On Fri, Sep 14, 2012 at 09:37:03AM +0200, Gerd Hoffmann wrote:
> On 09/13/12 22:12, Jason Baron wrote:
> > + if (ram_size >= 0xe0000000) {
> > + above_4g_mem_size = ram_size - 0xe0000000;
> > + below_4g_mem_size = 0xe0000000;
>
> We should make the hole larger to get more pci i/o address space below
> 4G, especially as q35 needs a good chunk of it for mmconfig.
>
> I think at least 0xc0000000, maybe even 0xb0000000. The later would
> allow to place mmconfig @ 0xb0000000, one big 512MB pci bar @ 0xc0000000
> (think gfx card pass-through) and all the remaining little stuff above
> 0xe0000000.
>
> cheers,
> Gerd
>
>
Ok, I had played with increasing the pci hole (and corresponding dsdt
table changes), I can try going to a bigger size as you suggest.
Thanks,
-Jason
