Messages in this thread | | | Date | Thu, 6 Jun 2013 21:50:57 +0100 | From | Matthew Garrett <> | Subject | Re: [PATCH 3/4] x86, efi: Add an efi= kernel command line parameter |
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On Thu, Jun 06, 2013 at 10:44:10PM +0200, Borislav Petkov wrote: > On Thu, Jun 06, 2013 at 09:30:57PM +0100, Matthew Garrett wrote: > > Well, we want the 1:1 mappings to exist all the time. The only > > thing the option should change is whether they're passed to > > SetVirtualAddressMap() or not. > > But can you call them even if they haven't been passed through > SetVirtualAddressMap, *after* SetVirtualAddressMap has been called?
What do you mean by "call them"? I don't think we ever want to call by physical address, other than maybe in the kexec case. The only reason we really care about the physical addresses being mapped 1:1 is that some pointers may not have been updated.
-- Matthew Garrett | mjg59@srcf.ucam.org
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