linux-kernel - Re: [PATCH v19 00/15] arm64: untag user pointers passed to the kernel

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Date:   Tue, 6 Aug 2019 18:13:36 +0100
From:   Will Deacon <will@...nel.org>
To:     Will Deacon <will.deacon@....com>
Cc:     Andrey Konovalov <andreyknvl@...gle.com>,
        Vincenzo Frascino <vincenzo.frascino@....com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Mark Rutland <mark.rutland@....com>, kvm@...r.kernel.org,
        Szabolcs Nagy <Szabolcs.Nagy@....com>,
        dri-devel@...ts.freedesktop.org,
        Kostya Serebryany <kcc@...gle.com>,
        Khalid Aziz <khalid.aziz@...cle.com>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        Felix Kuehling <Felix.Kuehling@....com>,
        Jacob Bramley <Jacob.Bramley@....com>,
        Leon Romanovsky <leon@...nel.org>, linux-rdma@...r.kernel.org,
        amd-gfx@...ts.freedesktop.org,
        Christoph Hellwig <hch@...radead.org>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Dave Martin <Dave.Martin@....com>,
        Evgeniy Stepanov <eugenis@...gle.com>,
        linux-media@...r.kernel.org, Kevin Brodsky <kevin.brodsky@....com>,
        Kees Cook <keescook@...omium.org>,
        Ruben Ayrapetyan <Ruben.Ayrapetyan@....com>,
        Ramana Radhakrishnan <Ramana.Radhakrishnan@....com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Yishai Hadas <yishaih@...lanox.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Jens Wiklander <jens.wiklander@...aro.org>,
        Lee Smith <Lee.Smith@....com>,
        Alexander Deucher <Alexander.Deucher@....com>,
        enh <enh@...gle.com>, Robin Murphy <robin.murphy@....com>,
        Christian Koenig <Christian.Koenig@....com>,
        Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Subject: Re: [PATCH v19 00/15] arm64: untag user pointers passed to the kernel

On Wed, Jul 24, 2019 at 03:20:59PM +0100, Will Deacon wrote:
> On Wed, Jul 24, 2019 at 04:16:49PM +0200, Andrey Konovalov wrote:
> > On Wed, Jul 24, 2019 at 4:02 PM Will Deacon <will@...nel.org> wrote:
> > > On Tue, Jul 23, 2019 at 08:03:29PM +0200, Andrey Konovalov wrote:
> > > > Should this go through the mm or the arm tree?
> > >
> > > I would certainly prefer to take at least the arm64 bits via the arm64 tree
> > > (i.e. patches 1, 2 and 15). We also need a Documentation patch describing
> > > the new ABI.
> > 
> > Sounds good! Should I post those patches together with the
> > Documentation patches from Vincenzo as a separate patchset?
> 
> Yes, please (although as you say below, we need a new version of those
> patches from Vincenzo to address the feedback on v5). The other thing I
> should say is that I'd be happy to queue the other patches in the series
> too, but some of them are missing acks from the relevant maintainers (e.g.
> the mm/ and fs/ changes).

Ok, I've queued patches 1, 2, and 15 on a stable branch here:

  https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=for-next/tbi

which should find its way into -next shortly via our for-next/core branch.
If you want to make changes, please send additional patches on top.

This is targetting 5.4, but I will drop it before the merge window if
we don't have both of the following in place:

  * Updated ABI documentation with Acks from Catalin and Kevin
  * The other patches in the series either Acked (so I can pick them up)
    or queued via some other tree(s) for 5.4.

Make sense?

Cheers,

Will