
> 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.
>
The hypercall implementation must exist in the hypervisor.
virtio-serial is used by the guest agent, so it's likely to be
availalble in all cloud or data center deployments.
--
error compiling committee.c: too many arguments to function
- Re: [Qemu-devel] [RESEND][PATCH 2/2 v3] deal with guest panicked event, (continued)
- Re: [Qemu-devel] [RESEND][PATCH 2/2 v3] deal with guest panicked event, Daniel P. Berrange, 2012/03/08
- Re: [Qemu-devel] [RESEND][PATCH 2/2 v3] deal with guest panicked event, Avi Kivity, 2012/03/08
- Re: [Qemu-devel] [RESEND][PATCH 2/2 v3] deal with guest panicked event, Daniel P. Berrange, 2012/03/08
- Re: [Qemu-devel] [RESEND][PATCH 2/2 v3] deal with guest panicked event, Marcelo Tosatti, 2012/03/09
- Re: [Qemu-devel] [RESEND][PATCH 2/2 v3] deal with guest panicked event, Wen Congyang, 2012/03/11
Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Avi Kivity, 2012/03/08
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Wen Congyang, 2012/03/08
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Daniel P. Berrange, 2012/03/13
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Avi Kivity, 2012/03/13
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Wen Congyang, 2012/03/14
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Avi Kivity, 2012/03/14
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Wen Congyang, 2012/03/14
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Avi Kivity, 2012/03/14
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Wen Congyang, 2012/03/14
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Avi Kivity, 2012/03/14
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Gleb Natapov, 2012/03/14
- Re: [Qemu-devel] [PATCH 0/2 v3] kvm: notify host when guest panicked, Avi Kivity, 2012/03/14