On Mon, 2013-03-18 at 15:16 +0000, Matt Fleming wrote:
>
> See,
>
> commit 53b87cf0 ("x86, mm: Include the entire kernel memory map in trampoline_pgd"),
> commit 185034e7 ("x86, efi: 1:1 pagetable mapping for virtual EFI calls"),
> commit da5a108d05b4 ("x86/kernel: remove tboot 1:1 page table creation code") and
> commit bd52276fa1d4 ("x86-64/efi: Use EFI to deal with platform wall clock (again)")
>
> and the two revert commits from Linus, be354f40 and 11520e5e.
Thanks. That seems like a rather scary approach. I was thinking of just
setting up a dedicated kernel thread for making runtime services calls,
and giving it some "userspace" page tables with a 1:1 mapping. No
messing around with %cr3 directly.
--
dwmw2
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