Messages in this thread | | | Date | Tue, 23 Sep 2014 22:00:54 +0200 | From | Borislav Petkov <> | Subject | Re: x86, microcode: BUG: microcode update that changes x86_capability |
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On Fri, Sep 19, 2014 at 01:42:17PM -0300, Henrique de Moraes Holschuh wrote: > 1. offline a "guinea pig" group of "cpus", i.e. an entire "microcode update > unit" that doesn't include the BSP. This is going to be a pain, as what > composes a "microcode update unit" is not set in stone, and could change in > a future microarch.
I'm pretty sure it is very dangerous to run with different microcode revisions on different cores. Your plan won't fly and I have hard time understanding why one would do such thing even if it did work.
If we're going to have to hide stuff which software might be using, I don't see a way around rebooting.
-- Regards/Gruss, Boris.
Sent from a fat crate under my desk. Formatting is fine. --
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