[CentOS] /lib/firmware/microcode.dat update on CentOS 6

Mon Jan 22 15:08:31 UTC 2018
Johnny Hughes <johnny at centos.org>

On 01/18/2018 09:42 AM, Valeri Galtsev wrote:
> On 01/18/18 03:41, Pete Biggs wrote:
>>> Look at:
>>> https://t.co/6fT61xgtGH
>>> Get the latest microcode.dat file from here:
>>> https://t.co/zPwagbeJFY
>>> See how to update the microcode from the links at the bottom of this
>>> page:
>>> https://t.co/EOgclWdHCw
>>> An before anyone asks .. I have no idea why Red Hat chose this path,
>>> they did.  It doesn't matter if I (or anyone else) agrees with the
>>> decision.  It is what it is.
>> **I'm not blaming you.**
>> But can I just clarify. We have to *manually* install the microcode
>> update an EL7 in order to be protected against Spectre? EL6 as well?
>> Presumably this is to remove RH from the loop and to stop people
>> blaming them - i.e. this is between Intel and the customer, it's
>> nothing to do with them.
> I bet you are right. I was going to rant about that... then it occurred
> to me that class action against Intel (didn't hear about AMD though) is
> quite likely, so, indeed, RedHat does not want to be even mentioned in
> it, which will be unfair, especially after RedHat putting effort into
> fixing somebody's else crap.

It isn't about washing hands, lawsuits, or soeoen else's stuff.  It is
about broken microcode updates.

The code from intel was broken .. causing several CPUs not to boot after
update.  That (and only that) is why they were pulled.

Users MUST individually QA the microcode for their individual CPUs, OEM
Frimware, chipset etc.

The issue here is that the microcode broke peoples machines .. therefore
it had to be rolled back.  All the other discussion is full and total BS.

It is likely ONCE all the microcode updates are tested and completely
working that Red Hat will again include it in the microcode_ctl RPM ..
but that can't put stuff in there that is breaking machines.

While things are beuing released as QA quality, they are going to have
to be done individually by admins .. that's just how it is.

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