Messages in this thread | | | Date | Thu, 6 Jun 2013 23:02:18 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH 3/4] x86, efi: Add an efi= kernel command line parameter |
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On Thu, Jun 06, 2013 at 09:50:57PM +0100, Matthew Garrett wrote: > 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.
I want to be able to call the runtime services in the kexec kernel. Which means, the kexec kernel would simply map the runtime code/data regions 1:1 and then use the physical addresses to call the runtime services.
Question is: would that work even if SetVirtualAddressMap has already run in the original kernel and with virtual addresses?
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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