Re: [Xen-devel] Re: [PATCH] remove _PS0 from the DSDTo

[Jason Kwon <jason.kwon@xxxxxxxxxxxx>]

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@xxxxxxxxxxxxxxxxxxx
> > > > > 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

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