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Re: [PATCH] x86/ucode: log blob date also for AMD
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Thu, 1 Apr 2021 12:22:05 +0100
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- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 01/04/2021 09:28, Jan Beulich wrote:
> Like Intel, AMD also records the date in their blobs. The field was
> merely misnamed as "data_code" so far; this was perhaps meant to be
> "date_code". Split it into individual fields, just like we did for Intel
> some time ago, and extend the message logged after a successful update.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Acked-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
This was on my todo list, but I'd not got around to it yet. There are
several legitimate microcode blobs with incorrect dates.
One has a date with a year earlier than its predecessor or successor,
and two have day/month transpositions. One transposition is obvious,
having a 13 in it, while the other is ambiguous and guessed based on
when the ucode was available.
I wasn't going to bother doing anything about this, but it is something
to be aware of if we get queries of wonky looking dates.
~Andrew
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