Messages in this thread | | | Date | Fri, 16 Feb 2018 19:58:56 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH 0/2] efivars: reading variables can generate SMIs |
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On Fri, Feb 16, 2018 at 10:48:32AM -0800, Joe Konno wrote: > We may see some other patches or RFCs about caching and/or shadowing > variable values in efivarfs to reduce the number of direct EFI reads, > with the goal of reducing how many SMIs are generated.
So if you do the caching scheme, the question about narrowing permissions becomes moot...
> Any obvious EFI variables that userspace tools have come to depend on-- > those which normal, unprivileged users need to read-- are helpful inputs > to this discussion.
... which solves the aspect of not breaking userspace nicely.
-- Regards/Gruss, Boris.
Good mailing practices for 400: avoid top-posting and trim the reply.
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