[SeaBIOS] [RFC PATCH 0/2] Allow RedHat PCI bridges reserve more buses than necessary during init

Gerd Hoffmann kraxel at redhat.com
Mon Jul 24 10:39:33 CEST 2017


On Fri, 2017-07-21 at 13:28 -0400, Kevin O'Connor wrote:
> On Fri, Jul 21, 2017 at 03:15:46PM +0300, Marcel Apfelbaum wrote:
> > On 21/07/2017 13:04, Gerd Hoffmann wrote:
> > > I'd prefer to have a single vendor capability for all resource
> > > allocation hints provided by qemu.
> > 
> > Sure, the capability looking something like:
> > 
> >    [flags: reserve-buses|reserve-IO|reserve-MEM|...]
> >    [extra-buses][IO-size][MEM-size]
> > 
> >    if reserve-buses -> use 'extra-buses' value and so on
> 
> I don't have any objection to using a PCI capability, but I do wonder
> if fw_cfg would be a better fit.  This information is purely qemu ->
> firmware, right?

fw_cfg quickly becomes messy if you want allow different hints per
bridge.

cheers,
  Gerd




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