Re: [PATCH 3/4] x86, efi: Add an efi= kernel command line parameter

[Borislav Petkov]

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.
--
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/