Re: [PATCH v2 00/10] arm64: tegra: Prevent early SMMU faults
From: Thierry Reding <hidden>
Date: 2021-06-02 14:53:45
Also in:
linux-arm-kernel, linux-iommu
On Wed, Jun 02, 2021 at 12:44:58PM +0200, Krzysztof Kozlowski wrote:
On 02/06/2021 10:52, Thierry Reding wrote:quoted
On Wed, Jun 02, 2021 at 09:35:13AM +0200, Krzysztof Kozlowski wrote:quoted
On 02/06/2021 09:33, Krzysztof Kozlowski wrote:quoted
On 01/06/2021 20:08, Thierry Reding wrote:quoted
On Tue, Jun 01, 2021 at 01:26:46PM +0100, Will Deacon wrote:quoted
On Fri, May 28, 2021 at 07:05:28PM +0200, Thierry Reding wrote:quoted
On Tue, Apr 20, 2021 at 07:26:09PM +0200, Thierry Reding wrote:quoted
From: Thierry Reding <redacted>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.Makes sense and it looks quite bulletproof for future changes. Let's do like this. I will apply your patch 1/10 from this v2 on top of it and driver unification later.
The SMMU series here depends on the unification series, so the unification series needs to go first. It'd be a fair bit of work to reverse that because the ->probe_device() callback implemented by the first patch of this SMMU series is part of the tegra_mc_ops structure that's introduced in the unification series. Thierry
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