From: John Garry <john.garry@huawei.com>
To: Robin Murphy <robin.murphy@arm.com>, <joro@8bytes.org>,
<will@kernel.org>
Cc: dianders@chromium.org, linux-kernel@vger.kernel.org,
iommu@lists.linux-foundation.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 00/23] iommu: Refactor DMA domain strictness
Date: Mon, 26 Jul 2021 09:13:08 +0100 [thread overview]
Message-ID: <8e9da41e-4e3a-7098-bece-7f6cba89a2aa@huawei.com> (raw)
In-Reply-To: <cover.1626888444.git.robin.murphy@arm.com>
On 21/07/2021 19:20, Robin Murphy wrote:
> Hi all,
>
> First off, yes, this conflicts with just about everything else
> currently in-flight. Sorry about that. If it stands up to initial review
> then I'll start giving some thought to how to fit everything together
> (particularly John's cleanup of strictness defaults, which I'd be
> inclined to fold into a v2 of this series).
It seems to me that patch #20 is the only real conflict, and that is
just a different form of mine in that passthrough, strict, and lazy are
under a single choice, as opposed to passthrough being a separate config
(for mine). And on that point, I did assume that we would have a
different sysfs file for strict vs lazy in this series, and not a new
domain type. But I assume that there is a good reason for that.
Anyway, I'd really like to see my series just merged now.
Thanks,
John
>
> Anyway, this is my take on promoting the strict vs. non-strict DMA
> domain choice to distinct domain types, so that it can fit logically
> into the existing sysfs and Kconfig controls. The first 13 patches are
> effectively preparatory cleanup to reduce churn in the later changes,
> but could be merged in their own right even if the rest is too
> contentious. I ended up splitting patches #2-#11 by driver for ease of
> review, since some of them are more than just trivial deletions, but
> they could readily be squashed (even as far as with #1 and #12 too).
>
> I'm slightly surprised at how straightforward it's turned out, but it
> has survived some very basic smoke testing for arm-smmu using dmatest
> on my Arm Juno board. Branch here for convenience:
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next prev parent reply other threads:[~2021-07-26 8:13 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 18:20 [PATCH 00/23] iommu: Refactor DMA domain strictness Robin Murphy
2021-07-21 18:20 ` [PATCH 01/23] iommu: Pull IOVA cookie management into the core Robin Murphy
2021-07-21 18:20 ` [PATCH 02/23] iommu/amd: Drop IOVA cookie management Robin Murphy
2021-07-21 18:20 ` [PATCH 03/23] iommu/arm-smmu: " Robin Murphy
2021-07-21 18:20 ` [PATCH 04/23] iommu/vt-d: " Robin Murphy
2021-07-21 18:20 ` [PATCH 05/23] iommu/exynos: " Robin Murphy
2021-07-21 18:20 ` [PATCH 06/23] iommu/ipmmu-vmsa: " Robin Murphy
2021-07-21 18:20 ` [PATCH 07/23] iommu/mtk: " Robin Murphy
2021-07-21 18:20 ` [PATCH 08/23] iommu/rockchip: " Robin Murphy
2021-07-21 18:20 ` [PATCH 09/23] iommu/sprd: " Robin Murphy
2021-07-21 18:20 ` [PATCH 10/23] iommu/sun50i: " Robin Murphy
2021-07-21 18:20 ` [PATCH 11/23] iommu/virtio: " Robin Murphy
2021-07-21 18:20 ` [PATCH 12/23] iommu/dma: Unexport " Robin Murphy
2021-07-21 18:20 ` [PATCH 13/23] iommu/dma: Remove redundant "!dev" checks Robin Murphy
2021-07-26 8:28 ` John Garry
2021-07-21 18:20 ` [PATCH 14/23] iommu: Introduce explicit type for non-strict DMA domains Robin Murphy
2021-07-21 18:20 ` [PATCH 15/23] iommu/amd: Prepare for multiple DMA domain types Robin Murphy
2021-07-21 18:20 ` [PATCH 16/23] iommu/arm-smmu: " Robin Murphy
2021-07-26 12:46 ` Joerg Roedel
2021-07-26 13:09 ` Robin Murphy
2021-07-26 18:43 ` Joerg Roedel
2021-07-21 18:20 ` [PATCH 17/23] iommu/vt-d: " Robin Murphy
2021-07-22 16:44 ` kernel test robot
2021-07-22 17:30 ` Robin Murphy
2021-07-22 18:44 ` kernel test robot
2021-07-24 5:23 ` Lu Baolu
2021-07-26 8:30 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 18/23] iommu: Express DMA strictness via the domain type Robin Murphy
2021-07-24 5:29 ` Lu Baolu
2021-07-26 8:27 ` Robin Murphy
2021-07-26 11:31 ` Lu Baolu
2021-07-26 12:29 ` Lu Baolu
2021-07-26 12:43 ` Robin Murphy
2021-07-21 18:20 ` [PATCH 19/23] iommu: Expose DMA domain strictness via sysfs Robin Murphy
2021-07-21 18:20 ` [PATCH 20/23] iommu: Allow choosing DMA strictness at build time Robin Murphy
2021-07-21 18:20 ` [PATCH 21/23] iommu/dma: Factor out flush queue init Robin Murphy
2021-07-21 18:20 ` [PATCH 22/23] iommu: Allow enabling non-strict mode dynamically Robin Murphy
2021-07-21 18:20 ` [PATCH 23/23] iommu/arm-smmu: Allow non-strict in pgtable_quirks interface Robin Murphy
2021-07-26 8:13 ` John Garry [this message]
2021-07-26 12:06 ` [PATCH 00/23] iommu: Refactor DMA domain strictness Robin Murphy
2021-07-26 13:02 ` Joerg Roedel
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