linux-kernel - Re: [GIT PULL] arm64 spectre and meltdown mitigations for -stable

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Message-ID: <20180214124101.GE2992@arm.com>
Date:   Wed, 14 Feb 2018 12:41:01 +0000
From:   Will Deacon <will.deacon@....com>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     stable@...r.kernel.org, linux-kernel@...r.kernel.org,
        ard.biesheuvel@...aro.org
Subject: Re: [GIT PULL] arm64 spectre and meltdown mitigations for -stable

Hey Greg,

On Tue, Feb 13, 2018 at 05:48:59PM +0100, Greg KH wrote:
> On Fri, Feb 09, 2018 at 04:04:36PM +0100, Greg KH wrote:
> > On Fri, Feb 09, 2018 at 01:51:31PM +0000, Will Deacon wrote:
> > > On Fri, Feb 09, 2018 at 02:49:57PM +0100, Greg KH wrote:
> > > > On Fri, Feb 09, 2018 at 01:48:11PM +0000, Will Deacon wrote:
> > > > > Hi Greg,
> > > > > 
> > > > > I've put together a tag which includes all of the upstream arm64 spectre and
> > > > > meltdown mitigations based on v4.15. Please could you consider taking this
> > > > > into the 4.15 stable tree?
> > > > > 
> > > > > I understand that Ard (cc'd) is using this stack to create a version for 4.14
> > > > > too.
> > > > > 
> > > > > Note that there are two commits in here that are already in stable:
> > > > > 
> > > > >   9c9345fb26ff [Variant 1/Spectre-v1] Documentation: Document array_index_nospec
> > > > >   60d6c8a8e54e [Variant 1/Spectre-v1] array_index_nospec: Sanitize speculative array de-references
> > > > > 
> > > > > so you can skip those when applying.
> > > > > 
> > > > > Please shout if you run into trouble.
> > > > 
> > > > Ah, nice, thanks for this.  I'll use this for the next 4.15.y kernel
> > > > release after the one I _just_ sent out for review a few minutes ago.
> > > 
> > > Cool, sorry for the unfortunate timing. This only hit mainline last night.
> > 
> > Ok, then it's not a big deal to wait a few more days :)
> 
> All now queued up, thanks!

Good to hear, thanks! Could you also queue the 4.14 backport [1], please?
Having this in an LTS would be really handy.

Cheers,

Will

[1] http://lkml.kernel.org/r/20180212113801.2552-1-ard.biesheuvel@linaro.org