From: Jason Gunthorpe <jgg@ziepe•ca>
To: Niklas Schnelle <schnelle@linux•ibm.com>,
Robin Murphy <robin.murphy@arm•com>
Cc: Joerg Roedel <joro@8bytes•org>,
Matthew Rosato <mjrosato@linux•ibm.com>,
Will Deacon <will@kernel•org>,
Wenjia Zhang <wenjia@linux•ibm.com>,
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 v9 5/6] iommu/dma: Allow a single FQ in addition to per-CPU FQs
Date: Mon, 15 May 2023 10:07:27 -0300 [thread overview]
Message-ID: <ZGIuj2pRjOPffqZZ@ziepe.ca> (raw)
In-Reply-To: <20230310-dma_iommu-v9-5-65bb8edd2beb@linux.ibm.com>
On Mon, May 15, 2023 at 11:15:55AM +0200, Niklas Schnelle wrote:
> +/**
> + * struct dma_iommu_options - Options for dma-iommu
> + *
> + * @flags: Flag bits for enabling/disabling dma-iommu settings
> + *
> + * This structure is intended to provide IOMMU drivers a way to influence the
> + * behavior of the dma-iommu DMA API implementation. This allows optimizing for
> + * example for a virtualized environment with slow IOTLB flushes.
> + */
> +struct dma_iommu_options {
> +#define IOMMU_DMA_OPTS_PER_CPU_QUEUE (0L << 0)
> +#define IOMMU_DMA_OPTS_SINGLE_QUEUE (1L << 0)
> + u64 flags;
> +};
You need to hash it out with robin if we do something like this or use
more untyped caps as he put in this series:
https://lore.kernel.org/linux-iommu/cover.1683233867.git.robin.murphy@arm.com/
Jason
next prev parent reply other threads:[~2023-05-15 13:07 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-15 9:15 [PATCH v9 0/6] iommu/dma: s390 DMA API conversion and optimized IOTLB flushing Niklas Schnelle
2023-05-15 9:15 ` [PATCH v9 1/6] s390/ism: Set DMA coherent mask Niklas Schnelle
2023-05-16 7:39 ` Pierre Morel
2023-05-16 7:58 ` Petr Tesařík
2023-05-15 9:15 ` [PATCH v9 2/6] iommu: Allow .iotlb_sync_map to fail and handle s390's -ENOMEM return Niklas Schnelle
2023-05-15 9:15 ` [PATCH v9 3/6] s390/pci: prepare is_passed_through() for dma-iommu Niklas Schnelle
2023-05-15 9:15 ` [PATCH v9 4/6] s390/pci: Use dma-iommu layer Niklas Schnelle
2023-05-15 9:15 ` [PATCH v9 5/6] iommu/dma: Allow a single FQ in addition to per-CPU FQs Niklas Schnelle
2023-05-15 13:07 ` Jason Gunthorpe [this message]
2023-05-15 14:42 ` Niklas Schnelle
2023-05-22 16:26 ` Robin Murphy
2023-05-23 12:02 ` Niklas Schnelle
2023-05-23 12:16 ` Robin Murphy
2023-05-23 13:35 ` Niklas Schnelle
2023-05-15 9:15 ` [PATCH v9 6/6] iommu/dma: Make flush queue sizes and timeout driver configurable Niklas Schnelle
2023-05-22 16:10 ` Joerg Roedel
2023-05-23 12:20 ` Niklas Schnelle
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=ZGIuj2pRjOPffqZZ@ziepe.ca \
--to=jgg@ziepe$(echo .)ca \
--cc=agordeev@linux$(echo .)ibm.com \
--cc=agross@kernel$(echo .)org \
--cc=alyssa@rosenzweig$(echo .)io \
--cc=andersson@kernel$(echo .)org \
--cc=angelogioacchino.delregno@collabora$(echo .)com \
--cc=asahi@lists$(echo .)linux.dev \
--cc=baolin.wang@linux$(echo .)alibaba.com \
--cc=baolu.lu@linux$(echo .)intel.com \
--cc=borntraeger@linux$(echo .)ibm.com \
--cc=corbet@lwn$(echo .)net \
--cc=dwmw2@infradead$(echo .)org \
--cc=gbayer@linux$(echo .)ibm.com \
--cc=gerald.schaefer@linux$(echo .)ibm.com \
--cc=gor@linux$(echo .)ibm.com \
--cc=hca@linux$(echo .)ibm.com \
--cc=iommu@lists$(echo .)linux.dev \
--cc=jernej.skrabec@gmail$(echo .)com \
--cc=jonathanh@nvidia$(echo .)com \
--cc=joro@8bytes$(echo .)org \
--cc=julianr@linux$(echo .)ibm.com \
--cc=konrad.dybcio@linaro$(echo .)org \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
--cc=linux-arm-msm@vger$(echo .)kernel.org \
--cc=linux-doc@vger$(echo .)kernel.org \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=linux-mediatek@lists$(echo .)infradead.org \
--cc=linux-s390@vger$(echo .)kernel.org \
--cc=linux-sunxi@lists$(echo .)linux.dev \
--cc=linux-tegra@vger$(echo .)kernel.org \
--cc=marcan@marcan$(echo .)st \
--cc=matthias.bgg@gmail$(echo .)com \
--cc=mjrosato@linux$(echo .)ibm.com \
--cc=netdev@vger$(echo .)kernel.org \
--cc=orsonzhai@gmail$(echo .)com \
--cc=pmorel@linux$(echo .)ibm.com \
--cc=robin.murphy@arm$(echo .)com \
--cc=samuel@sholland$(echo .)org \
--cc=schnelle@linux$(echo .)ibm.com \
--cc=suravee.suthikulpanit@amd$(echo .)com \
--cc=sven@svenpeter$(echo .)dev \
--cc=svens@linux$(echo .)ibm.com \
--cc=thierry.reding@gmail$(echo .)com \
--cc=vdumpa@nvidia$(echo .)com \
--cc=wenjia@linux$(echo .)ibm.com \
--cc=wens@csie$(echo .)org \
--cc=will@kernel$(echo .)org \
--cc=wintera@linux$(echo .)ibm.com \
--cc=yong.wu@mediatek$(echo .)com \
--cc=zhang.lyra@gmail$(echo .)com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox