linux-kernel - Re: commit bd9240a18edfbfa72e957fc2ba831cf1f13ea073 seems to break with intel-ucode 20180425

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Date:   Mon, 14 May 2018 09:23:55 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     Gabriel C <nix.or.die@...il.com>
Cc:     kevin.b.stanton@...el.com, Thomas Gleixner <tglx@...utronix.de>,
        LKML <linux-kernel@...r.kernel.org>, X86 ML <x86@...nel.org>
Subject: Re: commit bd9240a18edfbfa72e957fc2ba831cf1f13ea073 seems to break
 with intel-ucode 20180425

On Sat, May 12, 2018 at 12:55:35PM +0200, Gabriel C wrote:
> Hi Peter,
> 
> after updating ucode to 20180425 on my laptop I always hit the
> 'TSC_DEADLINE disabled' error and so early microcode update from
> inird breaks.
> 
> Also I'm able to late load the microcode from command line but
> not from initrd.
> 
> Going back to ucode 20180312 make things work again.
> 
> I've tested on latest 4.16.8 kernel for now.
> 
> lscpu output:

Please provide /proc/cpuinfo (a single cpu is sufficient) for both
firmwares.

lscpu (whatever that is) lacks useful information, like the microcode
version.