Re: [PATCH -v2 0/4] EFI 1:1 mapping
From: Borislav Petkov
Date: Wed Jun 19 2013 - 13:50:21 EST
On Wed, Jun 19, 2013 at 12:38:24PM -0500, H. Peter Anvin wrote:
> I thought that was the plan?
Well, currently if I'm booted with "efi=1:1_map" I'm creating only the
1:1 mapping in ->trampoline_pgd and switching the pagetable only then.
Otherwise, I'm using the high, ioremapped mappings - i.e., what we have
I guess I can sync the kernel address space into ->trampoline_pgd after
having created the 1:1 mappings and always switch the pagetable later,
after we've done SetVirtualAddressMap.
Which should take care of the EFI boot stub issue too, as I can define
another set of efi_callX which switch the pagetable unconditionally.
Let me see how that pans out...
Sent from a fat crate under my desk. Formatting is fine.
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