From: Niklas Schnelle <schnelle@linux.ibm.com>
To: Christoph Hellwig <hch@infradead.org>
Cc: Joerg Roedel <joro@8bytes.org>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Will Deacon <will@kernel.org>,
Wenjia Zhang <wenjia@linux.ibm.com>,
Robin Murphy <robin.murphy@arm.com>,
Jason Gunthorpe <jgg@ziepe.ca>, Gerd Bayer <gbayer@linux.ibm.com>,
Julian Ruess <julianr@linux.ibm.com>,
Pierre Morel <pmorel@linux.ibm.com>,
Alexandra Winter <wintera@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
Hector Martin <marcan@marcan.st>, Sven Peter <sven@svenpeter.dev>,
Alyssa Rosenzweig <alyssa@rosenzweig.io>,
David Woodhouse <dwmw2@infradead.org>,
Lu Baolu <baolu.lu@linux.intel.com>,
Andy Gross <agross@kernel.org>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konrad.dybcio@linaro.org>,
Yong Wu <yong.wu@mediatek.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Gerald Schaefer <gerald.schaefer@linux.ibm.com>,
Orson Zhai <orsonzhai@gmail.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Chunyan Zhang <zhang.lyra@gmail.com>,
Chen-Yu Tsai <wens@csie.org>,
Jernej Skrabec <jernej.skrabec@gmail.com>,
Samuel Holland <samuel@sholland.org>,
Thierry Reding <thierry.reding@gmail.com>,
Krishna Reddy <vdumpa@nvidia.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Jonathan Corbet <corbet@lwn.net>,
linux-s390@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org, iommu@lists.linux.dev,
asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org,
linux-mediatek@lists.infradead.org, linux-sunxi@lists.linux.dev,
linux-tegra@vger.kernel.org, linux-doc@vger.kernel.org
Subject: Re: [PATCH v8 0/6] iommu/dma: s390 DMA API conversion and optimized IOTLB flushing
Date: Mon, 15 May 2023 11:33:25 +0200 [thread overview]
Message-ID: <670b01819f6f875364abaafa4accad9fa92e6177.camel@linux.ibm.com> (raw)
In-Reply-To: <ZF5NRls92rhmzV7B@infradead.org>
On Fri, 2023-05-12 at 07:29 -0700, Christoph Hellwig wrote:
> On Fri, Mar 10, 2023 at 05:07:45PM +0100, Niklas Schnelle wrote:
> > Hi All,
> >
> > This patch series converts s390's PCI support from its platform specific DMA
> > API implementation in arch/s390/pci/pci_dma.c to the common DMA IOMMU layer.
> > The conversion itself is done in patches 3-4 with patch 2 providing the final
> > necessary IOMMU driver improvement to handle s390's special IOTLB flush
> > out-of-resource indication in virtualized environments. Patches 1-2 may be
> > applied independently. The conversion itself only touches the s390 IOMMU driver
> > and s390 arch code moving over remaining functions from the s390 DMA API
> > implementation. No changes to common code are necessary.
>
> It looks like this still hasn't made it upstream as of 6.4-rc1. What's
> holding this series up?
>
I think with all the IOMMUFD work going on this got starved out of
reviewer resources. I didn't have any open todos but I guess there is
still some review needed around how the IOMMU driver tells the dma-
iommu that it expects IOTLB flushes to be slow requiring a larger
single flush queue. There was also a small conflict with commit
49a22aae7d9c ("iommu: Replace device_lock() with group->mutex") that
prevented this from applying to current upstream so I've just now sent
out a v9 rebased on v6.4-rc2.
Thanks,
Niklas
prev parent reply other threads:[~2023-05-15 9:56 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-10 16:07 [PATCH v8 0/6] iommu/dma: s390 DMA API conversion and optimized IOTLB flushing Niklas Schnelle
2023-03-10 16:07 ` [PATCH v8 1/6] s390/ism: Set DMA coherent mask Niklas Schnelle
2023-03-10 16:07 ` [PATCH v8 2/6] iommu: Allow .iotlb_sync_map to fail and handle s390's -ENOMEM return Niklas Schnelle
2023-03-14 20:06 ` Jernej Škrabec
2023-03-10 16:07 ` [PATCH v8 3/6] s390/pci: prepare is_passed_through() for dma-iommu Niklas Schnelle
2023-03-10 16:07 ` [PATCH v8 4/6] s390/pci: Use dma-iommu layer Niklas Schnelle
2023-03-10 16:07 ` [PATCH v8 5/6] iommu/dma: Allow a single FQ in addition to per-CPU FQs Niklas Schnelle
2023-03-10 16:07 ` [PATCH v8 6/6] iommu/dma: Make flush queue sizes and timeout driver configurable Niklas Schnelle
2023-05-12 14:29 ` [PATCH v8 0/6] iommu/dma: s390 DMA API conversion and optimized IOTLB flushing Christoph Hellwig
2023-05-15 9:33 ` Niklas Schnelle [this message]
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