From: Jason Gunthorpe <jgg@nvidia.com>
To: Yi Liu <yi.l.liu@intel.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
"Peng, Chao P" <chao.p.peng@intel.com>,
"Sun, Yi Y" <yi.y.sun@intel.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"david@gibson.dropbear.id.au" <david@gibson.dropbear.id.au>,
"thuth@redhat.com" <thuth@redhat.com>,
"farman@linux.ibm.com" <farman@linux.ibm.com>,
"mjrosato@linux.ibm.com" <mjrosato@linux.ibm.com>,
"akrowiak@linux.ibm.com" <akrowiak@linux.ibm.com>,
"pasic@linux.ibm.com" <pasic@linux.ibm.com>,
"jjherne@linux.ibm.com" <jjherne@linux.ibm.com>,
"jasowang@redhat.com" <jasowang@redhat.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"nicolinc@nvidia.com" <nicolinc@nvidia.com>,
"eric.auger@redhat.com" <eric.auger@redhat.com>,
"eric.auger.pro@gmail.com" <eric.auger.pro@gmail.com>,
"peterx@redhat.com" <peterx@redhat.com>
Subject: Re: [RFC 15/18] vfio/iommufd: Implement iommufd backend
Date: Tue, 26 Apr 2022 10:53:45 -0300 [thread overview]
Message-ID: <20220426135345.GN2125828@nvidia.com> (raw)
In-Reply-To: <3576770b-e4c2-cf11-da0c-821c55ab9902@intel.com>
On Tue, Apr 26, 2022 at 05:55:29PM +0800, Yi Liu wrote:
> > I also suggest falling back to using "/dev/char/%u:%u" if the above
> > does not exist which prevents "vfio/devices/vfio" from turning into
> > ABI.
>
> do you mean there is no matched file under /dev/vfio/devices/? Is this
> possible?
The layout of /dev/ depens on udev rules, so it is possible. I only
suggested it to avoid creating ABI here.
> > It would be a good idea to make a general open_cdev function that does
> > all this work once the sysfs is found and cdev read out of it, all the
> > other vfio places can use it too.
>
> hmmm, it's good to have a general open_cdev() function. But I guess this
> is the only place in VFIO to open the device cdev. Do you mean the vdpa
> stuffes?
Any place that starts from a sysfs name would be interested - I don't
know what vdpa does
Jason
next prev parent reply other threads:[~2022-04-26 13:53 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-14 10:46 [RFC 00/18] vfio: Adopt iommufd Yi Liu
2022-04-14 10:46 ` [RFC 01/18] scripts/update-linux-headers: Add iommufd.h Yi Liu
2022-04-14 10:46 ` [RFC 02/18] linux-headers: Import latest vfio.h and iommufd.h Yi Liu
2022-04-14 10:46 ` [RFC 03/18] hw/vfio/pci: fix vfio_pci_hot_reset_result trace point Yi Liu
2022-04-14 10:46 ` [RFC 04/18] vfio/pci: Use vbasedev local variable in vfio_realize() Yi Liu
2022-04-14 10:46 ` [RFC 05/18] vfio/common: Rename VFIOGuestIOMMU::iommu into ::iommu_mr Yi Liu
2022-04-14 10:46 ` [RFC 07/18] vfio: Add base object for VFIOContainer Yi Liu
2022-04-29 6:29 ` David Gibson
2022-05-03 13:05 ` Yi Liu
2022-04-14 10:47 ` [RFC 08/18] vfio/container: Introduce vfio_[attach/detach]_device Yi Liu
2022-04-14 10:47 ` [RFC 09/18] vfio/platform: Use vfio_[attach/detach]_device Yi Liu
2022-04-14 10:47 ` [RFC 10/18] vfio/ap: " Yi Liu
2022-04-14 10:47 ` [RFC 11/18] vfio/ccw: " Yi Liu
2022-04-14 10:47 ` [RFC 12/18] vfio/container-obj: Introduce [attach/detach]_device container callbacks Yi Liu
2022-04-14 10:47 ` [RFC 13/18] vfio/container-obj: Introduce VFIOContainer reset callback Yi Liu
2022-04-14 10:47 ` [RFC 14/18] hw/iommufd: Creation Yi Liu
2022-04-14 10:47 ` [RFC 15/18] vfio/iommufd: Implement iommufd backend Yi Liu
2022-04-22 14:58 ` Jason Gunthorpe
2022-04-22 21:33 ` Alex Williamson
2022-04-26 9:55 ` Yi Liu
2022-04-26 10:41 ` Tian, Kevin
2022-04-26 13:41 ` Jason Gunthorpe
2022-04-26 14:08 ` Yi Liu
2022-04-26 14:11 ` Jason Gunthorpe
2022-04-26 18:45 ` Alex Williamson
2022-04-26 19:27 ` Jason Gunthorpe
2022-04-26 20:59 ` Alex Williamson
2022-04-26 23:08 ` Jason Gunthorpe
2022-04-26 13:53 ` Jason Gunthorpe [this message]
2022-04-14 10:47 ` [RFC 16/18] vfio/iommufd: Add IOAS_COPY_DMA support Yi Liu
2022-04-14 10:47 ` [RFC 17/18] vfio/as: Allow the selection of a given iommu backend Yi Liu
2022-04-14 10:47 ` [RFC 18/18] vfio/pci: Add an iommufd option Yi Liu
2022-04-15 8:37 ` [RFC 00/18] vfio: Adopt iommufd Nicolin Chen
2022-04-17 10:30 ` Eric Auger
2022-04-19 3:26 ` Nicolin Chen
2022-04-25 19:40 ` Eric Auger
2022-04-18 8:49 ` Tian, Kevin
2022-04-18 12:09 ` Yi Liu
2022-04-25 19:51 ` Eric Auger
2022-04-25 19:55 ` Eric Auger
2022-04-26 8:39 ` Tian, Kevin
2022-04-22 22:09 ` Alex Williamson
2022-04-25 10:10 ` Daniel P. Berrangé
2022-04-25 13:36 ` Jason Gunthorpe
2022-04-25 14:37 ` Alex Williamson
2022-04-26 8:37 ` Tian, Kevin
2022-04-26 12:33 ` Jason Gunthorpe
2022-04-26 16:21 ` Alex Williamson
2022-04-26 16:42 ` Jason Gunthorpe
2022-04-26 19:24 ` Alex Williamson
2022-04-26 19:36 ` Jason Gunthorpe
2022-04-28 3:21 ` Tian, Kevin
2022-04-28 14:24 ` Alex Williamson
2022-04-28 16:20 ` Daniel P. Berrangé
2022-04-29 0:45 ` Tian, Kevin
2022-04-25 20:23 ` Eric Auger
2022-04-25 22:53 ` Alex Williamson
2022-04-26 9:47 ` Shameerali Kolothum Thodi
2022-04-26 11:44 ` Eric Auger
2022-04-26 12:43 ` Shameerali Kolothum Thodi
2022-04-26 16:35 ` Alex Williamson
2022-05-09 14:24 ` Zhangfei Gao
2022-05-10 3:17 ` Yi Liu
2022-05-10 6:51 ` Eric Auger
2022-05-10 12:35 ` Zhangfei Gao
2022-05-10 12:45 ` Jason Gunthorpe
2022-05-10 14:08 ` Yi Liu
2022-05-11 14:17 ` zhangfei.gao
2022-05-12 9:01 ` zhangfei.gao
2022-05-17 8:55 ` Yi Liu
2022-05-18 7:22 ` zhangfei.gao
2022-05-18 14:00 ` Yi Liu
2022-06-28 8:14 ` Shameerali Kolothum Thodi
2022-06-28 8:58 ` Eric Auger
2022-05-17 8:52 ` Yi Liu
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=20220426135345.GN2125828@nvidia.com \
--to=jgg@nvidia.com \
--cc=akrowiak@linux.ibm.com \
--cc=chao.p.peng@intel.com \
--cc=david@gibson.dropbear.id.au \
--cc=eric.auger.pro@gmail.com \
--cc=eric.auger@redhat.com \
--cc=farman@linux.ibm.com \
--cc=jasowang@redhat.com \
--cc=jjherne@linux.ibm.com \
--cc=kevin.tian@intel.com \
--cc=kvm@vger.kernel.org \
--cc=mjrosato@linux.ibm.com \
--cc=nicolinc@nvidia.com \
--cc=pasic@linux.ibm.com \
--cc=peterx@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=thuth@redhat.com \
--cc=yi.l.liu@intel.com \
--cc=yi.y.sun@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
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;
as well as URLs for NNTP newsgroup(s).