[PATCH] x86: do not enable efi boot for sgi uv machine

[Alex Thorlton]

On Tue, May 27, 2014 at 11:28:16AM +0800, Dave Young wrote:
> > > Well, we did find the bug in a combined debug session and SGI will be
> > > issuing a fix soon. I don't know whether any quirk will be needed for
> > > systems which don't have the fix - I guess that's something for SGI
> > > people to decide. CCed and leaving in the rest for reference.
> > > 
> > > @Alex, Russ: this is about using kexec on UEFI boxes.
> > 
> > Thanks for the heads up.  Our bios made an assumption about
> > mapping that was valid with the old mapping scheme but not
> > with the new.  Fortunately the fix will work with both old
> > and new kernels, so the fix can be added in the next bios
> > update.  But we still have to be careful when removing the
> > quirk, to avoid someone trying a new kernel with old bios
> > and not being able to boot.
> 
> The quirk will quirk out all uv system, will SGI people provide a patch
> to only add quirk for old firmware version or just removing the quirk
> after the update is out?

Yes - I'm working on that now.  I'll make sure you're copied on the
patch when I do get it all worked out.

> Thanks
> Dave