Re: [Xen-devel] AMD GPU passthrough in Xen

[Gordan Bobic <gordan@xxxxxxxxxx>]

On 09/22/2014 03:31 PM, Peter Kay wrote:
> On 22 September 2014 13:38:28 BST, Sander Eikelenboom <linux@xxxxxxxxxxxxxx> 
> wrote:
>
> > Another interesting question/aspect would be qemu-traditional (with
> > rombios) or
> > "upstream" (with seabios) ?
> Point, although I didn't think this was generally an option in 4.2?
>
> Certainly I've found upstream to be functional (using a Quadro), but a less 
> stable domU overall
Do you happen to know if the recent KVM/QEMU provides a feature to limit 
the amount of memory below 4GB to assign to the guest? Or provide a 
custom e820 map? To work around a hardware bug I have to somehow make 
sure that everything between 2.5GB and 4GB is reserved and untouchable.
Gordan


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