linux-kernel - Re: [RFC PATCH 06/11] iommu: arm-smmu: Remove Calxeda secure mode quirk

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Date:   Tue, 25 Feb 2020 16:01:54 -0600
From:   Rob Herring <robh@...nel.org>
To:     Will Deacon <will@...nel.org>
Cc:     "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        soc@...nel.org, Andre Przywara <andre.przywara@....com>,
        Robert Richter <rrichter@...vell.com>,
        Jon Loeliger <jdl@....com>, Alexander Graf <graf@...zon.com>,
        Matthias Brugger <mbrugger@...e.com>,
        Mark Langsdorf <mlangsdo@...hat.com>,
        Alex Williamson <alex.williamson@...hat.com>,
        Borislav Petkov <bp@...en8.de>,
        Cornelia Huck <cohuck@...hat.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        "David S. Miller" <davem@...emloft.net>,
        devicetree@...r.kernel.org, Eric Auger <eric.auger@...hat.com>,
        Linux IOMMU <iommu@...ts.linux-foundation.org>,
        James Morse <james.morse@....com>,
        Jens Axboe <axboe@...nel.dk>, Joerg Roedel <joro@...tes.org>,
        kvm@...r.kernel.org, linux-clk <linux-clk@...r.kernel.org>,
        linux-edac <linux-edac@...r.kernel.org>,
        "open list:LIBATA SUBSYSTEM (Serial and Parallel ATA drivers)" 
        <linux-ide@...r.kernel.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        netdev <netdev@...r.kernel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Robin Murphy <robin.murphy@....com>,
        Stephen Boyd <sboyd@...nel.org>,
        Tony Luck <tony.luck@...el.com>,
        Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [RFC PATCH 06/11] iommu: arm-smmu: Remove Calxeda secure mode quirk

On Tue, Feb 18, 2020 at 11:20 AM Will Deacon <will@...nel.org> wrote:
>
> On Tue, Feb 18, 2020 at 11:13:16AM -0600, Rob Herring wrote:
> > Cc: Will Deacon <will@...nel.org>
> > Cc: Robin Murphy <robin.murphy@....com>
> > Cc: Joerg Roedel <joro@...tes.org>
> > Cc: iommu@...ts.linux-foundation.org
> > Signed-off-by: Rob Herring <robh@...nel.org>
> > ---
> > Do not apply yet.
>
> Pleeeeease? ;)
>
> >  drivers/iommu/arm-smmu-impl.c | 43 -----------------------------------
> >  1 file changed, 43 deletions(-)
>
> Yes, I'm happy to get rid of this. Sadly, I don't think we can remove
> anything from 'struct arm_smmu_impl' because most implementations fall
> just short of perfect.
>
> Anyway, let me know when I can push the button and I'll queue this in
> the arm-smmu tree.

Seems we're leaving the platform support for now, but I think we never
actually enabled SMMU support. It's not in the dts either in mainline
nor the version I have which should be close to what shipped in
firmware. So as long as Andre agrees, this one is good to apply.

Rob