Messages in this thread | | | Date | Tue, 28 Oct 2014 23:07:31 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCHv2 1/3] x86, ptdump: Add section for EFI runtime services |
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On Tue, Oct 28, 2014 at 10:49:36PM +0100, Mathias Krause wrote: > Sync only data or kernel code, too?
Data only should be enough.
> Really, I'd just map the EFI RT service virtual mappings "somewhere" > but at pgd[511] and have pgd[511] initially set up as > init_level4_pgt[511]. Then, thing should "just work"(TM).
Nah, nothing with EFI just works :-)
> If you fear the EFI code might do harm to the kernel code/data, then > you've lost anyway. Nothing will prevent the EFI code from doing nasty > things -- like setting up its own mappings to tamper with the kernel's > memory.
Sure, nothing would surprise me anymore. However, I'd prefer to not be an enabler. :)
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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