Re: [PATCHv3] virtio-spec: 64 bit features, used/avail event, fixes

On Wed, Aug 03, 2011 at 06:15:33PM +0200, Gerd Hoffmann wrote:

  Hi,

quoted

E.g. with 32 bridges, and 32 devices behind each one,
the available 64K space gets us only 64 bytes per device.

15 bridges (with io window enabled) max, the smallest io window you
can assign to a bridge is 4k, and you need some space for the
devices on the root bus ...

cheers,
  Gerd

Hmm, wait, we could go 32 bit, then we are not limited to 32
bridges anymore, right? Does our bios support that?


-- 
MST