Messages in this thread | | | Date | Fri, 6 Nov 2015 14:24:47 +0100 | From | Borislav Petkov <> | Subject | Re: [GIT PULL] x86/mm changes for v4.4 |
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On Fri, Nov 06, 2015 at 01:09:48PM +0000, Matt Fleming wrote: > On Thu, 05 Nov, at 11:05:35PM, Andy Lutomirski wrote: > > > > Admittedly, we might need to use a certain amount of care to avoid > > interesting conflicts with the vmap mechanism. We might need to vmap > > all of the EFI stuff, and possibly even all the top-level entries that > > contain EFI stuff (i.e. exactly one of them unless EFI ends up *huge*) > > as a blank not-present region to avoid overlaps, but that's not a big > > deal. > > There shouldn't be any room for conflicting with vmap() because the VA > region where we map EFI regions is still carved out especially for us. > > Right Boris?
Yap:
ffffea0000000000 - ffffeaffffffffff (=40 bits) virtual memory map (1TB)
vs
ffffffef00000000 - ffffffff00000000 EFI region in trampoline_pgd
the new pagetable will make that issue moot too.
-- Regards/Gruss, Boris.
ECO tip #101: Trim your mails when you reply.
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