netdev - Re: [PATCH v12 0/6] iommu/dma: s390 DMA API conversion and optimized IOTLB flushing

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Date: Tue, 26 Sep 2023 13:08:32 -0300
From: Jason Gunthorpe <jgg@...pe.ca>
To: Joerg Roedel <joro@...tes.org>
Cc: Niklas Schnelle <schnelle@...ux.ibm.com>,
	Matthew Rosato <mjrosato@...ux.ibm.com>,
	Will Deacon <will@...nel.org>, Wenjia Zhang <wenjia@...ux.ibm.com>,
	Robin Murphy <robin.murphy@....com>,
	Gerd Bayer <gbayer@...ux.ibm.com>,
	Julian Ruess <julianr@...ux.ibm.com>,
	Pierre Morel <pmorel@...ux.ibm.com>,
	Alexandra Winter <wintera@...ux.ibm.com>,
	Heiko Carstens <hca@...ux.ibm.com>,
	Vasily Gorbik <gor@...ux.ibm.com>,
	Alexander Gordeev <agordeev@...ux.ibm.com>,
	Christian Borntraeger <borntraeger@...ux.ibm.com>,
	Sven Schnelle <svens@...ux.ibm.com>,
	Suravee Suthikulpanit <suravee.suthikulpanit@....com>,
	Hector Martin <marcan@...can.st>, Sven Peter <sven@...npeter.dev>,
	Alyssa Rosenzweig <alyssa@...enzweig.io>,
	David Woodhouse <dwmw2@...radead.org>,
	Lu Baolu <baolu.lu@...ux.intel.com>, Andy Gross <agross@...nel.org>,
	Bjorn Andersson <andersson@...nel.org>,
	Konrad Dybcio <konrad.dybcio@...aro.org>,
	Yong Wu <yong.wu@...iatek.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Gerald Schaefer <gerald.schaefer@...ux.ibm.com>,
	Orson Zhai <orsonzhai@...il.com>,
	Baolin Wang <baolin.wang@...ux.alibaba.com>,
	Chunyan Zhang <zhang.lyra@...il.com>, Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>,
	Thierry Reding <thierry.reding@...il.com>,
	Krishna Reddy <vdumpa@...dia.com>,
	Jonathan Hunter <jonathanh@...dia.com>,
	Jonathan Corbet <corbet@....net>, linux-s390@...r.kernel.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	iommu@...ts.linux.dev, asahi@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org, linux-arm-msm@...r.kernel.org,
	linux-mediatek@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
	linux-tegra@...r.kernel.org, linux-doc@...r.kernel.org
Subject: Re: [PATCH v12 0/6] iommu/dma: s390 DMA API conversion and optimized
 IOTLB flushing

On Tue, Sep 26, 2023 at 05:04:28PM +0200, Joerg Roedel wrote:
> Hi Niklas,
> 
> On Fri, Aug 25, 2023 at 12:11:15PM +0200, Niklas Schnelle wrote:
> > Niklas Schnelle (6):
> >       iommu: Allow .iotlb_sync_map to fail and handle s390's -ENOMEM return
> >       s390/pci: prepare is_passed_through() for dma-iommu
> >       s390/pci: Use dma-iommu layer
> >       iommu/s390: Disable deferred flush for ISM devices
> >       iommu/dma: Allow a single FQ in addition to per-CPU FQs
> >       iommu/dma: Use a large flush queue and timeout for shadow_on_flush
> 
> Turned out this series has non-trivial conflicts with Jasons
> default-domain work so I had to remove it from the IOMMU tree for now.
> Can you please rebase it to the latest iommu/core branch and re-send? I
> will take it into the tree again then.

Niklas, I think you just 'take yours' to resolve this. All the
IOMMU_DOMAIN_PLATFORM related and .default_domain = parts should be
removed. Let me know if you need anything

Thanks,
Jason