linux-kernel - Re: [PATCH 0/7] IBRS patch series

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Date:   Fri, 5 Jan 2018 14:28:56 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Yves-Alexis Perez <corsac@...ian.org>
Cc:     Tim Chen <tim.c.chen@...ux.intel.com>,
        Justin Forbes <jmforbes@...uxtx.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Dave Hansen <dave.hansen@...el.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Arjan Van De Ven <arjan.van.de.ven@...el.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/7] IBRS patch series

On Thu, Jan 04, 2018 at 10:01:52PM +0100, Yves-Alexis Perez wrote:
> On Thu, 2018-01-04 at 11:10 -0800, Tim Chen wrote:
> > > Are there plans to make the corresponding microcode support available?
> > > 
> > 
> > The microcode patches should be released soon.
> 
> In the meantime, Lenovo has started issuing BIOS/UEFI updates which include
> microcode updates for this.
> 
> See for example for the ThinkPad X250
> 
> https://download.lenovo.com/pccbbs/mobiles/n10ur16w.txt
> https://download.lenovo.com/pccbbs/mobiles/n10ur16w.iso
> 
> iucode-tool -L -tr n10ur16w.iso |grep 2017-11
>   001/020: sig 0x000306d4, pf_mask 0xc0, 2017-11-17, rev 0x0028, size 18432

That's been out for a while now:
	https://downloadcenter.intel.com/download/27337/Linux-Processor-Microcode-Data-File

so I really don't think this is an "update" yet.

I saw a bios update for my Dell laptop dated December 28, but it didn't
seem to change anything with the cpuids or microcode status from before.

A hard answer to what "soon" means here would be nice to get, as I'm
seeing a lot of misunderstanding floating around right now :(

thanks,

greg k-h