Re: microcode updates and spectre variant 2

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On Mon, Jan 15, 2018 at 12:58 PM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote:
> On Fri, Jan 12, 2018 at 2:28 PM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote:
>> On Fri, Jan 12, 2018 at 2:00 PM, Josh Boyer <jwboyer@xxxxxxxxxxxxxxxxx> wrote:
>>> On Fri, Jan 12, 2018 at 3:31 PM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote:
>>>> Koji contains linux-firmware-20171215-82.git2451bb22.fc27 which
>>>> contains intel-ucode from 20171117. But I don't know if this firmware
>>>> contains the microcode required to completely secure from Spectre
>>>> variant 2.
>>>
>>> Intel CPU microcode is not provided by the linux-firmware package.  It
>>> is shipped in the microcode_ctl package.
>>
>> Huh. So I have updates-testing enabled but I have
>> microcode_ctl-2.1-19.fc27 still. And microcode_ctl-2.1-20.fc27 is
>> stable.
>
> This showed up in today's batch of updates in GNOME Software, but I
> did not get a notification for it. In fact I haven't received a
> notification for software updates in probably two weeks. I'd like to
> think this particular microcode update would be tagged as an urgent
> update.
>
> If microcode is updated, but the initramfs isn't regenerated, so the
> newer microcode get loaded later in the boot process once available?
> Or does it have to be in the initramfs?

I can't remember if systemd does this now by default or not.  The best
option is to regen the initramfs.

josh
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