From: Jason Gunthorpe via iommu <iommu@lists.linux-foundation.org> To: Cornelia Huck <cohuck@redhat.com> Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>, "jasowang@redhat.com" <jasowang@redhat.com>, "kwankhede@nvidia.com" <kwankhede@nvidia.com>, "hch@lst.de" <hch@lst.de>, "jean-philippe@linaro.org" <jean-philippe@linaro.org>, "Jiang, Dave" <dave.jiang@intel.com>, "Raj, Ashok" <ashok.raj@intel.com>, "corbet@lwn.net" <corbet@lwn.net>, "Tian, Kevin" <kevin.tian@intel.com>, "parav@mellanox.com" <parav@mellanox.com>, "alex.williamson@redhat.com" <alex.williamson@redhat.com>, "lkml@metux.net" <lkml@metux.net>, David Gibson <david@gibson.dropbear.id.au>, "dwmw2@infradead.org" <dwmw2@infradead.org>, "Tian, Jun J" <jun.j.tian@intel.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "lushenming@huawei.com" <lushenming@huawei.com>, "iommu@lists.linux-foundation.org" <iommu@lists.linux-foundation.org>, "pbonzini@redhat.com" <pbonzini@redhat.com>, "robin.murphy@arm.com" <robin.murphy@arm.com> Subject: Re: [RFC 03/20] vfio: Add vfio_[un]register_device() Date: Wed, 29 Sep 2021 09:15:15 -0300 [thread overview] Message-ID: <20210929121515.GN964074@nvidia.com> (raw) In-Reply-To: <871r576eqe.fsf@redhat.com> On Wed, Sep 29, 2021 at 09:08:25AM +0200, Cornelia Huck wrote: > On Wed, Sep 29 2021, "Tian, Kevin" <kevin.tian@intel.com> wrote: > > >> From: David Gibson <david@gibson.dropbear.id.au> > >> Sent: Wednesday, September 29, 2021 10:44 AM > >> > >> > One alternative option is to arrange device nodes in sub-directories based > >> > on the device type. But doing so also adds one trouble to userspace. The > >> > current vfio uAPI is designed to have the user query device type via > >> > VFIO_DEVICE_GET_INFO after opening the device. With this option the user > >> > instead needs to figure out the device type before opening the device, to > >> > identify the sub-directory. > >> > >> Wouldn't this be up to the operator / configuration, rather than the > >> actual software though? I would assume that typically the VFIO > >> program would be pointed at a specific vfio device node file to use, > >> e.g. > >> my-vfio-prog -d /dev/vfio/pci/0000:0a:03.1 > >> > >> Or more generally, if you're expecting userspace to know a name in a > >> uniqu pattern, they can equally well know a "type/name" pair. > >> > > > > You are correct. Currently: > > > > -device, vfio-pci,host=DDDD:BB:DD.F > > -device, vfio-pci,sysfdev=/sys/bus/pci/devices/ DDDD:BB:DD.F > > -device, vfio-platform,sysdev=/sys/bus/platform/devices/PNP0103:00 > > > > above is definitely type/name information to find the related node. > > > > Actually even for Jason's proposal we still need such information to > > identify the sysfs path. > > > > Then I feel type-based sub-directory does work. Adding another link > > to sysfs sounds unnecessary now. But I'm not sure whether we still > > want to create /dev/vfio/devices/vfio0 thing and related udev rule > > thing that you pointed out in another mail. > > Still reading through this whole thread, but type-based subdirectories > also make the most sense to me. I don't really see userspace wanting to > grab just any device and then figure out whether it is the device it was > looking for, but rather immediately go to a specific device or at least > a device of a specific type. Even so the kernel should not be creating this, that is a job for udev and some symlinks > Sequentially-numbered devices tend to become really unwieldy in my > experience if you are working on a system with loads of devices. If the user experiance is always to refer to the sysfs node as Kevin shows above then the user never sees the integer. It is very much like how the group number works already, programs always start at the sysfs, do the readlink thing on iommu_group and then get the group number to go to /dev/vfio/X So it is already the case that every piece of software can construct a sysfs path to the device, we are just changing from readlink(iommu_group) to readdir(vfio/vfio_device_XX) Jason _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Jason Gunthorpe <jgg@nvidia.com> To: Cornelia Huck <cohuck@redhat.com> Cc: "Tian, Kevin" <kevin.tian@intel.com>, David Gibson <david@gibson.dropbear.id.au>, "Liu, Yi L" <yi.l.liu@intel.com>, "alex.williamson@redhat.com" <alex.williamson@redhat.com>, "hch@lst.de" <hch@lst.de>, "jasowang@redhat.com" <jasowang@redhat.com>, "joro@8bytes.org" <joro@8bytes.org>, "jean-philippe@linaro.org" <jean-philippe@linaro.org>, "parav@mellanox.com" <parav@mellanox.com>, "lkml@metux.net" <lkml@metux.net>, "pbonzini@redhat.com" <pbonzini@redhat.com>, "lushenming@huawei.com" <lushenming@huawei.com>, "eric.auger@redhat.com" <eric.auger@redhat.com>, "corbet@lwn.net" <corbet@lwn.net>, "Raj, Ashok" <ashok.raj@intel.com>, "yi.l.liu@linux.intel.com" <yi.l.liu@linux.intel.com>, "Tian, Jun J" <jun.j.tian@intel.com>, "Wu, Hao" <hao.wu@intel.com>, "Jiang, Dave" <dave.jiang@intel.com>, "jacob.jun.pan@linux.intel.com" <jacob.jun.pan@linux.intel.com>, "kwankhede@nvidia.com" <kwankhede@nvidia.com>, "robin.murphy@arm.com" <robin.murphy@arm.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, "iommu@lists.linux-foundation.org" <iommu@lists.linux-foundation.org>, "dwmw2@infradead.org" <dwmw2@infradead.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "baolu.lu@linux.intel.com" <baolu.lu@linux.intel.com>, "nicolinc@nvidia.com" <nicolinc@nvidia.com> Subject: Re: [RFC 03/20] vfio: Add vfio_[un]register_device() Date: Wed, 29 Sep 2021 09:15:15 -0300 [thread overview] Message-ID: <20210929121515.GN964074@nvidia.com> (raw) In-Reply-To: <871r576eqe.fsf@redhat.com> On Wed, Sep 29, 2021 at 09:08:25AM +0200, Cornelia Huck wrote: > On Wed, Sep 29 2021, "Tian, Kevin" <kevin.tian@intel.com> wrote: > > >> From: David Gibson <david@gibson.dropbear.id.au> > >> Sent: Wednesday, September 29, 2021 10:44 AM > >> > >> > One alternative option is to arrange device nodes in sub-directories based > >> > on the device type. But doing so also adds one trouble to userspace. The > >> > current vfio uAPI is designed to have the user query device type via > >> > VFIO_DEVICE_GET_INFO after opening the device. With this option the user > >> > instead needs to figure out the device type before opening the device, to > >> > identify the sub-directory. > >> > >> Wouldn't this be up to the operator / configuration, rather than the > >> actual software though? I would assume that typically the VFIO > >> program would be pointed at a specific vfio device node file to use, > >> e.g. > >> my-vfio-prog -d /dev/vfio/pci/0000:0a:03.1 > >> > >> Or more generally, if you're expecting userspace to know a name in a > >> uniqu pattern, they can equally well know a "type/name" pair. > >> > > > > You are correct. Currently: > > > > -device, vfio-pci,host=DDDD:BB:DD.F > > -device, vfio-pci,sysfdev=/sys/bus/pci/devices/ DDDD:BB:DD.F > > -device, vfio-platform,sysdev=/sys/bus/platform/devices/PNP0103:00 > > > > above is definitely type/name information to find the related node. > > > > Actually even for Jason's proposal we still need such information to > > identify the sysfs path. > > > > Then I feel type-based sub-directory does work. Adding another link > > to sysfs sounds unnecessary now. But I'm not sure whether we still > > want to create /dev/vfio/devices/vfio0 thing and related udev rule > > thing that you pointed out in another mail. > > Still reading through this whole thread, but type-based subdirectories > also make the most sense to me. I don't really see userspace wanting to > grab just any device and then figure out whether it is the device it was > looking for, but rather immediately go to a specific device or at least > a device of a specific type. Even so the kernel should not be creating this, that is a job for udev and some symlinks > Sequentially-numbered devices tend to become really unwieldy in my > experience if you are working on a system with loads of devices. If the user experiance is always to refer to the sysfs node as Kevin shows above then the user never sees the integer. It is very much like how the group number works already, programs always start at the sysfs, do the readlink thing on iommu_group and then get the group number to go to /dev/vfio/X So it is already the case that every piece of software can construct a sysfs path to the device, we are just changing from readlink(iommu_group) to readdir(vfio/vfio_device_XX) Jason
next prev parent reply other threads:[~2021-09-29 12:15 UTC|newest] Thread overview: 537+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-09-19 6:38 [RFC 00/20] Introduce /dev/iommu for userspace I/O address space management Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-19 6:38 ` [RFC 01/20] iommu/iommufd: Add /dev/iommu core Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 15:41 ` Jason Gunthorpe 2021-09-21 15:41 ` Jason Gunthorpe via iommu 2021-09-22 1:51 ` Tian, Kevin 2021-09-22 1:51 ` Tian, Kevin 2021-09-22 12:40 ` Jason Gunthorpe 2021-09-22 12:40 ` Jason Gunthorpe via iommu 2021-09-22 13:59 ` Tian, Kevin 2021-09-22 13:59 ` Tian, Kevin 2021-09-22 14:10 ` Jason Gunthorpe 2021-09-22 14:10 ` Jason Gunthorpe via iommu 2021-10-15 9:18 ` Liu, Yi L 2021-10-15 9:18 ` Liu, Yi L 2021-10-15 11:18 ` Jason Gunthorpe 2021-10-15 11:18 ` Jason Gunthorpe via iommu 2021-10-15 11:29 ` Liu, Yi L 2021-10-15 11:29 ` Liu, Yi L 2021-10-19 16:57 ` Jacob Pan 2021-10-19 16:57 ` Jacob Pan 2021-10-19 16:57 ` Jason Gunthorpe 2021-10-19 16:57 ` Jason Gunthorpe via iommu 2021-10-19 17:11 ` Jacob Pan 2021-10-19 17:11 ` Jacob Pan 2021-10-19 17:12 ` Jason Gunthorpe 2021-10-19 17:12 ` Jason Gunthorpe via iommu 2021-09-19 6:38 ` [RFC 02/20] vfio: Add device class for /dev/vfio/devices Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 15:57 ` Jason Gunthorpe 2021-09-21 15:57 ` Jason Gunthorpe via iommu 2021-09-21 23:56 ` Tian, Kevin 2021-09-21 23:56 ` Tian, Kevin 2021-09-22 0:55 ` Jason Gunthorpe 2021-09-22 0:55 ` Jason Gunthorpe via iommu 2021-09-22 1:07 ` Tian, Kevin 2021-09-22 1:07 ` Tian, Kevin 2021-09-22 12:31 ` Jason Gunthorpe 2021-09-22 12:31 ` Jason Gunthorpe via iommu 2021-09-22 3:22 ` Tian, Kevin 2021-09-22 3:22 ` Tian, Kevin 2021-09-22 12:50 ` Jason Gunthorpe 2021-09-22 12:50 ` Jason Gunthorpe via iommu 2021-09-22 14:09 ` Tian, Kevin 2021-09-22 14:09 ` Tian, Kevin 2021-09-21 19:56 ` Alex Williamson 2021-09-21 19:56 ` Alex Williamson 2021-09-22 0:56 ` Tian, Kevin 2021-09-22 0:56 ` Tian, Kevin 2021-09-29 2:08 ` David Gibson 2021-09-29 2:08 ` David Gibson 2021-09-29 19:05 ` Alex Williamson 2021-09-29 19:05 ` Alex Williamson 2021-09-30 2:43 ` David Gibson 2021-09-30 2:43 ` David Gibson 2021-10-20 12:39 ` Liu, Yi L 2021-10-20 12:39 ` Liu, Yi L 2021-09-19 6:38 ` [RFC 03/20] vfio: Add vfio_[un]register_device() Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 16:01 ` Jason Gunthorpe 2021-09-21 16:01 ` Jason Gunthorpe via iommu 2021-09-21 23:10 ` Tian, Kevin 2021-09-21 23:10 ` Tian, Kevin 2021-09-22 0:53 ` Jason Gunthorpe 2021-09-22 0:53 ` Jason Gunthorpe via iommu 2021-09-22 0:59 ` Tian, Kevin 2021-09-22 0:59 ` Tian, Kevin 2021-09-22 9:23 ` Tian, Kevin 2021-09-22 9:23 ` Tian, Kevin 2021-09-22 12:22 ` Jason Gunthorpe 2021-09-22 12:22 ` Jason Gunthorpe via iommu 2021-09-22 13:44 ` Tian, Kevin 2021-09-22 13:44 ` Tian, Kevin 2021-09-22 20:10 ` Alex Williamson 2021-09-22 20:10 ` Alex Williamson 2021-09-22 22:34 ` Tian, Kevin 2021-09-22 22:34 ` Tian, Kevin 2021-09-22 22:45 ` Alex Williamson 2021-09-22 22:45 ` Alex Williamson 2021-09-22 23:45 ` Tian, Kevin 2021-09-22 23:45 ` Tian, Kevin 2021-09-22 23:52 ` Jason Gunthorpe 2021-09-22 23:52 ` Jason Gunthorpe via iommu 2021-09-23 0:38 ` Tian, Kevin 2021-09-23 0:38 ` Tian, Kevin 2021-09-22 23:56 ` Jason Gunthorpe 2021-09-22 23:56 ` Jason Gunthorpe via iommu 2021-09-22 0:54 ` Tian, Kevin 2021-09-22 0:54 ` Tian, Kevin 2021-09-22 1:00 ` Jason Gunthorpe 2021-09-22 1:00 ` Jason Gunthorpe via iommu 2021-09-22 1:02 ` Tian, Kevin 2021-09-22 1:02 ` Tian, Kevin 2021-09-23 7:25 ` Eric Auger 2021-09-23 7:25 ` Eric Auger 2021-09-23 11:44 ` Jason Gunthorpe 2021-09-23 11:44 ` Jason Gunthorpe via iommu 2021-09-29 2:46 ` david 2021-09-29 2:46 ` david 2021-09-29 12:22 ` Jason Gunthorpe 2021-09-29 12:22 ` Jason Gunthorpe via iommu 2021-09-30 2:48 ` david 2021-09-30 2:48 ` david 2021-09-29 2:43 ` David Gibson 2021-09-29 2:43 ` David Gibson 2021-09-29 3:40 ` Tian, Kevin 2021-09-29 3:40 ` Tian, Kevin 2021-09-29 5:30 ` Tian, Kevin 2021-09-29 5:30 ` Tian, Kevin 2021-09-29 7:08 ` Cornelia Huck 2021-09-29 7:08 ` Cornelia Huck 2021-09-29 12:15 ` Jason Gunthorpe via iommu [this message] 2021-09-29 12:15 ` Jason Gunthorpe 2021-09-19 6:38 ` [RFC 04/20] iommu: Add iommu_device_get_info interface Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 16:19 ` Jason Gunthorpe 2021-09-21 16:19 ` Jason Gunthorpe via iommu 2021-09-22 2:31 ` Lu Baolu 2021-09-22 2:31 ` Lu Baolu 2021-09-22 5:07 ` Christoph Hellwig 2021-09-22 5:07 ` Christoph Hellwig 2021-09-29 2:52 ` David Gibson 2021-09-29 2:52 ` David Gibson 2021-09-29 9:25 ` Lu Baolu 2021-09-29 9:25 ` Lu Baolu 2021-09-29 9:29 ` Lu Baolu 2021-09-29 9:29 ` Lu Baolu 2021-09-19 6:38 ` [RFC 05/20] vfio/pci: Register device to /dev/vfio/devices Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 16:40 ` Jason Gunthorpe 2021-09-21 16:40 ` Jason Gunthorpe via iommu 2021-09-21 21:09 ` Alex Williamson 2021-09-21 21:09 ` Alex Williamson 2021-09-21 21:58 ` Jason Gunthorpe 2021-09-21 21:58 ` Jason Gunthorpe via iommu 2021-09-22 1:24 ` Tian, Kevin 2021-09-22 1:24 ` Tian, Kevin 2021-09-22 1:19 ` Tian, Kevin 2021-09-22 1:19 ` Tian, Kevin 2021-09-22 21:17 ` Alex Williamson 2021-09-22 21:17 ` Alex Williamson 2021-09-22 23:49 ` Tian, Kevin 2021-09-22 23:49 ` Tian, Kevin 2021-09-19 6:38 ` [RFC 06/20] iommu: Add iommu_device_init[exit]_user_dma interfaces Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 17:09 ` Jason Gunthorpe 2021-09-21 17:09 ` Jason Gunthorpe via iommu 2021-09-22 1:47 ` Tian, Kevin 2021-09-22 1:47 ` Tian, Kevin 2021-09-22 12:39 ` Jason Gunthorpe 2021-09-22 12:39 ` Jason Gunthorpe via iommu 2021-09-22 13:56 ` Tian, Kevin 2021-09-22 13:56 ` Tian, Kevin 2021-09-27 9:42 ` Tian, Kevin 2021-09-27 9:42 ` Tian, Kevin 2021-09-27 11:34 ` Lu Baolu 2021-09-27 11:34 ` Lu Baolu 2021-09-27 13:08 ` Tian, Kevin 2021-09-27 13:08 ` Tian, Kevin 2021-09-27 11:53 ` Jason Gunthorpe 2021-09-27 11:53 ` Jason Gunthorpe via iommu 2021-09-27 13:00 ` Tian, Kevin 2021-09-27 13:00 ` Tian, Kevin 2021-09-27 13:09 ` Jason Gunthorpe 2021-09-27 13:09 ` Jason Gunthorpe via iommu 2021-09-27 13:32 ` Tian, Kevin 2021-09-27 14:39 ` Jason Gunthorpe 2021-09-28 7:13 ` Tian, Kevin 2021-09-28 11:54 ` Jason Gunthorpe 2021-09-28 23:59 ` Tian, Kevin 2021-09-27 19:19 ` Alex Williamson 2021-09-28 7:43 ` Tian, Kevin 2021-09-28 16:26 ` Alex Williamson 2021-09-27 15:09 ` Jason Gunthorpe 2021-09-27 15:09 ` Jason Gunthorpe via iommu 2021-09-28 7:30 ` Tian, Kevin 2021-09-28 7:30 ` Tian, Kevin 2021-09-28 11:57 ` Jason Gunthorpe 2021-09-28 11:57 ` Jason Gunthorpe via iommu 2021-09-28 13:35 ` Lu Baolu 2021-09-28 13:35 ` Lu Baolu 2021-09-28 14:07 ` Jason Gunthorpe 2021-09-28 14:07 ` Jason Gunthorpe via iommu 2021-09-29 0:38 ` Tian, Kevin 2021-09-29 0:38 ` Tian, Kevin 2021-09-29 12:59 ` Jason Gunthorpe 2021-09-29 12:59 ` Jason Gunthorpe via iommu 2021-10-15 1:29 ` Tian, Kevin 2021-10-15 1:29 ` Tian, Kevin 2021-10-15 11:09 ` Jason Gunthorpe 2021-10-15 11:09 ` Jason Gunthorpe via iommu 2021-10-18 1:52 ` Tian, Kevin 2021-10-18 1:52 ` Tian, Kevin 2021-09-29 2:22 ` Lu Baolu 2021-09-29 2:22 ` Lu Baolu 2021-09-29 2:29 ` Tian, Kevin 2021-09-29 2:29 ` Tian, Kevin 2021-09-29 2:38 ` Lu Baolu 2021-09-29 2:38 ` Lu Baolu 2021-09-29 4:55 ` David Gibson 2021-09-29 4:55 ` David Gibson 2021-09-29 5:38 ` Tian, Kevin 2021-09-29 5:38 ` Tian, Kevin 2021-09-29 6:35 ` David Gibson 2021-09-29 6:35 ` David Gibson 2021-09-29 7:31 ` Tian, Kevin 2021-09-29 7:31 ` Tian, Kevin 2021-09-30 3:05 ` David Gibson 2021-09-30 3:05 ` David Gibson 2021-09-29 12:57 ` Jason Gunthorpe 2021-09-29 12:57 ` Jason Gunthorpe via iommu 2021-09-30 3:09 ` David Gibson 2021-09-30 3:09 ` David Gibson 2021-09-30 22:28 ` Jason Gunthorpe 2021-09-30 22:28 ` Jason Gunthorpe via iommu 2021-10-01 3:54 ` David Gibson 2021-10-01 3:54 ` David Gibson 2021-09-19 6:38 ` [RFC 07/20] iommu/iommufd: Add iommufd_[un]bind_device() Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 17:14 ` Jason Gunthorpe 2021-09-21 17:14 ` Jason Gunthorpe via iommu 2021-10-15 9:21 ` Liu, Yi L 2021-10-15 9:21 ` Liu, Yi L 2021-09-29 5:25 ` David Gibson 2021-09-29 5:25 ` David Gibson 2021-09-29 12:24 ` Jason Gunthorpe 2021-09-29 12:24 ` Jason Gunthorpe via iommu 2021-09-30 3:10 ` David Gibson 2021-09-30 3:10 ` David Gibson 2021-10-01 12:43 ` Jason Gunthorpe 2021-10-01 12:43 ` Jason Gunthorpe via iommu 2021-10-07 1:23 ` David Gibson 2021-10-07 1:23 ` David Gibson 2021-10-07 11:35 ` Jason Gunthorpe 2021-10-07 11:35 ` Jason Gunthorpe via iommu 2021-10-11 3:24 ` David Gibson 2021-10-11 3:24 ` David Gibson 2021-09-19 6:38 ` [RFC 08/20] vfio/pci: Add VFIO_DEVICE_BIND_IOMMUFD Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-19 10:08 ` kernel test robot 2021-09-19 10:08 ` kernel test robot 2021-09-21 17:29 ` Jason Gunthorpe 2021-09-21 17:29 ` Jason Gunthorpe via iommu 2021-09-22 21:01 ` Alex Williamson 2021-09-22 21:01 ` Alex Williamson 2021-09-22 23:01 ` Jason Gunthorpe 2021-09-22 23:01 ` Jason Gunthorpe via iommu 2021-09-29 6:00 ` David Gibson 2021-09-29 6:00 ` David Gibson 2021-09-29 6:41 ` Tian, Kevin 2021-09-29 6:41 ` Tian, Kevin 2021-09-29 12:28 ` Jason Gunthorpe 2021-09-29 12:28 ` Jason Gunthorpe via iommu 2021-09-29 22:34 ` Tian, Kevin 2021-09-29 22:34 ` Tian, Kevin 2021-09-30 3:12 ` David Gibson 2021-09-30 3:12 ` David Gibson 2021-09-19 6:38 ` [RFC 09/20] iommu: Add page size and address width attributes Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-22 13:42 ` Eric Auger 2021-09-22 13:42 ` Eric Auger 2021-09-22 14:19 ` Tian, Kevin 2021-09-22 14:19 ` Tian, Kevin 2021-09-19 6:38 ` [RFC 10/20] iommu/iommufd: Add IOMMU_DEVICE_GET_INFO Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 17:40 ` Jason Gunthorpe 2021-09-21 17:40 ` Jason Gunthorpe via iommu 2021-09-22 3:30 ` Tian, Kevin 2021-09-22 3:30 ` Tian, Kevin 2021-09-22 12:41 ` Jason Gunthorpe 2021-09-22 12:41 ` Jason Gunthorpe via iommu 2021-09-29 6:18 ` david 2021-09-29 6:18 ` david 2021-09-22 21:24 ` Alex Williamson 2021-09-22 21:24 ` Alex Williamson 2021-09-22 23:49 ` Jason Gunthorpe 2021-09-22 23:49 ` Jason Gunthorpe via iommu 2021-09-23 3:10 ` Tian, Kevin 2021-09-23 3:10 ` Tian, Kevin 2021-09-23 10:15 ` Jean-Philippe Brucker 2021-09-23 10:15 ` Jean-Philippe Brucker 2021-09-23 11:27 ` Jason Gunthorpe 2021-09-23 11:27 ` Jason Gunthorpe via iommu 2021-09-23 12:05 ` Tian, Kevin 2021-09-23 12:05 ` Tian, Kevin 2021-09-23 12:22 ` Jason Gunthorpe 2021-09-23 12:22 ` Jason Gunthorpe via iommu 2021-09-29 8:48 ` Tian, Kevin 2021-09-29 8:48 ` Tian, Kevin 2021-09-29 12:36 ` Jason Gunthorpe 2021-09-29 12:36 ` Jason Gunthorpe via iommu 2021-09-30 8:30 ` Tian, Kevin 2021-09-30 10:33 ` Jean-Philippe Brucker 2021-09-30 22:04 ` Jason Gunthorpe 2021-10-01 3:28 ` hch 2021-10-14 8:13 ` Tian, Kevin 2021-10-14 8:22 ` hch 2021-10-14 8:29 ` Tian, Kevin 2021-10-14 8:01 ` Tian, Kevin 2021-10-14 9:16 ` Jean-Philippe Brucker 2021-09-30 8:49 ` Tian, Kevin 2021-09-30 8:49 ` Tian, Kevin 2021-09-30 13:43 ` Lu Baolu 2021-09-30 13:43 ` Lu Baolu 2021-10-01 3:24 ` hch 2021-10-01 3:24 ` hch 2021-09-30 22:08 ` Jason Gunthorpe 2021-09-30 22:08 ` Jason Gunthorpe via iommu 2021-09-23 11:36 ` Jason Gunthorpe 2021-09-23 11:36 ` Jason Gunthorpe via iommu [not found] ` <BN9PR11MB5433409DF766AAEF1BB2CF258CA39@BN9PR11MB5433.namprd11.prod.outlook.com> 2021-09-23 3:38 ` Tian, Kevin 2021-09-23 3:38 ` Tian, Kevin 2021-09-23 11:42 ` Jason Gunthorpe 2021-09-23 11:42 ` Jason Gunthorpe via iommu 2021-09-30 9:35 ` Tian, Kevin 2021-09-30 9:35 ` Tian, Kevin 2021-09-30 22:23 ` Jason Gunthorpe 2021-09-30 22:23 ` Jason Gunthorpe via iommu 2021-10-01 3:30 ` hch 2021-10-01 3:30 ` hch 2021-10-14 9:11 ` Tian, Kevin 2021-10-14 9:11 ` Tian, Kevin 2021-10-14 15:42 ` Jason Gunthorpe 2021-10-14 15:42 ` Jason Gunthorpe via iommu 2021-10-15 1:01 ` Tian, Kevin 2021-10-15 1:01 ` Tian, Kevin [not found] ` <BN9PR11MB543327BB6D58AEF91AD2C9D18CB99@BN9PR11MB5433.namprd11.prod.outlook.com> 2021-10-21 2:26 ` Tian, Kevin 2021-10-21 2:26 ` Tian, Kevin 2021-10-21 14:58 ` Jean-Philippe Brucker 2021-10-21 14:58 ` Jean-Philippe Brucker 2021-10-21 23:22 ` Jason Gunthorpe 2021-10-21 23:22 ` Jason Gunthorpe via iommu 2021-10-22 7:49 ` Jean-Philippe Brucker 2021-10-22 7:49 ` Jean-Philippe Brucker 2021-10-25 16:51 ` Jason Gunthorpe 2021-10-25 16:51 ` Jason Gunthorpe via iommu 2021-10-21 23:30 ` Jason Gunthorpe 2021-10-21 23:30 ` Jason Gunthorpe via iommu 2021-10-22 3:08 ` Tian, Kevin 2021-10-22 3:08 ` Tian, Kevin 2021-10-25 23:34 ` Jason Gunthorpe 2021-10-25 23:34 ` Jason Gunthorpe via iommu 2021-10-27 1:42 ` Tian, Kevin 2021-10-27 1:42 ` Tian, Kevin 2021-10-28 2:07 ` Tian, Kevin 2021-10-28 2:07 ` Tian, Kevin 2021-10-29 13:55 ` Jason Gunthorpe 2021-10-29 13:55 ` Jason Gunthorpe via iommu 2021-09-29 6:23 ` David Gibson 2021-09-29 6:23 ` David Gibson 2021-09-19 6:38 ` [RFC 11/20] iommu/iommufd: Add IOMMU_IOASID_ALLOC/FREE Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-19 11:03 ` kernel test robot 2021-09-19 11:03 ` kernel test robot 2021-09-21 17:44 ` Jason Gunthorpe 2021-09-21 17:44 ` Jason Gunthorpe via iommu 2021-09-22 3:40 ` Tian, Kevin 2021-09-22 3:40 ` Tian, Kevin 2021-09-22 14:09 ` Jason Gunthorpe 2021-09-22 14:09 ` Jason Gunthorpe via iommu 2021-09-23 9:14 ` Tian, Kevin 2021-09-23 9:14 ` Tian, Kevin 2021-09-23 12:06 ` Jason Gunthorpe 2021-09-23 12:06 ` Jason Gunthorpe via iommu 2021-09-23 12:22 ` Tian, Kevin 2021-09-23 12:22 ` Tian, Kevin 2021-09-23 12:31 ` Jason Gunthorpe 2021-09-23 12:31 ` Jason Gunthorpe via iommu 2021-09-23 12:45 ` Tian, Kevin 2021-09-23 12:45 ` Tian, Kevin 2021-09-23 13:01 ` Jason Gunthorpe 2021-09-23 13:01 ` Jason Gunthorpe via iommu 2021-09-23 13:20 ` Tian, Kevin 2021-09-23 13:20 ` Tian, Kevin 2021-09-23 13:30 ` Jason Gunthorpe 2021-09-23 13:30 ` Jason Gunthorpe via iommu 2021-09-23 13:41 ` Tian, Kevin 2021-09-23 13:41 ` Tian, Kevin 2021-10-01 6:30 ` david 2021-10-01 6:30 ` david 2021-10-01 6:26 ` david 2021-10-01 6:26 ` david 2021-10-01 6:19 ` david 2021-10-01 6:19 ` david 2021-10-01 12:25 ` Jason Gunthorpe 2021-10-01 12:25 ` Jason Gunthorpe via iommu 2021-10-02 4:21 ` david 2021-10-02 4:21 ` david 2021-10-02 12:25 ` Jason Gunthorpe 2021-10-02 12:25 ` Jason Gunthorpe via iommu 2021-10-11 5:37 ` david 2021-10-11 5:37 ` david 2021-10-11 17:17 ` Jason Gunthorpe 2021-10-11 17:17 ` Jason Gunthorpe via iommu 2021-10-14 4:33 ` david 2021-10-14 4:33 ` david 2021-10-14 15:06 ` Jason Gunthorpe via iommu 2021-10-14 15:06 ` Jason Gunthorpe 2021-10-18 3:40 ` david 2021-10-18 3:40 ` david 2021-10-01 6:15 ` david 2021-10-01 6:15 ` david 2021-09-22 12:51 ` Liu, Yi L 2021-09-22 12:51 ` Liu, Yi L 2021-09-22 13:32 ` Jason Gunthorpe 2021-09-22 13:32 ` Jason Gunthorpe via iommu 2021-09-23 6:26 ` Liu, Yi L 2021-09-23 6:26 ` Liu, Yi L 2021-10-01 6:13 ` David Gibson 2021-10-01 6:13 ` David Gibson 2021-10-01 12:22 ` Jason Gunthorpe 2021-10-01 12:22 ` Jason Gunthorpe via iommu 2021-10-11 6:02 ` David Gibson 2021-10-11 6:02 ` David Gibson 2021-10-11 8:49 ` Jean-Philippe Brucker 2021-10-11 8:49 ` Jean-Philippe Brucker 2021-10-11 23:38 ` Jason Gunthorpe 2021-10-11 23:38 ` Jason Gunthorpe via iommu 2021-10-12 8:33 ` Jean-Philippe Brucker 2021-10-12 8:33 ` Jean-Philippe Brucker 2021-10-13 7:14 ` Tian, Kevin 2021-10-13 7:14 ` Tian, Kevin 2021-10-13 7:07 ` Tian, Kevin 2021-10-13 7:07 ` Tian, Kevin 2021-10-14 4:38 ` David Gibson 2021-10-14 4:38 ` David Gibson 2021-10-11 18:49 ` Jason Gunthorpe 2021-10-11 18:49 ` Jason Gunthorpe via iommu 2021-10-14 4:53 ` David Gibson 2021-10-14 4:53 ` David Gibson 2021-10-14 14:52 ` Jason Gunthorpe 2021-10-14 14:52 ` Jason Gunthorpe via iommu 2021-10-18 3:50 ` David Gibson 2021-10-18 3:50 ` David Gibson 2021-10-18 17:42 ` Jason Gunthorpe 2021-10-18 17:42 ` Jason Gunthorpe via iommu 2021-09-22 13:45 ` Jean-Philippe Brucker 2021-09-22 13:45 ` Jean-Philippe Brucker 2021-09-29 10:47 ` Liu, Yi L 2021-09-29 10:47 ` Liu, Yi L 2021-10-01 6:11 ` David Gibson 2021-10-01 6:11 ` David Gibson 2021-10-13 7:00 ` Tian, Kevin 2021-10-13 7:00 ` Tian, Kevin 2021-10-14 5:00 ` David Gibson 2021-10-14 5:00 ` David Gibson 2021-10-14 6:53 ` Tian, Kevin 2021-10-14 6:53 ` Tian, Kevin 2021-10-25 5:05 ` David Gibson 2021-10-25 5:05 ` David Gibson 2021-10-27 2:32 ` Tian, Kevin 2021-10-27 2:32 ` Tian, Kevin 2021-09-19 6:38 ` [RFC 12/20] iommu/iommufd: Add IOMMU_CHECK_EXTENSION Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 17:47 ` Jason Gunthorpe 2021-09-21 17:47 ` Jason Gunthorpe via iommu 2021-09-22 3:41 ` Tian, Kevin 2021-09-22 3:41 ` Tian, Kevin 2021-09-22 12:55 ` Jason Gunthorpe 2021-09-22 12:55 ` Jason Gunthorpe via iommu 2021-09-22 14:13 ` Tian, Kevin 2021-09-19 6:38 ` [RFC 13/20] iommu: Extend iommu_at[de]tach_device() for multiple devices group Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-10-14 5:24 ` David Gibson 2021-10-14 5:24 ` David Gibson 2021-10-14 7:06 ` Tian, Kevin 2021-10-14 7:06 ` Tian, Kevin 2021-10-18 3:57 ` David Gibson 2021-10-18 3:57 ` David Gibson 2021-10-18 16:32 ` Jason Gunthorpe 2021-10-18 16:32 ` Jason Gunthorpe via iommu 2021-10-25 5:14 ` David Gibson 2021-10-25 5:14 ` David Gibson 2021-10-25 12:14 ` Jason Gunthorpe 2021-10-25 12:14 ` Jason Gunthorpe via iommu 2021-10-25 13:16 ` David Gibson 2021-10-25 13:16 ` David Gibson 2021-10-25 23:36 ` Jason Gunthorpe 2021-10-25 23:36 ` Jason Gunthorpe via iommu 2021-10-26 9:23 ` David Gibson 2021-10-26 9:23 ` David Gibson 2021-09-19 6:38 ` [RFC 14/20] iommu/iommufd: Add iommufd_device_[de]attach_ioasid() Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 18:02 ` Jason Gunthorpe 2021-09-21 18:02 ` Jason Gunthorpe via iommu 2021-09-22 3:53 ` Tian, Kevin 2021-09-22 3:53 ` Tian, Kevin 2021-09-22 12:57 ` Jason Gunthorpe 2021-09-22 12:57 ` Jason Gunthorpe via iommu 2021-09-22 14:16 ` Tian, Kevin 2021-09-22 14:16 ` Tian, Kevin 2021-09-19 6:38 ` [RFC 15/20] vfio/pci: Add VFIO_DEVICE_[DE]ATTACH_IOASID Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 18:04 ` Jason Gunthorpe 2021-09-21 18:04 ` Jason Gunthorpe via iommu 2021-09-22 3:56 ` Tian, Kevin 2021-09-22 3:56 ` Tian, Kevin 2021-09-22 12:58 ` Jason Gunthorpe 2021-09-22 12:58 ` Jason Gunthorpe via iommu 2021-09-22 14:17 ` Tian, Kevin 2021-09-22 14:17 ` Tian, Kevin 2021-09-19 6:38 ` [RFC 16/20] vfio/type1: Export symbols for dma [un]map code sharing Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-21 18:14 ` Jason Gunthorpe 2021-09-21 18:14 ` Jason Gunthorpe via iommu 2021-09-22 3:57 ` Tian, Kevin 2021-09-22 3:57 ` Tian, Kevin 2021-09-19 6:38 ` [RFC 17/20] iommu/iommufd: Report iova range to userspace Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-19 9:38 ` kernel test robot 2021-09-19 16:41 ` kernel test robot 2021-09-22 14:49 ` Jean-Philippe Brucker 2021-09-22 14:49 ` Jean-Philippe Brucker 2021-09-29 10:44 ` Liu, Yi L 2021-09-29 10:44 ` Liu, Yi L 2021-09-29 12:07 ` Jean-Philippe Brucker 2021-09-29 12:07 ` Jean-Philippe Brucker 2021-09-29 12:31 ` Jason Gunthorpe 2021-09-29 12:31 ` Jason Gunthorpe via iommu 2021-09-19 6:38 ` [RFC 18/20] iommu/iommufd: Add IOMMU_[UN]MAP_DMA on IOASID Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-19 11:53 ` kernel test robot 2021-09-19 6:38 ` [RFC 19/20] iommu/vt-d: Implement device_info iommu_ops callback Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-09-19 6:38 ` [RFC 20/20] Doc: Add documentation for /dev/iommu Liu Yi L 2021-09-19 6:38 ` Liu Yi L 2021-10-29 0:15 ` David Gibson 2021-10-29 0:15 ` David Gibson 2021-10-29 12:44 ` Jason Gunthorpe 2021-10-29 12:44 ` Jason Gunthorpe via iommu 2021-09-19 6:45 ` [RFC 00/20] Introduce /dev/iommu for userspace I/O address space management Liu, Yi L 2021-09-19 6:45 ` Liu, Yi L 2021-09-21 13:45 ` Jason Gunthorpe 2021-09-21 13:45 ` Jason Gunthorpe via iommu 2021-09-22 3:25 ` Liu, Yi L 2021-09-22 3:25 ` Liu, Yi L
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=20210929121515.GN964074@nvidia.com \ --to=iommu@lists.linux-foundation.org \ --cc=alex.williamson@redhat.com \ --cc=ashok.raj@intel.com \ --cc=cohuck@redhat.com \ --cc=corbet@lwn.net \ --cc=dave.jiang@intel.com \ --cc=david@gibson.dropbear.id.au \ --cc=dwmw2@infradead.org \ --cc=hch@lst.de \ --cc=jasowang@redhat.com \ --cc=jean-philippe@linaro.org \ --cc=jgg@nvidia.com \ --cc=jun.j.tian@intel.com \ --cc=kevin.tian@intel.com \ --cc=kvm@vger.kernel.org \ --cc=kwankhede@nvidia.com \ --cc=linux-kernel@vger.kernel.org \ --cc=lkml@metux.net \ --cc=lushenming@huawei.com \ --cc=parav@mellanox.com \ --cc=pbonzini@redhat.com \ --cc=robin.murphy@arm.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: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.