Re: [PATCH V5 1/5] iommu/amd: Remove unnecessary locking from AMD iommu driver

Subject: Re: [PATCH V5 1/5] iommu/amd: Remove unnecessary locking from AMD iommu driver
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sat, 24 Aug 2019 15:41:32 -0700
Cc: Christoph Hellwig <hch@xxxxxxxxxxxxx>, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, Heiko Stuebner <heiko@xxxxxxxxx>, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-tegra@xxxxxxxxxxxxxxx, Thierry Reding <thierry.reding@xxxxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>, linux-samsung-soc@xxxxxxxxxxxxxxx, Krzysztof Kozlowski <krzk@xxxxxxxxxx>, Jonathan Hunter <jonathanh@xxxxxxxxxx>, linux-rockchip@xxxxxxxxxxxxxxxxxxx, Andy Gross <agross@xxxxxxxxxx>, Gerald Schaefer <gerald.schaefer@xxxxxxxxxx>, linux-s390@xxxxxxxxxxxxxxx, linux-arm-msm@xxxxxxxxxxxxxxx, linux-mediatek@xxxxxxxxxxxxxxxxxxx, Matthias Brugger <matthias.bgg@xxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, David Woodhouse <dwmw2@xxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Kukjin Kim <kgene@xxxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>
In-reply-to: <CALQxJussiGDzWFT1xhko6no5jZNOezWCFuJQUCr4XwH4NHri3Q@mail.gmail.com>
References: <20190815110944.3579-1-murphyt7@tcd.ie> <20190815110944.3579-2-murphyt7@tcd.ie> <20190820094143.GA24154@infradead.org> <CALQxJussiGDzWFT1xhko6no5jZNOezWCFuJQUCr4XwH4NHri3Q@mail.gmail.com>
User-agent: Mutt/1.11.4 (2019-03-13)

Thank for the explanation Tom. It might make sense to add a condensed
version of it to commit log for the next iteration.

References:
- [PATCH V5 0/5] iommu/amd: Convert the AMD iommu driver to the dma-iommu api
  - From: Tom Murphy
- [PATCH V5 1/5] iommu/amd: Remove unnecessary locking from AMD iommu driver
  - From: Tom Murphy
- Re: [PATCH V5 1/5] iommu/amd: Remove unnecessary locking from AMD iommu driver
  - From: Christoph Hellwig
- Re: [PATCH V5 1/5] iommu/amd: Remove unnecessary locking from AMD iommu driver
  - From: Tom Murphy