From: Dan Williams <dan.j.williams@intel.com>
To: Matan Barak <matanb@dev.mellanox.co.il>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
Christoph Hellwig <hch@lst.de>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
Jan Kara <jack@suse.cz>, Ashok Raj <ashok.raj@intel.com>,
"Darrick J. Wong" <darrick.wong@oracle.com>,
linux-rdma <linux-rdma@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Joerg Roedel <joro@8bytes.org>,
Dave Chinner <david@fromorbit.com>,
linux-xfs@vger.kernel.org, Linux MM <linux-mm@kvack.org>,
Jeff Moyer <jmoyer@redhat.com>,
Linux API <linux-api@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Ross Zwisler <ross.zwisler@linux.intel.com>,
David Woodhouse <dwmw2@infradead.org>,
Robin Murphy <robin.murphy@arm.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Liran Liss <liranl@mellanox.com>
Subject: Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu()
Date: Sun, 15 Oct 2017 08:21:25 -0700 [thread overview]
Message-ID: <CAPcyv4gBbTr6qbR0AQb1uwWoYQZCwPLGSLdkv4dQP3RUm9XhUw@mail.gmail.com> (raw)
In-Reply-To: <CAAKD3BBR2CmQvg-3bqPog0VFrEm=QU-b-xBDH-_Q+sXV9NkFUA@mail.gmail.com>
On Sun, Oct 15, 2017 at 8:14 AM, Matan Barak <matanb@dev.mellanox.co.il> wrote:
[..]
> IMHO, using iommu for that and causing DMA errors just because the
> lease broke isn't the right thing to do.
Yes, see the current proposal over in this thread:
https://lists.01.org/pipermail/linux-nvdimm/2017-October/012885.html
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WARNING: multiple messages have this Message-ID (diff)
From: Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Matan Barak <matanb-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org>
Cc: Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>,
Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>,
"linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org"
<linux-nvdimm-hn68Rpc1hR1g9hUCZPvPmw@public.gmane.org>,
Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>,
Ashok Raj <ashok.raj-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"Darrick J. Wong"
<darrick.wong-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
linux-rdma <linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
Joerg Roedel <joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org>,
Dave Chinner <david-FqsqvQoI3Ljby3iVrkZq2A@public.gmane.org>,
linux-xfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Linux MM <linux-mm-Bw31MaZKKs3YtjvyW6yDsg@public.gmane.org>,
Jeff Moyer <jmoyer-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
Linux API <linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
linux-fsdevel
<linux-fsdevel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Ross Zwisler
<ross.zwisler-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>,
David Woodhouse <dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>,
Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>,
Marek Szyprowski
<m.szyprowski-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>,
Liran Liss <liranl@mellan>
Subject: Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu()
Date: Sun, 15 Oct 2017 08:21:25 -0700 [thread overview]
Message-ID: <CAPcyv4gBbTr6qbR0AQb1uwWoYQZCwPLGSLdkv4dQP3RUm9XhUw@mail.gmail.com> (raw)
In-Reply-To: <CAAKD3BBR2CmQvg-3bqPog0VFrEm=QU-b-xBDH-_Q+sXV9NkFUA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
On Sun, Oct 15, 2017 at 8:14 AM, Matan Barak <matanb-LDSdmyG8hGV8YrgS2mwiifqBs+8SCbDb@public.gmane.org> wrote:
[..]
> IMHO, using iommu for that and causing DMA errors just because the
> lease broke isn't the right thing to do.
Yes, see the current proposal over in this thread:
https://lists.01.org/pipermail/linux-nvdimm/2017-October/012885.html
WARNING: multiple messages have this Message-ID (diff)
From: Dan Williams <dan.j.williams@intel.com>
To: Matan Barak <matanb@dev.mellanox.co.il>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
Christoph Hellwig <hch@lst.de>,
"linux-nvdimm@lists.01.org" <linux-nvdimm@lists.01.org>,
Jan Kara <jack@suse.cz>, Ashok Raj <ashok.raj@intel.com>,
"Darrick J. Wong" <darrick.wong@oracle.com>,
linux-rdma <linux-rdma@vger.kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Joerg Roedel <joro@8bytes.org>,
Dave Chinner <david@fromorbit.com>,
linux-xfs@vger.kernel.org, Linux MM <linux-mm@kvack.org>,
Jeff Moyer <jmoyer@redhat.com>,
Linux API <linux-api@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Ross Zwisler <ross.zwisler@linux.intel.com>,
David Woodhouse <dwmw2@infradead.org>,
Robin Murphy <robin.murphy@arm.com>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Liran Liss <liranl@mellanox.com>
Subject: Re: [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu()
Date: Sun, 15 Oct 2017 08:21:25 -0700 [thread overview]
Message-ID: <CAPcyv4gBbTr6qbR0AQb1uwWoYQZCwPLGSLdkv4dQP3RUm9XhUw@mail.gmail.com> (raw)
In-Reply-To: <CAAKD3BBR2CmQvg-3bqPog0VFrEm=QU-b-xBDH-_Q+sXV9NkFUA@mail.gmail.com>
On Sun, Oct 15, 2017 at 8:14 AM, Matan Barak <matanb@dev.mellanox.co.il> wrote:
[..]
> IMHO, using iommu for that and causing DMA errors just because the
> lease broke isn't the right thing to do.
Yes, see the current proposal over in this thread:
https://lists.01.org/pipermail/linux-nvdimm/2017-October/012885.html
next prev parent reply other threads:[~2017-10-15 15:21 UTC|newest]
Thread overview: 158+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-06 22:35 [PATCH v7 00/12] MAP_DIRECT for DAX RDMA and userspace flush Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` [PATCH v7 01/12] mm: introduce MAP_SHARED_VALIDATE, a mechanism to safely define new mmap flags Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` [PATCH v7 02/12] fs, mm: pass fd to ->mmap_validate() Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` [PATCH v7 03/12] fs: introduce i_mapdcount Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-09 3:08 ` Dave Chinner
2017-10-09 3:08 ` Dave Chinner
2017-10-09 3:08 ` Dave Chinner
2017-10-09 3:08 ` Dave Chinner
2017-10-06 22:35 ` [PATCH v7 04/12] fs: MAP_DIRECT core Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` [PATCH v7 05/12] xfs: prepare xfs_break_layouts() for reuse with MAP_DIRECT Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` [PATCH v7 06/12] xfs: wire up MAP_DIRECT Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-09 3:40 ` Dave Chinner
2017-10-09 3:40 ` Dave Chinner
2017-10-09 3:40 ` Dave Chinner
2017-10-09 17:08 ` Dan Williams
2017-10-09 17:08 ` Dan Williams
2017-10-09 17:08 ` Dan Williams
2017-10-09 22:50 ` Dave Chinner
2017-10-09 22:50 ` Dave Chinner
2017-10-06 22:35 ` [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:35 ` Dan Williams
2017-10-06 22:45 ` David Woodhouse
2017-10-06 22:45 ` David Woodhouse
2017-10-06 22:45 ` David Woodhouse
2017-10-06 22:52 ` Dan Williams
2017-10-06 22:52 ` Dan Williams
2017-10-06 22:52 ` Dan Williams
2017-10-06 22:52 ` Dan Williams
2017-10-06 23:10 ` David Woodhouse
2017-10-06 23:10 ` David Woodhouse
2017-10-06 23:10 ` David Woodhouse
2017-10-06 23:15 ` Dan Williams
2017-10-06 23:15 ` Dan Williams
2017-10-06 23:15 ` Dan Williams
2017-10-06 23:15 ` Dan Williams
2017-10-07 11:08 ` David Woodhouse
2017-10-07 11:08 ` David Woodhouse
2017-10-07 23:33 ` Dan Williams
2017-10-07 23:33 ` Dan Williams
2017-10-07 23:33 ` Dan Williams
2017-10-07 23:33 ` Dan Williams
2017-10-06 23:12 ` Dan Williams
2017-10-06 23:12 ` Dan Williams
2017-10-08 3:45 ` [PATCH v8] dma-mapping: introduce dma_get_iommu_domain() Dan Williams
2017-10-08 3:45 ` Dan Williams
2017-10-08 3:45 ` Dan Williams
2017-10-09 10:37 ` Robin Murphy
2017-10-09 10:37 ` Robin Murphy
2017-10-09 10:37 ` Robin Murphy
2017-10-09 10:37 ` Robin Murphy
2017-10-09 17:32 ` Dan Williams
2017-10-09 17:32 ` Dan Williams
2017-10-10 14:40 ` Raj, Ashok
2017-10-10 14:40 ` Raj, Ashok
2017-10-09 18:58 ` [PATCH v7 07/12] dma-mapping: introduce dma_has_iommu() Jason Gunthorpe
2017-10-09 18:58 ` Jason Gunthorpe
2017-10-09 18:58 ` Jason Gunthorpe
2017-10-09 18:58 ` Jason Gunthorpe
2017-10-09 19:05 ` Dan Williams
2017-10-09 19:05 ` Dan Williams
2017-10-09 19:18 ` Jason Gunthorpe
2017-10-09 19:18 ` Jason Gunthorpe
2017-10-09 19:18 ` Jason Gunthorpe
2017-10-09 19:18 ` Jason Gunthorpe
2017-10-09 19:28 ` Dan Williams
2017-10-09 19:28 ` Dan Williams
2017-10-09 19:28 ` Dan Williams
2017-10-09 19:28 ` Dan Williams
2017-10-10 17:25 ` Jason Gunthorpe
2017-10-10 17:25 ` Jason Gunthorpe
2017-10-10 17:25 ` Jason Gunthorpe
2017-10-10 17:25 ` Jason Gunthorpe
2017-10-10 17:39 ` Dan Williams
2017-10-10 17:39 ` Dan Williams
2017-10-10 17:39 ` Dan Williams
2017-10-10 17:39 ` Dan Williams
2017-10-10 18:05 ` Jason Gunthorpe
2017-10-10 18:05 ` Jason Gunthorpe
2017-10-10 18:05 ` Jason Gunthorpe
2017-10-10 18:05 ` Jason Gunthorpe
2017-10-10 20:17 ` Dan Williams
2017-10-10 20:17 ` Dan Williams
2017-10-10 20:17 ` Dan Williams
2017-10-12 18:27 ` Jason Gunthorpe
2017-10-12 18:27 ` Jason Gunthorpe
2017-10-12 18:27 ` Jason Gunthorpe
2017-10-12 20:10 ` Dan Williams
2017-10-12 20:10 ` Dan Williams
2017-10-13 6:50 ` Christoph Hellwig
2017-10-13 6:50 ` Christoph Hellwig
2017-10-13 6:50 ` Christoph Hellwig
2017-10-13 15:03 ` Jason Gunthorpe
2017-10-13 15:03 ` Jason Gunthorpe
2017-10-13 15:03 ` Jason Gunthorpe
2017-10-13 15:03 ` Jason Gunthorpe
2017-10-15 15:14 ` Matan Barak
2017-10-15 15:14 ` Matan Barak
2017-10-15 15:14 ` Matan Barak
2017-10-15 15:14 ` Matan Barak
2017-10-15 15:21 ` Dan Williams [this message]
2017-10-15 15:21 ` Dan Williams
2017-10-15 15:21 ` Dan Williams
2017-10-13 7:09 ` Christoph Hellwig
2017-10-13 7:09 ` Christoph Hellwig
2017-10-13 7:09 ` Christoph Hellwig
2017-10-06 22:36 ` [PATCH v7 08/12] fs, mapdirect: introduce ->lease_direct() Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-06 22:36 ` [PATCH v7 09/12] xfs: wire up ->lease_direct() Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-09 3:45 ` Dave Chinner
2017-10-09 3:45 ` Dave Chinner
2017-10-09 3:45 ` Dave Chinner
2017-10-09 3:45 ` Dave Chinner
2017-10-09 17:10 ` Dan Williams
2017-10-09 17:10 ` Dan Williams
2017-10-06 22:36 ` [PATCH v7 10/12] device-dax: " Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-06 22:36 ` [PATCH v7 11/12] IB/core: use MAP_DIRECT to fix / enable RDMA to DAX mappings Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-08 4:02 ` [PATCH v8 1/2] iommu: up-level sg_num_pages() from amd-iommu Dan Williams
2017-10-08 4:02 ` Dan Williams
2017-10-08 4:02 ` Dan Williams
2017-10-08 4:04 ` [PATCH v8 2/2] IB/core: use MAP_DIRECT to fix / enable RDMA to DAX mappings Dan Williams
2017-10-08 4:04 ` Dan Williams
2017-10-08 4:04 ` Dan Williams
2017-10-08 6:45 ` kbuild test robot
2017-10-08 6:45 ` kbuild test robot
2017-10-08 6:45 ` kbuild test robot
2017-10-08 15:49 ` Dan Williams
2017-10-08 15:49 ` Dan Williams
2017-10-08 15:49 ` Dan Williams
2017-10-06 22:36 ` [PATCH v7 12/12] tools/testing/nvdimm: enable rdma unit tests Dan Williams
2017-10-06 22:36 ` Dan Williams
2017-10-06 22:36 ` Dan Williams
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