On 21/07/2017 20:28, 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 onI 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?
Hi Kevin,
Right, but theoretically speaking a guest OS driver could also get the hint on hotplug, or simply because the OS chooses to re-assign resources on its own.
A while ago we discussed the fw_cfg option, but Gerd preferred the vendor capability, and since the capability looked cleaner Aleksandr opted for it.
He will send V2 soon together with the QEMU counterpart feature.
Thanks, Marcel
-Kevin