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Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform devic
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization |
Date: |
Thu, 13 Jun 2013 14:02:43 -0400 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130514 Thunderbird/17.0.6 |
Il 13/06/2013 13:44, Ian Campbell ha scritto:
> On Thu, 2013-06-13 at 18:33 +0100, Stefano Stabellini wrote:
>> On Thu, 13 Jun 2013, Paul Durrant wrote:
>>> The xen-platform device should be initialized by the Xen toolstack by
>>> passing the appropriate -device argument on the command line.
>>>
>>> Signed-off-by: Paul Durrant <address@hidden>
>>
>> This patch is problematic because we can't know for sure the version of
>> upstream QEMU that is going to be used with Xen.
>> If we apply this patch and QEMU 1.5 is going to be used with Xen 4.2,
>> guests won't be able to use PV drivers.
>
> Is the right answer a lever to disable, rather than enable, it?
>
> A workaround for the situation you envisage is to use the
> device_model_args config option, not ideal though.
I think the right solution for this is to move towards using the normal
"-M pc" machine. libxl can simply use "-M pc -machine accel=xen -device
xen-platform-pv"; older versions that use the xenfv machine will still work.
And if you do this, you will also get the benefit of versioned machine
types.
Paolo
- [Qemu-devel] [PATCH] Remove hardcoded xen-platform device initialization, Paul Durrant, 2013/06/13
- Re: [Qemu-devel] [PATCH] Remove hardcoded xen-platform device initialization, Stefano Stabellini, 2013/06/13
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Ian Campbell, 2013/06/13
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization,
Paolo Bonzini <=
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Paul Durrant, 2013/06/14
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Paul Durrant, 2013/06/14
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Paolo Bonzini, 2013/06/14
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Paul Durrant, 2013/06/14
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Paolo Bonzini, 2013/06/14
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Paul Durrant, 2013/06/14
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Stefano Stabellini, 2013/06/18
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Paolo Bonzini, 2013/06/18
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Stefano Stabellini, 2013/06/18
- Re: [Qemu-devel] [Xen-devel] [PATCH] Remove hardcoded xen-platform device initialization, Andreas Färber, 2013/06/18