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Feature #9744
closed
invalidate cache before microcode update
Start date:
2018-08-16
Due date:
% Done:
100%
Estimated time:
Difficulty:
Medium
Tags:
Gerrit CR:
External Bug:
Description
There have been some reports that certain microcode updates on a few parts require that the cache be flushed before performing the microcode update itself due to the pieces that the microcode is updating. Therefore we should always invalidate the cache immediately before performing the wrmsr for the microcode update. Intel has made patches available to Linux that do this and suggested we implement the same thing.
Updated by Electric Monk about 5 years ago
- Status changed from New to Closed
git commit f226ceedc64a2db2c8016f3de28194d222fec764
commit f226ceedc64a2db2c8016f3de28194d222fec764
Author: Robert Mustacchi <rm@joyent.com>
Date: 2018-09-11T02:31:02.000Z
9744 invalidate cache before microcode update
Reviewed by: John Levon <john.levon@joyent.com>
Reviewed by: Andy Fiddaman <omnios@citrus-it.co.uk>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Approved by: Dan McDonald <danmcd@joyent.com>
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