linux-kernel - Re: [PATCH V6 4/5] iommu/dma-iommu: Use the dev->coherent_dma

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Message-ID: <CALQxJuumgH9xR-J1Nj3LQsLW6k+4ie_0Ho3N9UJiN4R0JBGYoQ@mail.gmail.com>
Date:   Fri, 10 Jul 2020 12:18:15 -0700
From:   Tom Murphy <murphyt7@....ie>
To:     Christoph Hellwig <hch@....de>
Cc:     iommu@...ts.linux-foundation.org,
        Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
        Marek Szyprowski <m.szyprowski@...sung.com>,
        Kukjin Kim <kgene@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Andy Gross <agross@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Rob Clark <robdclark@...il.com>,
        Heiko Stuebner <heiko@...ech.de>,
        Gerald Schaefer <gerald.schaefer@...ibm.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-tegra@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH V6 4/5] iommu/dma-iommu: Use the dev->coherent_dma_mask

>Btw, what is the current state of converting intel-iommu to the dma-iommu

These changes expose a bug in the i915 intel driver which hasn't been
fixed yet. I don't think anyone is actively working on it but I plan
on merging as many patches as I can so it's easier to do the
intel-iommu -> dma-iommu conversion once the bug is fixed.

You can read more about it here:
https://patchwork.kernel.org/cover/11306999/

On Fri, 10 Jul 2020 at 08:59, Christoph Hellwig <hch@....de> wrote:
>
> Btw, what is the current state of converting intel-iommu to the dma-iommu
> code?