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Re: [Xen-devel] [PATCH] Fix etherboot option ROM loading



On 29/06/2010 13:33, "James Harper" <james.harper@xxxxxxxxxxxxxxxx> wrote:

> Wouldn't PCI passthrough map through the option ROM on the PCI adapter
> though, negating the need to use gPXE? I'm don't think I've met a
> network adapter in quite a few years that didn't have some form of PXE
> support built in.

Agreed but for some reason when Intel implemented option ROM passthrough
(xen-unstable:18808) they restricted it to mass-storage and
serial-controller devices only (PCI classes 0x1 and 0xc). No idea why. :-)
It obviously shows noone (yet) has wanted to use a pass-through NIC option
ROM! Doubtless this will get picked up and fixed/altered at some point. At
the very least adding NICs to the PCI-class whitelist would seem pretty
harmless....

 -- Keir



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