From: Christoph Hellwig <hch@lst.de>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Alex Williamson <alex.williamson@redhat.com>,
Kirti Wankhede <kwankhede@nvidia.com>,
Christoph Hellwig <hch@lst.de>,
"Tian, Kevin" <kevin.tian@intel.com>,
Diana Craciun <diana.craciun@oss.nxp.com>,
Cornelia Huck <cohuck@redhat.com>,
Eric Auger <eric.auger@redhat.com>,
"Xu, Terrence" <terrence.xu@intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [PATCH 11/14] vfio: clean up the check for mediated device in vfio_iommu_type1
Date: Fri, 1 Oct 2021 05:20:10 +0200 [thread overview]
Message-ID: <20211001032010.GA16450@lst.de> (raw)
In-Reply-To: <20210930165707.GA69218@ziepe.ca>
On Thu, Sep 30, 2021 at 01:57:07PM -0300, Jason Gunthorpe wrote:
> On Thu, Sep 30, 2021 at 10:46:20AM -0600, Alex Williamson wrote:
> > I'm only aware that the PF driver enables basic SR-IOV configuration of
> > VFs, ie. the number of enabled VFs.
>
> This is quite common in the netdev world, for instance you use the PF
> driver to set the MAC addresses, QOS and other details on the VF
> devices.
The NVMe spec also support it using the Virtualization extensions,
although I'm not aware of any device that actually implements it so far.
>
> > only management of the number of child devices, but the flavor of each
> > child, for example the non-homogeneous slice of resources allocated per
> > child device.
>
> Since the devices are PCI VFs they should be able to be used, with
> configuration, any place a PCI VF is usable. EG vfio-pci, a Kernel
> driver, etc.
>
> This is why the PF needs to provide the configuration to support all
> the use cases.
Exactly.
next prev parent reply other threads:[~2021-10-01 3:20 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-13 7:15 cleanup vfio iommu_group creation v5 Christoph Hellwig
2021-09-13 7:15 ` [PATCH 01/14] vfio: Move vfio_iommu_group_get() to vfio_register_group_dev() Christoph Hellwig
2021-09-14 1:57 ` Tian, Kevin
2021-09-14 5:46 ` Christoph Hellwig
2021-09-14 6:11 ` Tian, Kevin
2021-09-13 7:15 ` [PATCH 02/14] vfio: factor out a vfio_iommu_driver_allowed helper Christoph Hellwig
2021-09-23 22:59 ` Alex Williamson
2021-09-13 7:15 ` [PATCH 03/14] vfio: remove the iommudata check in vfio_noiommu_attach_group Christoph Hellwig
2021-09-13 7:15 ` [PATCH 04/14] vfio: factor out a vfio_group_find_or_alloc helper Christoph Hellwig
2021-09-14 2:00 ` Tian, Kevin
2021-09-13 7:15 ` [PATCH 05/14] vfio: refactor noiommu group creation Christoph Hellwig
2021-09-14 2:07 ` Tian, Kevin
2021-09-13 7:15 ` [PATCH 06/14] vfio: remove the iommudata hack for noiommu groups Christoph Hellwig
2021-09-15 16:44 ` Jason Gunthorpe
2021-09-13 7:15 ` [PATCH 07/14] vfio: simplify iommu group allocation for mediated devices Christoph Hellwig
2021-09-14 2:23 ` Tian, Kevin
2021-09-13 7:16 ` [PATCH 08/14] vfio: remove unused method from vfio_iommu_driver_ops Christoph Hellwig
2021-09-13 7:16 ` [PATCH 09/14] vfio: move the vfio_iommu_driver_ops interface out of <linux/vfio.h> Christoph Hellwig
2021-09-13 7:16 ` [PATCH 10/14] vfio: remove the unused mdev iommu hook Christoph Hellwig
2021-09-13 7:16 ` [PATCH 11/14] vfio: clean up the check for mediated device in vfio_iommu_type1 Christoph Hellwig
2021-09-16 19:55 ` Kirti Wankhede
2021-09-16 22:18 ` Jason Gunthorpe
2021-09-17 4:49 ` Tian, Kevin
2021-09-17 5:05 ` Christoph Hellwig
2021-09-17 6:51 ` Kirti Wankhede
2021-09-17 12:53 ` Jason Gunthorpe
2021-09-30 16:46 ` Alex Williamson
2021-09-30 16:57 ` Jason Gunthorpe
2021-10-01 3:20 ` Christoph Hellwig [this message]
2021-09-13 7:16 ` [PATCH 12/14] vfio/spapr_tce: reject mediated devices Christoph Hellwig
2021-09-13 7:16 ` [PATCH 13/14] vfio/iommu_type1: remove the "external" domain Christoph Hellwig
2021-09-23 22:59 ` Alex Williamson
2021-09-23 23:06 ` Jason Gunthorpe
2021-09-13 7:16 ` [PATCH 14/14] vfio/iommu_type1: remove IS_IOMMU_CAP_DOMAIN_IN_CONTAINER Christoph Hellwig
2021-09-15 18:07 ` cleanup vfio iommu_group creation v5 Jason Gunthorpe
-- strict thread matches above, loose matches on Subject: below --
2021-08-26 13:34 cleanup vfio iommu_group creation v4 Christoph Hellwig
2021-08-26 13:34 ` [PATCH 11/14] vfio: clean up the check for mediated device in vfio_iommu_type1 Christoph Hellwig
2021-08-25 16:19 cleanup vfio iommu_group creation v3 Christoph Hellwig
2021-08-25 16:19 ` [PATCH 11/14] vfio: clean up the check for mediated device in vfio_iommu_type1 Christoph Hellwig
2021-08-26 3:51 ` Tian, Kevin
2021-08-24 14:46 cleanup vfio iommu_group creation v2 Christoph Hellwig
2021-08-24 14:46 ` [PATCH 11/14] vfio: clean up the check for mediated device in vfio_iommu_type1 Christoph Hellwig
2021-08-25 0:28 ` Jason Gunthorpe
2021-08-25 5:34 ` Christoph Hellwig
2021-08-25 12:35 ` Jason Gunthorpe
2021-08-11 15:14 cleanup vfio iommu_group creation Christoph Hellwig
2021-08-11 15:14 ` [PATCH 11/14] vfio: clean up the check for mediated device in vfio_iommu_type1 Christoph Hellwig
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