Re: [PATCH -v2 0/4] EFI 1:1 mapping

Borislav Petkov
2013-06-19T13:25:29Z

On Wed, Jun 19, 2013 at 03:04:34PM +0200, Ingo Molnar wrote:
> Do we know why?

Well, according to mjg59 some Macs break if we don't give them a map
which uses high addresses.

I can imagine flipping the meaning of this option to be on by default
and "efi=no_11_map" to disable the 1:1 map for those Macs.

> A bug I suspect?

Probably. The problem is, it is very hard to debug the boot stub that
early. And of course, I can't reproduce it in qemu :(. If only I had a
hardware debugger...

> But once it works reliably we can enable it, right?

It's all the same to me - I hate EFI with passion so whatever people
agree upon, I'll do it.

--
Regards/Gruss,
Boris.

Sent from a fat crate under my desk. Formatting is fine.
--