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

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


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