From: Christoph Hellwig <hch@lst•de>
To: Jason Gunthorpe <jgg@nvidia•com>
Cc: Christoph Hellwig <hch@lst•de>,
Robin Murphy <robin.murphy@arm•com>,
Alex Williamson <alex.williamson@redhat•com>,
Lu Baolu <baolu.lu@linux•intel.com>,
Christian Benvenuti <benve@cisco•com>,
Cornelia Huck <cohuck@redhat•com>,
David Woodhouse <dwmw2@infradead•org>,
Gerald Schaefer <gerald.schaefer@linux•ibm.com>,
iommu@lists•linux-foundation.org,
Jason Wang <jasowang@redhat•com>, Joerg Roedel <joro@8bytes•org>,
kvm@vger•kernel.org, linux-arm-kernel@lists•infradead.org,
linux-arm-msm@vger•kernel.org, linux-rdma@vger•kernel.org,
linux-s390@vger•kernel.org,
Matthew Rosato <mjrosato@linux•ibm.com>,
"Michael S. Tsirkin" <mst@redhat•com>,
Nelson Escobar <neescoba@cisco•com>,
netdev@vger•kernel.org, Rob Clark <robdclark@gmail•com>,
Suravee Suthikulpanit <suravee.suthikulpanit@amd•com>,
virtualization@lists•linux-foundation.org,
Will Deacon <will@kernel•org>,
"Tian, Kevin" <kevin.tian@intel•com>
Subject: Re: [PATCH 1/5] iommu: Replace uses of IOMMU_CAP_CACHE_COHERENCY with dev_is_dma_coherent()
Date: Wed, 6 Apr 2022 18:10:31 +0200 [thread overview]
Message-ID: <20220406161031.GA31790@lst.de> (raw)
In-Reply-To: <20220406160623.GI2120790@nvidia.com>
On Wed, Apr 06, 2022 at 01:06:23PM -0300, Jason Gunthorpe wrote:
> On Wed, Apr 06, 2022 at 05:50:56PM +0200, Christoph Hellwig wrote:
> > On Wed, Apr 06, 2022 at 12:18:23PM -0300, Jason Gunthorpe wrote:
> > > > Oh, I didn't know about device_get_dma_attr()..
> >
> > Which is completely broken for any non-OF, non-ACPI plaform.
>
> I saw that, but I spent some time searching and could not find an
> iommu driver that would load independently of OF or ACPI. ie no IOMMU
> platform drivers are created by board files. Things like Intel/AMD
> discover only from ACPI, etc.
s390?
next prev parent reply other threads:[~2022-04-06 17:58 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-05 16:15 [PATCH 0/5] Make the iommu driver no-snoop block feature consistent Jason Gunthorpe
2022-04-05 16:16 ` [PATCH 1/5] iommu: Replace uses of IOMMU_CAP_CACHE_COHERENCY with dev_is_dma_coherent() Jason Gunthorpe
2022-04-06 5:30 ` Christoph Hellwig
2022-04-06 12:07 ` Jason Gunthorpe
2022-04-06 13:51 ` Christoph Hellwig
2022-04-06 14:14 ` Jason Gunthorpe
2022-04-06 15:47 ` Christoph Hellwig
2022-04-06 15:48 ` Jason Gunthorpe
2022-04-06 15:48 ` Robin Murphy
2022-04-06 13:56 ` Robin Murphy
2022-04-06 14:24 ` Jason Gunthorpe
2022-04-06 15:18 ` Jason Gunthorpe
2022-04-06 15:50 ` Christoph Hellwig
2022-04-06 16:06 ` Jason Gunthorpe
2022-04-06 16:10 ` Christoph Hellwig [this message]
2022-04-06 17:17 ` Jason Gunthorpe
2022-04-07 7:18 ` Tian, Kevin
2022-04-07 13:59 ` Jason Gunthorpe
2022-04-07 15:17 ` Robin Murphy
2022-04-07 15:23 ` Jason Gunthorpe
2022-04-07 22:37 ` Alex Williamson
2022-04-07 15:31 ` Christoph Hellwig
2022-04-07 8:53 ` Niklas Schnelle
2022-04-05 16:16 ` [PATCH 2/5] vfio: Require that devices support DMA cache coherence Jason Gunthorpe
2022-04-05 19:10 ` Alex Williamson
2022-04-05 19:29 ` Jason Gunthorpe
2022-04-06 7:02 ` Tian, Kevin
2022-04-07 14:53 ` Jason Gunthorpe
2022-04-05 16:16 ` [PATCH 3/5] iommu: Introduce the domain op enforce_cache_coherency() Jason Gunthorpe
2022-04-05 19:50 ` Alex Williamson
2022-04-05 22:57 ` Jason Gunthorpe
2022-04-05 23:31 ` Tian, Kevin
2022-04-06 0:08 ` Tian, Kevin
2022-04-06 7:09 ` Tian, Kevin
2022-04-06 12:27 ` Jason Gunthorpe
2022-04-05 16:16 ` [PATCH 4/5] vfio: Move the Intel no-snoop control off of IOMMU_CACHE Jason Gunthorpe
2022-04-05 16:16 ` [PATCH 5/5] iommu: Delete IOMMU_CAP_CACHE_COHERENCY Jason Gunthorpe
2022-04-06 6:52 ` [PATCH 0/5] Make the iommu driver no-snoop block feature consistent Tian, Kevin
2022-04-07 14:56 ` Jason Gunthorpe
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