Re: [PATCH] x86, efi: 1:1 pagetable mapping for virtual EFIcalls

[Jan Beulich]

>>> On 06.09.12 at 19:07, "H. Peter Anvin" <hpa@xxxxxxxxx> wrote:
> Anyone care to refresh my memory why we can't use the "global" 
> 1:1+kernel map, possibly with some improvements (which would benefit the 
> users of those maps too)?  With that I mean initial_page_map on i386 and 
> trampoline_pgd on x86-64...

I don't think you want anything inserted in the low part of those
(kernel-only) page tables, not even transiently.

Jan

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