Re: Re: [PATCH] remove _PS0 from the DSDTo

[Jason Kwon <jason.kwon@ericsson.com>]

On 03/17/2011 12:15 PM, Stefano Stabellini wrote:
> On Thu, 17 Mar 2011, Jason Kwon wrote:
>> On 03/17/2011 11:40 AM, Stefano Stabellini wrote:
>>> On Thu, 17 Mar 2011, Jason Kwon wrote:
>>>> Stefano Stabellini wrote:
>>>>> On Mon, 28 Feb 2011, Paolo Bonzini wrote:
>>>>>> On 02/28/2011 04:33 PM, Stefano Stabellini wrote:
>>>>>>> However there is a simple workaround for it: just disable acpi in the
>>>>>>> config file of the VM.
>>>>>> I think recent Windows versions (Vista and newer) do not boot at all
>>>>>> without ACPI.
>>>>> I am not suggesting to disable ACPI altogether. I am just saying that
>>>>> the only way to get a recent Linux HVM guest to drive a VF is to disable
>>>>> ACPI, unfortunately.
>>>>>
>>>>> _______________________________________________
>>>>> Xen-devel mailing list
>>>>> Xen-devel@lists.xensource.com
>>>>> http://lists.xensource.com/xen-devel
>>>>>
>>>> Hello,
>>>>
>>>> Has this hvmloader patch been finalized?  I updated to Xen 4.1 rc7/Dom0
>>>> 2.6.32.32, and saw that the register_slot ACPI fixes were in the Dom0
>>>> kernel, but not this hvmloader change.  I previously tested this patch
>>>> on Xen 4.1 rc4 and had success with it when booting linux guests.
>>> we are trying to fix this on the Linux kernel side, we have two patches
>>> waiting to be applied:
>>>
>>> https://lkml.org/lkml/2011/2/28/296
>>> https://lkml.org/lkml/2011/3/8/212
>>>
>> Thanks Stefano, I missed the second kernel patch.  Just to clarify,
>> should these patches be applied to Dom0 or the guest kernel (or both)?
>
> the guest's kernel
Does this mean VF passthrough will not be supported for guests running 
kernels older than 2.6.39 (or whichever kernel incorporates these 
patches)?  I was happy with the hvmloader patch, in that it allowed me 
to use VF passthrough with older kernels.

Jason