From: David Gibson <david@gibson.dropbear.id.au>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: "Jason Gunthorpe" <jgg@nvidia.com>,
"Daniel P. Berrangé" <berrange@redhat.com>,
"Eric Auger" <eric.auger@redhat.com>,
"Tian, Kevin" <kevin.tian@intel.com>,
"Rodel, Jorg" <jroedel@suse.de>,
"Lu Baolu" <baolu.lu@linux.intel.com>,
"Chaitanya Kulkarni" <chaitanyak@nvidia.com>,
"Cornelia Huck" <cohuck@redhat.com>,
"Daniel Jordan" <daniel.m.jordan@oracle.com>,
"Eric Farman" <farman@linux.ibm.com>,
"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
"Jason Wang" <jasowang@redhat.com>,
"Jean-Philippe Brucker" <jean-philippe@linaro.org>,
"Martins, Joao" <joao.m.martins@oracle.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"Matthew Rosato" <mjrosato@linux.ibm.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"Nicolin Chen" <nicolinc@nvidia.com>,
"Niklas Schnelle" <schnelle@linux.ibm.com>,
"Shameerali Kolothum Thodi"
<shameerali.kolothum.thodi@huawei.com>,
"Liu, Yi L" <yi.l.liu@intel.com>,
"Keqian Zhu" <zhukeqian1@huawei.com>,
"Steve Sistare" <steven.sistare@oracle.com>,
"libvir-list@redhat.com" <libvir-list@redhat.com>,
"Laine Stump" <laine@redhat.com>
Subject: Re: [PATCH RFC v2 00/13] IOMMUFD Generic interface
Date: Mon, 26 Sep 2022 16:34:01 +1000 [thread overview]
Message-ID: <YzFH2bb1cguPpXuf@yekko> (raw)
In-Reply-To: <20220923080307.1d9a6166.alex.williamson@redhat.com>
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On Fri, Sep 23, 2022 at 08:03:07AM -0600, Alex Williamson wrote:
> On Fri, 23 Sep 2022 10:29:41 -0300
> Jason Gunthorpe <jgg@nvidia.com> wrote:
>
> > On Fri, Sep 23, 2022 at 09:54:48AM +0100, Daniel P. Berrangé wrote:
> >
> > > Yes, we use cgroups extensively already.
> >
> > Ok, I will try to see about this
> >
> > Can you also tell me if the selinux/seccomp will prevent qemu from
> > opening more than one /dev/vfio/vfio ? I suppose the answer is no?
>
> QEMU manages the container:group association with legacy vfio, so it
> can't be restricted from creating multiple containers. Thanks,
.. and it absolutely will create multiple containers (i.e. open
/dev/vfio/vfio multiple times) if there are multiple guest-side vIOMMU
domains.
It can, however, open each /dev/vfio/NN group file only once each,
since they are exclusive access.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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next prev parent reply other threads:[~2022-09-26 7:23 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 19:59 [PATCH RFC v2 00/13] IOMMUFD Generic interface Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 01/13] interval-tree: Add a utility to iterate over spans in an interval tree Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 02/13] iommufd: Overview documentation Jason Gunthorpe
2022-09-07 1:39 ` David Gibson
2022-09-09 18:52 ` Jason Gunthorpe
2022-09-12 10:40 ` David Gibson
2022-09-27 17:33 ` Jason Gunthorpe
2022-09-29 3:47 ` David Gibson
2022-09-02 19:59 ` [PATCH RFC v2 03/13] iommufd: File descriptor, context, kconfig and makefiles Jason Gunthorpe
2022-09-04 8:19 ` Baolu Lu
2022-09-09 18:46 ` Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 04/13] kernel/user: Allow user::locked_vm to be usable for iommufd Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 05/13] iommufd: PFN handling for iopt_pages Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 06/13] iommufd: Algorithms for PFN storage Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 07/13] iommufd: Data structure to provide IOVA to PFN mapping Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 08/13] iommufd: IOCTLs for the io_pagetable Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 09/13] iommufd: Add a HW pagetable object Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 10/13] iommufd: Add kAPI toward external drivers for physical devices Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 11/13] iommufd: Add kAPI toward external drivers for kernel access Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 12/13] iommufd: vfio container FD ioctl compatibility Jason Gunthorpe
2022-09-02 19:59 ` [PATCH RFC v2 13/13] iommufd: Add a selftest Jason Gunthorpe
2022-09-13 1:55 ` [PATCH RFC v2 00/13] IOMMUFD Generic interface Tian, Kevin
2022-09-13 7:28 ` Eric Auger
2022-09-20 19:56 ` Jason Gunthorpe
2022-09-21 3:48 ` Tian, Kevin
2022-09-21 18:06 ` Alex Williamson
2022-09-21 18:44 ` Jason Gunthorpe
2022-09-21 19:30 ` Steven Sistare
2022-09-21 23:09 ` Jason Gunthorpe
2022-10-06 16:01 ` Jason Gunthorpe
2022-10-06 22:57 ` Steven Sistare
2022-10-10 20:54 ` Steven Sistare
2022-10-11 12:30 ` Jason Gunthorpe
2022-10-11 20:30 ` Steven Sistare
2022-10-12 12:32 ` Jason Gunthorpe
2022-10-12 13:50 ` Steven Sistare
2022-10-12 14:40 ` Jason Gunthorpe
2022-10-12 14:55 ` Steven Sistare
2022-10-12 14:59 ` Jason Gunthorpe
2022-09-21 23:20 ` Jason Gunthorpe
2022-09-22 11:20 ` Daniel P. Berrangé
2022-09-22 14:08 ` Jason Gunthorpe
2022-09-22 14:49 ` Daniel P. Berrangé
2022-09-22 14:51 ` Jason Gunthorpe
2022-09-22 15:00 ` Daniel P. Berrangé
2022-09-22 15:31 ` Jason Gunthorpe
2022-09-23 8:54 ` Daniel P. Berrangé
2022-09-23 13:29 ` Jason Gunthorpe
2022-09-23 13:35 ` Daniel P. Berrangé
2022-09-23 13:46 ` Jason Gunthorpe
2022-09-23 14:00 ` Daniel P. Berrangé
2022-09-23 15:40 ` Laine Stump
2022-10-21 19:56 ` Jason Gunthorpe
2022-09-23 14:03 ` Alex Williamson
2022-09-26 6:34 ` David Gibson [this message]
2022-09-21 22:36 ` Laine Stump
2022-09-22 11:06 ` Daniel P. Berrangé
2022-09-22 14:13 ` Jason Gunthorpe
2022-09-22 14:46 ` Daniel P. Berrangé
2022-09-13 2:05 ` Tian, Kevin
2022-09-20 20:07 ` Jason Gunthorpe
2022-09-21 3:40 ` Tian, Kevin
2022-09-21 16:19 ` Jason Gunthorpe
2022-09-26 13:48 ` Rodel, Jorg
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