From: Jason Gunthorpe <jgg@nvidia.com>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: kvm@vger.kernel.org, Kevin Tian <kevin.tian@intel.com>,
dri-devel@lists.freedesktop.org,
Vineeth Vijayan <vneethv@linux.ibm.com>,
Diana Craciun <diana.craciun@oss.nxp.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Longfang Liu <liulongfang@huawei.com>,
linux-s390@vger.kernel.org, Yi Liu <yi.l.liu@intel.com>,
Matthew Rosato <mjrosato@linux.ibm.com>,
Will Deacon <will@kernel.org>, Joerg Roedel <joro@8bytes.org>,
Halil Pasic <pasic@linux.ibm.com>,
iommu@lists.linux.dev, Nicolin Chen <nicolinc@nvidia.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
intel-gfx@lists.freedesktop.org, Zhi Wang <zhi.a.wang@intel.com>,
Jason Herne <jjherne@linux.ibm.com>,
Eric Farman <farman@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Eric Auger <eric.auger@redhat.com>,
Harald Freudenberger <freude@linux.ibm.com>,
Rodrigo Vivi <rodrigo.vivi@intel.com>,
intel-gvt-dev@lists.freedesktop.org,
Tony Krowiak <akrowiak@linux.ibm.com>,
Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
Yishai Hadas <yishaih@nvidia.com>,
Cornelia Huck <cohuck@redhat.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>,
Sven Schnelle <svens@linux.ibm.com>,
Robin Murphy <robin.murphy@arm.com>,
Lu Baolu <baolu.lu@linux.intel.com>
Subject: Re: [PATCH 10/10] iommufd: Allow iommufd to supply /dev/vfio/vfio
Date: Fri, 28 Oct 2022 15:44:36 -0300 [thread overview]
Message-ID: <Y1wjFNxwPRm7S6yZ@nvidia.com> (raw)
In-Reply-To: <20221026153133.44dc05c8.alex.williamson@redhat.com>
On Wed, Oct 26, 2022 at 03:31:33PM -0600, Alex Williamson wrote:
> On Tue, 25 Oct 2022 15:50:45 -0300
> Jason Gunthorpe <jgg@nvidia.com> wrote:
>
> > If the VFIO container is compiled out, give a kconfig option for iommufd
> > to provide the miscdev node with the same name and permissions as vfio
> > uses.
> >
> > The compatibility node supports the same ioctls as VFIO and automatically
> > enables the VFIO compatible pinned page accounting mode.
>
> I think I'd like to see some sort of breadcrumb when /dev/vfio/vfio is
> provided by something other than the vfio container code. If we intend
> to include this before P2P is resolved, that breadcrumb
I don't belive I can get P2P done soon enough. I plan to do it after
this is merged. Right now these two series are taking all my time.
> (dmesg I'm guessing) might also list any known limitations of the
> compatibility to save time with debugging. Thanks,
Yes, that makes sense.
Do you want a dmesg at module load time, on every open, or a sysfs
something? What seems like it would make it into a bug report?
Thanks,
Jason
next prev parent reply other threads:[~2022-10-28 18:44 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-25 18:17 [PATCH 00/10] Connect VFIO to IOMMUFD Jason Gunthorpe
2022-10-25 18:17 ` [PATCH 01/10] vfio: Move vfio_device driver open/close code to a function Jason Gunthorpe
2022-11-01 7:33 ` Tian, Kevin
2022-11-01 12:12 ` Jason Gunthorpe
2022-11-01 14:36 ` Yi Liu
2022-10-25 18:17 ` [PATCH 02/10] vfio: Move vfio_device_assign_container() into vfio_device_first_open() Jason Gunthorpe
2022-11-01 7:38 ` Tian, Kevin
2022-11-01 12:14 ` Jason Gunthorpe
2022-11-01 14:37 ` Yi Liu
2022-11-01 17:37 ` Jason Gunthorpe
2022-10-25 18:17 ` [PATCH 03/10] vfio: Rename vfio_device_assign/unassign_container() Jason Gunthorpe
2022-11-01 7:39 ` Tian, Kevin
2022-11-01 14:39 ` Yi Liu
2022-10-25 18:17 ` [PATCH 04/10] vfio: Move storage of allow_unsafe_interrupts to vfio_main.c Jason Gunthorpe
2022-10-26 21:24 ` Alex Williamson
2022-10-28 18:40 ` Jason Gunthorpe
2022-10-31 22:45 ` Alex Williamson
2022-11-07 13:19 ` Jason Gunthorpe
2022-11-07 15:18 ` Alex Williamson
2022-11-07 15:32 ` Jason Gunthorpe
2022-11-07 18:05 ` Alex Williamson
2022-11-07 18:45 ` Jason Gunthorpe
2022-11-08 22:55 ` Alex Williamson
2022-11-09 1:05 ` Jason Gunthorpe
2022-11-09 3:21 ` Tian, Kevin
2022-11-09 13:11 ` Jason Gunthorpe
2022-11-10 2:44 ` Tian, Kevin
2022-11-09 18:28 ` Alex Williamson
2022-11-10 19:19 ` Jason Gunthorpe
2022-10-25 18:17 ` [PATCH 05/10] vfio: Use IOMMU_CAP_ENFORCE_CACHE_COHERENCY for vfio_file_enforced_coherent() Jason Gunthorpe
2022-11-01 7:52 ` Tian, Kevin
2022-11-01 12:26 ` Jason Gunthorpe
2022-11-03 4:38 ` Tian, Kevin
2022-11-04 19:45 ` Jason Gunthorpe
2022-10-25 18:50 ` [PATCH 06/10] vfio-iommufd: Allow iommufd to be used in place of a container fd Jason Gunthorpe
2022-11-01 8:09 ` Tian, Kevin
2022-11-01 9:19 ` Nicolin Chen
2022-11-01 11:51 ` Jason Gunthorpe
2022-11-03 4:39 ` Tian, Kevin
2022-11-01 12:40 ` Jason Gunthorpe
2022-11-02 7:28 ` Yi Liu
2022-11-07 23:45 ` Jason Gunthorpe
2022-10-25 18:50 ` [PATCH 07/10] vfio-iommufd: Support iommufd for physical VFIO devices Jason Gunthorpe
2022-11-01 8:21 ` Tian, Kevin
2022-11-04 19:51 ` Jason Gunthorpe
2022-10-25 18:50 ` [PATCH 08/10] vfio-iommufd: Support iommufd for emulated " Jason Gunthorpe
2022-11-01 8:37 ` Tian, Kevin
2022-11-01 12:49 ` Jason Gunthorpe
2022-11-03 4:52 ` Tian, Kevin
2022-10-25 18:50 ` [PATCH 09/10] vfio: Make vfio_container optionally compiled Jason Gunthorpe
2022-11-01 8:41 ` Tian, Kevin
2022-11-01 12:56 ` Jason Gunthorpe
2022-10-25 18:50 ` [PATCH 10/10] iommufd: Allow iommufd to supply /dev/vfio/vfio Jason Gunthorpe
2022-10-26 21:31 ` Alex Williamson
2022-10-28 18:44 ` Jason Gunthorpe [this message]
2022-10-31 22:53 ` Alex Williamson
2022-11-07 13:57 ` Jason Gunthorpe
2022-10-28 23:53 ` [PATCH 00/10] Connect VFIO to IOMMUFD Nicolin Chen
2022-10-28 23:54 ` Nicolin Chen
2022-10-31 10:38 ` Yi Liu
2022-10-31 12:18 ` Jason Gunthorpe
2022-10-31 12:25 ` Yi Liu
2022-10-31 23:24 ` Jason Gunthorpe
2022-11-01 3:04 ` Yi Liu
2022-11-01 4:21 ` Nicolin Chen
2022-11-01 12:54 ` Yi Liu
2022-11-01 11:41 ` Jason Gunthorpe
2022-11-01 12:55 ` Yi Liu
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