Re: [PATCH v4] x86/microcode/intel: Blacklist the specific BDW-EP for late loading

From: Borislav Petkov
Date: Fri Dec 29 2017 - 08:44:49 EST


On Fri, Dec 29, 2017 at 09:17:34PM +0800, Jia Zhang wrote:
> Namely, the end user has to make a BIOS update to uprev the microcode.

Not quite: end user is dependent on the OEM to get a BIOS update.

What is meant with early loading in this context is, to put the
microcode in the initrd so that it gets loaded very early during the
*kernel* boot. And early-initrd-based loading is the default method we
do microcode loading with, anyway.

So the blacklisting is only for *late* loading, through the sysfs
trigger. Which is only there for historical reasons and for some
configurations.

--
Regards/Gruss,
Boris.

ECO tip #101: Trim your mails when you reply.
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