Re: [PATCH 1/2] x86/efi: Map EFI memmap entries in-order at runtime

From: Matthew Garrett
Date: Sun Sep 27 2015 - 14:30:25 EST

On Sun, Sep 27, 2015 at 09:30:48AM -0700, Andy Lutomirski wrote:
> On Sep 26, 2015 1:19 PM, "H. Peter Anvin" <hpa@xxxxxxxxx> wrote:
> >
> > Sadly a lot of firmware is known to fail in that configuration :( That was very much our guest choice.
> >
> Why can't we map everything completely 1:1 (VA = PA) and call the
> setVA thing but pass it literally the identity.

Last time I tried this I found that some firmware makes assumptions
about having high addresses.

Matthew Garrett | mjg59@xxxxxxxxxxxxx
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