From: Jason Gunthorpe <jgg@nvidia.com>
To: Yi Liu <yi.l.liu@intel.com>
Cc: alex.williamson@redhat.com, kevin.tian@intel.com,
joro@8bytes.org, robin.murphy@arm.com, cohuck@redhat.com,
eric.auger@redhat.com, nicolinc@nvidia.com, kvm@vger.kernel.org,
mjrosato@linux.ibm.com, chao.p.peng@linux.intel.com,
yi.y.sun@linux.intel.com, peterx@redhat.com, jasowang@redhat.com,
shameerali.kolothum.thodi@huawei.com, lulu@redhat.com,
suravee.suthikulpanit@amd.com,
intel-gvt-dev@lists.freedesktop.org,
intel-gfx@lists.freedesktop.org, linux-s390@vger.kernel.org,
xudong.hao@intel.com, yan.y.zhao@intel.com,
terrence.xu@intel.com
Subject: Re: [PATCH v5 15/19] vfio: Add cdev for vfio_device
Date: Mon, 27 Feb 2023 14:55:49 -0400 [thread overview]
Message-ID: <Y/z8tVo1ujcmHBSJ@nvidia.com> (raw)
In-Reply-To: <20230227111135.61728-16-yi.l.liu@intel.com>
On Mon, Feb 27, 2023 at 03:11:31AM -0800, Yi Liu wrote:
> diff --git a/drivers/vfio/Kconfig b/drivers/vfio/Kconfig
> index a8f544629467..169762316513 100644
> --- a/drivers/vfio/Kconfig
> +++ b/drivers/vfio/Kconfig
> @@ -12,6 +12,18 @@ menuconfig VFIO
> If you don't know what to do here, say N.
>
> if VFIO
> +config VFIO_DEVICE_CDEV
> + bool "Support for the VFIO cdev /dev/vfio/devices/vfioX"
> + depends on IOMMUFD && (X86 || S390 || ARM || ARM64)
We don't need to propogate this arch detection stuff, at worst it
should be in iommufd kconfig if it is really needed.
Also that other thread shows that vfio doesn't work on ARM because we
can never take ownership of a device due to arm iommu
Jason
next prev parent reply other threads:[~2023-02-27 18:55 UTC|newest]
Thread overview: 128+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-27 11:11 [PATCH v5 00/19] Add vfio_device cdev for iommufd support Yi Liu
2023-02-27 11:11 ` [PATCH v5 01/19] vfio: Allocate per device file structure Yi Liu
2023-02-27 18:46 ` Jason Gunthorpe
2023-02-27 11:11 ` [PATCH v5 02/19] vfio: Refine vfio file kAPIs for KVM Yi Liu
2023-02-27 18:46 ` Jason Gunthorpe
2023-02-27 11:11 ` [PATCH v5 03/19] vfio: Accept vfio device file in the KVM facing kAPI Yi Liu
2023-02-27 18:46 ` Jason Gunthorpe
2023-02-27 11:11 ` [PATCH v5 04/19] kvm/vfio: Rename kvm_vfio_group to prepare for accepting vfio device fd Yi Liu
2023-02-27 18:47 ` Jason Gunthorpe
2023-02-27 11:11 ` [PATCH v5 05/19] kvm/vfio: Accept vfio device file from userspace Yi Liu
2023-02-27 18:47 ` Jason Gunthorpe
2023-02-27 11:11 ` [PATCH v5 06/19] vfio: Pass struct vfio_device_file * to vfio_device_open/close() Yi Liu
2023-02-27 18:47 ` Jason Gunthorpe
2023-02-27 11:11 ` [PATCH v5 07/19] vfio: Block device access via device fd until device is opened Yi Liu
2023-02-27 18:48 ` Jason Gunthorpe
2023-03-01 9:22 ` Liu, Yi L
2023-02-27 11:11 ` [PATCH v5 08/19] vfio/pci: Update comment around group_fd get in vfio_pci_ioctl_pci_hot_reset() Yi Liu
2023-02-27 18:48 ` Jason Gunthorpe
2023-02-27 11:11 ` [PATCH v5 09/19] vfio/pci: Allow passing zero-length fd array in VFIO_DEVICE_PCI_HOT_RESET Yi Liu
2023-02-27 18:22 ` Jason Gunthorpe
2023-02-28 2:31 ` Liu, Yi L
2023-03-02 6:07 ` Liu, Yi L
2023-03-02 9:55 ` Tian, Kevin
2023-03-02 12:35 ` Jason Gunthorpe
2023-03-02 14:20 ` Liu, Yi L
2023-03-03 6:36 ` Tian, Kevin
2023-03-03 16:55 ` Alex Williamson
2023-03-05 14:48 ` Liu, Yi L
2023-03-06 8:16 ` Tian, Kevin
2023-03-06 8:23 ` Tian, Kevin
2023-03-06 8:33 ` Liu, Yi L
2023-03-06 9:59 ` Liu, Yi L
2023-03-06 13:16 ` Jason Gunthorpe
2023-03-07 2:31 ` Tian, Kevin
2023-03-07 2:35 ` Liu, Yi L
2023-03-07 12:36 ` Jason Gunthorpe
2023-03-07 13:28 ` Liu, Yi L
2023-03-08 7:26 ` Tian, Kevin
2023-03-08 7:47 ` Liu, Yi L
2023-03-08 7:55 ` Tian, Kevin
2023-03-08 8:00 ` Liu, Yi L
2023-03-08 8:14 ` Tian, Kevin
2023-03-08 8:15 ` Liu, Yi L
2023-03-08 15:08 ` Jason Gunthorpe
2023-03-02 21:04 ` Alex Williamson
2023-02-27 11:11 ` [PATCH v5 10/19] vfio: Add infrastructure for bind_iommufd from userspace Yi Liu
2023-02-27 18:29 ` Jason Gunthorpe
2023-02-28 2:35 ` Liu, Yi L
2023-02-28 6:58 ` Liu, Yi L
2023-02-28 12:31 ` Jason Gunthorpe
2023-02-28 12:45 ` Liu, Yi L
2023-02-28 12:52 ` Jason Gunthorpe
2023-02-28 12:56 ` Liu, Yi L
2023-02-28 12:58 ` Jason Gunthorpe
2023-02-28 12:29 ` Jason Gunthorpe
2023-02-28 12:48 ` Liu, Yi L
2023-02-28 12:52 ` Jason Gunthorpe
2023-02-28 13:24 ` Liu, Yi L
2023-02-27 11:11 ` [PATCH v5 11/19] vfio-iommufd: Add detach_ioas support for physical VFIO devices Yi Liu
2023-02-27 18:44 ` Jason Gunthorpe
2023-02-28 2:57 ` Liu, Yi L
2023-02-28 12:33 ` Jason Gunthorpe
2023-02-28 12:43 ` Liu, Yi L
2023-02-27 11:11 ` [PATCH v5 12/19] vfio-iommufd: Add detach_ioas for emulated " Yi Liu
2023-02-27 18:45 ` Jason Gunthorpe
2023-02-27 11:11 ` [PATCH v5 13/19] vfio: Add cdev_device_open_cnt to vfio_group Yi Liu
2023-02-27 19:20 ` Jason Gunthorpe
2023-02-27 11:11 ` [PATCH v5 14/19] vfio: Make vfio_device_open() single open for device cdev path Yi Liu
2023-02-27 18:52 ` Jason Gunthorpe
2023-02-28 3:11 ` Liu, Yi L
2023-02-28 12:33 ` Jason Gunthorpe
2023-03-01 13:58 ` Liu, Yi L
2023-02-27 11:11 ` [PATCH v5 15/19] vfio: Add cdev for vfio_device Yi Liu
2023-02-27 18:55 ` Jason Gunthorpe [this message]
2023-02-28 3:47 ` Liu, Yi L
2023-02-27 19:06 ` Jason Gunthorpe
2023-02-28 3:59 ` Liu, Yi L
2023-02-27 11:11 ` [PATCH v5 16/19] vfio: Add VFIO_DEVICE_BIND_IOMMUFD Yi Liu
2023-02-27 19:19 ` Jason Gunthorpe
2023-02-28 4:08 ` Liu, Yi L
2023-03-01 9:19 ` Liu, Yi L
2023-03-01 17:46 ` Jason Gunthorpe
2023-03-02 4:09 ` Liu, Yi L
2023-03-03 6:57 ` Liu, Yi L
2023-03-03 7:23 ` Liu, Yi L
2023-03-07 6:38 ` Tian, Kevin
2023-03-07 12:37 ` Jason Gunthorpe
2023-03-07 13:03 ` Liu, Yi L
2023-03-08 7:17 ` Tian, Kevin
2023-03-10 2:39 ` Alexey Kardashevskiy
2023-03-10 5:49 ` Liu, Yi L
2023-02-27 11:11 ` [PATCH v5 17/19] vfio: Add VFIO_DEVICE_AT[DE]TACH_IOMMUFD_PT Yi Liu
2023-02-27 18:39 ` Jason Gunthorpe
2023-02-28 2:51 ` Liu, Yi L
2023-02-28 12:32 ` Jason Gunthorpe
2023-02-28 12:42 ` Liu, Yi L
2023-02-28 12:53 ` Jason Gunthorpe
2023-02-28 13:22 ` Liu, Yi L
2023-02-28 13:25 ` Jason Gunthorpe
2023-02-28 13:36 ` Liu, Yi L
2023-02-28 13:43 ` Jason Gunthorpe
2023-02-28 14:01 ` Liu, Yi L
2023-02-28 14:38 ` Jason Gunthorpe
2023-03-01 14:04 ` Liu, Yi L
2023-03-01 17:49 ` Jason Gunthorpe
2023-03-02 3:24 ` Liu, Yi L
2023-02-27 11:11 ` [PATCH v5 18/19] vfio: Compile group optionally Yi Liu
2023-02-27 19:20 ` Jason Gunthorpe
2023-02-28 3:14 ` Liu, Yi L
2023-02-28 6:00 ` Liu, Yi L
2023-02-28 12:36 ` Jason Gunthorpe
2023-03-01 13:59 ` Liu, Yi L
2023-02-27 11:11 ` [PATCH v5 19/19] docs: vfio: Add vfio device cdev description Yi Liu
2023-02-27 19:21 ` [PATCH v5 00/19] Add vfio_device cdev for iommufd support Jason Gunthorpe
2023-02-28 3:03 ` Liu, Yi L
2023-02-28 16:58 ` Xu, Terrence
2023-03-01 2:29 ` Nicolin Chen
2023-03-01 3:44 ` Liu, Yi L
2023-03-02 9:43 ` Shameerali Kolothum Thodi
2023-03-02 23:51 ` Nicolin Chen
2023-03-03 15:01 ` Shameerali Kolothum Thodi
2023-03-04 7:00 ` Nicolin Chen
2023-03-04 8:22 ` Liu, Yi L
2023-03-08 15:54 ` Shameerali Kolothum Thodi
2023-03-14 11:38 ` Shameerali Kolothum Thodi
2023-03-15 23:22 ` Nicolin Chen
2023-03-16 7:39 ` Liu, Yi L
2023-03-03 21:29 ` Matthew Rosato
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