Re: [PATCH v2 00/10] arm64: tegra: Prevent early SMMU faults

From: Thierry Reding <thierry.reding@gmail.com>
To: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Cc: Will Deacon <will@kernel.org>, Joerg Roedel <joro@8bytes.org>,
	iommu@lists.linux-foundation.org,
	Jon Hunter <jonathanh@nvidia.com>,
	Nicolin Chen <nicolinc@nvidia.com>,
	linux-tegra@vger.kernel.org, Robin Murphy <robin.murphy@arm.com>,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 00/10] arm64: tegra: Prevent early SMMU faults
Date: Wed, 2 Jun 2021 10:52:16 +0200	[thread overview]
Message-ID: <YLdGwD0dxfER4USn@orome.fritz.box> (raw)
In-Reply-To: <8c70f82f-0db9-2312-7fc4-c079899c25a0@canonical.com>

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On Wed, Jun 02, 2021 at 09:35:13AM +0200, Krzysztof Kozlowski wrote:
> On 02/06/2021 09:33, Krzysztof Kozlowski wrote:
> > On 01/06/2021 20:08, Thierry Reding wrote:
> >> On Tue, Jun 01, 2021 at 01:26:46PM +0100, Will Deacon wrote:
> >>> On Fri, May 28, 2021 at 07:05:28PM +0200, Thierry Reding wrote:
> >>>> On Tue, Apr 20, 2021 at 07:26:09PM +0200, Thierry Reding wrote:
> >>>>> From: Thierry Reding <treding@nvidia.com>
> >>>>>
> >>> Probably best if I queue 3-6 on a separate branch once you send a v3,
> >>> then Krzysztof can pull that in if he needs it.
> >>
> >> Patch 5 has a build-time dependency on patch 1, so they need to go in
> >> together. The reason why I suggested Krzysztof pick these up is because
> >> there is a restructuring series that this depends on, which will go into
> >> Krzysztof's tree. So in order to pull in 3-6, you'd get a bunch of other
> >> and mostly unrelated stuff as well.
> > 
> > I missed that part... what other series are needed for this one? Except
> > Dmitry's power management set I do not have anything in my sight for
> > Tegras memory controllers.
> > 
> > Anyway, I can take the memory bits and provide a stable tag with these.
> > Recently there was quite a lot work around Tegra memory controllers, so
> > this makes especially sense if new patches appear.
> 
> OK, I think I have now the patchset you talked about - "memory: tegra:
> Driver unification" v2, right?

Yes, that's the one. That series is fairly self-contained, but Dmitry's
power management set has dependencies that pull in the regulator, clock
and ARM SoC trees.

I did a test merge of the driver unification series with a branch that
has Dmitry's patches and all the dependencies and there are no conflicts
so that, fortunately, doesn't further complicates things.

Do you want me to send you a pull request with Dmitry's memory
controller changes? You could then apply the unification series on top,
which should allow this SMMU series to apply cleanly on top of that.

I can also carry all these changes in the Tegra tree and send a PR in a
few days once this has seen a bit more testing in linux-next, which also
makes sure it's got a bit more testing in our internal test farm.

Thierry

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