linux-kernel - RE: [PATCH 1/1] Update AMD cpu microcode for family 15h

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Date:   Tue, 5 Jun 2018 14:27:27 +0000
From:   "Hurwitz, Sherry" <sherry.hurwitz@....com>
To:     Rudolf Marek <r.marek@...embler.cz>,
        Henrique de Moraes Holschuh <hmh@....eng.br>,
        Ivan Ivanov <qmastery16@...il.com>
CC:     Josh Boyer <jwboyer@...nel.org>,
        Linux Firmware <linux-firmware@...nel.org>,
        "Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
        "Suthikulpanit, Suravee" <Suravee.Suthikulpanit@....com>,
        "Lendacky, Thomas" <Thomas.Lendacky@....com>,
        "Grimm, Jon" <Jon.Grimm@....com>
Subject: RE: [PATCH 1/1] Update AMD cpu microcode for family 15h

Hi Rudolf,
I have been investigating the status with the AMD release management, but I have not been given approval to publish any other microcode.  I have been trying to track down why there might be a version in the wild that I have not been given for public publishing.  It might have come from a BIOS update and not a OS microcode load but I don't have the definitive details on that either.  I will publish whatever is released to me as soon as possible.

Sherry

> -----Original Message-----
> From: Rudolf Marek [mailto:r.marek@...embler.cz]
> Sent: Monday, June 04, 2018 2:27 PM
> To: Henrique de Moraes Holschuh <hmh@....eng.br>; Ivan Ivanov
> <qmastery16@...il.com>
> Cc: Josh Boyer <jwboyer@...nel.org>; Hurwitz, Sherry
> <sherry.hurwitz@....com>; Linux Firmware <linux-firmware@...nel.org>;
> Linux-Kernel@...r. Kernel. Org <linux-kernel@...r.kernel.org>;
> Suthikulpanit, Suravee <Suravee.Suthikulpanit@....com>; Lendacky,
> Thomas <Thomas.Lendacky@....com>; Grimm, Jon
> <Jon.Grimm@....com>
> Subject: Re: [PATCH 1/1] Update AMD cpu microcode for family 15h
> 
> Hi Sherry,
> 
> Any news on this please? It seems we still miss updated microcode for certain
> fam15h/16h for Linux.
> 
> Thanks
> Rudolf
> 
> 
> Dne 1.6.2018 v 00:05 Henrique de Moraes Holschuh napsal(a):
> > On Wed, 30 May 2018, Ivan Ivanov wrote:
> >> This is still not addressing the outdated 15h microcode version issue
> >> that Rudolf Marek has pointed out. Also, we still hope to see an
> >> updated microcode for 16h architecture as well - it has not received
> >> any updates for two years already
> >
> > True, but now at least it won't regress old boxes anymore, so we can
> > ship it in the stable branches of the distros with less restrictions.
> >
> > It would be really good to be able to actually mitigate spectre v2/v4
> > on most AMD systems, though.  And current experience shows this is
> > only going to happen if we can have the required microcode update also
> > going through the operating system update channels.
> 
> 
> 
> > Dne 24.5.2018 v 16:48 Hurwitz, Sherry napsal(a):
> >> Thank you for pointing this out.  Let me investigate and send out an
> updated fam15h container.
> >
> > Thanks I have seen the patch. However it still contains "old"
> > microcode from 2012, patch level 0x06001119. Do you plan to update it to
> 0x0600111f, which will support IBPB?
> >
> > Thanks
> > Rudolf
> >
> >
> 
> > I noticed in commit [1], that 0x00610f01 microcode is removed
> > completely. It has only entry in the equivalence table, but the actual
> microcode is gone. As this update fixes important errata (and it was latest
> supported microcode officially released), what is the reason behind that?
> >
> > Maybe it is a mistake? Or new microcode will be provided? I seen in
> > the wild one with patch level 0x0600111f, but it does not seem to be
> available?
> >
> > Please can someone throw some light on that?
> >
> > Many thanks
> > Rudolf
> >
> >
> > [1]
> > https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmwar
> > e.git/commit/amd-
> ucode/microcode_amd_fam15h.bin?id=77101513943ef198e20
> > 50667c87abf19e6cbb1d8