Messages in this thread | | | Date | Fri, 24 Oct 2014 14:03:23 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] x86: Don't allow stackprotector without TSC |
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On Thu, Oct 23, 2014 at 04:43:03PM -0700, Andy Lutomirski wrote: > Presumably the actual failure is a #GP when trying to do the rdtsc. If > so, wouldn't a better fix be to make that rdtsc check cpuid first? Can > we easily check cpuid that early?
I don't see why not.
The real question, though is, can we have a fallback for RDTSC on those machines so that they don't have to disable stack protector in order to boot.
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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