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
