[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH v11] kvm: notify host when the guest is panicked
From: |
Marcelo Tosatti |
Subject: |
Re: [Qemu-devel] [PATCH v11] kvm: notify host when the guest is panicked |
Date: |
Tue, 30 Oct 2012 23:12:56 -0200 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Thu, Oct 25, 2012 at 11:42:32AM +0800, Hu Tao wrote:
> We can know the guest is panicked when the guest runs on xen.
> But we do not have such feature on kvm.
>
> Another purpose of this feature is: management app(for example:
> libvirt) can do auto dump when the guest is panicked. If management
> app does not do auto dump, the guest's user can do dump by hand if
> he sees the guest is panicked.
>
> We have three solutions to implement this feature:
> 1. use vmcall
> 2. use I/O port
> 3. use virtio-serial.
>
> We have decided to avoid touching hypervisor. The reason why I choose
> choose the I/O port is:
> 1. it is easier to implememt
> 2. it does not depend any virtual device
> 3. it can work when starting the kernel
It has been asked earlier why a simple virtio device is not usable
for this (with no response IIRC).
Also, there is no high level documentation: purpose of the interface,
how a management application should use it, etc.
- [Qemu-devel] [PATCH v11] kvm: notify host when the guest is panicked, Hu Tao, 2012/10/25
- [Qemu-devel] [PATCH v11 2/6] update kernel headers, Hu Tao, 2012/10/25
- [Qemu-devel] [PATCH v11 1/6] start vm after reseting it, Hu Tao, 2012/10/25
- [Qemu-devel] [PATCH v11 3/6] add a new runstate: RUN_STATE_GUEST_PANICKED, Hu Tao, 2012/10/25
- [Qemu-devel] [PATCH v11 5/6] introduce a new qom device to deal with panicked event, Hu Tao, 2012/10/25
- [Qemu-devel] [PATCH v11 4/6] add a new qevent: QEVENT_GUEST_PANICKED, Hu Tao, 2012/10/25
- [Qemu-devel] [PATCH v11 6/6] allower the user to disable pv event support, Hu Tao, 2012/10/25
- Re: [Qemu-devel] [PATCH v11] kvm: notify host when the guest is panicked,
Marcelo Tosatti <=