From: Jason Gunthorpe via iommu <iommu@lists.linux-foundation.org>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: "kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Jason Wang <jasowang@redhat.com>,
Kirti Wankhede <kwankhede@nvidia.com>,
Jean-Philippe Brucker <jean-philippe@linaro.org>,
"Jiang, Dave" <dave.jiang@intel.com>,
"Raj, Ashok" <ashok.raj@intel.com>,
Jonathan Corbet <corbet@lwn.net>,
"Tian, Kevin" <kevin.tian@intel.com>,
"parav@mellanox.com" <parav@mellanox.com>,
"Alex Williamson \(alex.williamson@redhat.com\)"
<alex.williamson@redhat.com>,
"Enrico Weigelt, metux IT consult" <lkml@metux.net>,
Robin Murphy <robin.murphy@arm.com>,
LKML <linux-kernel@vger.kernel.org>,
Shenming Lu <lushenming@huawei.com>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
Paolo Bonzini <pbonzini@redhat.com>,
David Woodhouse <dwmw2@infradead.org>
Subject: Re: [RFC v2] /dev/iommu uAPI proposal
Date: Wed, 4 Aug 2021 11:07:42 -0300 [thread overview]
Message-ID: <20210804140742.GI1721383@nvidia.com> (raw)
In-Reply-To: <YQii3g3plte4gT5Z@yekko>
On Tue, Aug 03, 2021 at 11:58:54AM +1000, David Gibson wrote:
> > I'd rather deduce the endpoint from a collection of devices than the
> > other way around...
>
> Which I think is confusing, and in any case doesn't cover the case of
> one "device" with multiple endpoints.
Well they are both confusing, and I'd prefer to focus on the common
case without extra mandatory steps. Exposing optional endpoint sharing
information seems more in line with where everything is going than
making endpoint sharing a first class object.
AFAIK a device with multiple endpoints where those endpoints are
shared with other devices doesn't really exist/or is useful? Eg PASID
has multiple RIDs by they are not shared.
Jason
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next prev parent reply other threads:[~2021-08-04 14:07 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-09 7:48 [RFC v2] /dev/iommu uAPI proposal Tian, Kevin
2021-07-09 21:50 ` Alex Williamson
2021-07-12 1:22 ` Tian, Kevin
2021-07-12 18:41 ` Alex Williamson
2021-07-12 23:41 ` Tian, Kevin
2021-07-12 23:56 ` Tian, Kevin
2021-07-13 12:55 ` Jason Gunthorpe
2021-07-13 16:26 ` Alex Williamson
2021-07-13 16:32 ` Jason Gunthorpe
2021-07-13 22:48 ` Tian, Kevin
2021-07-13 23:02 ` Jason Gunthorpe
2021-07-13 23:20 ` Tian, Kevin
2021-07-13 23:22 ` Jason Gunthorpe
2021-07-13 23:24 ` Tian, Kevin
2021-07-15 3:20 ` Shenming Lu
2021-07-15 3:55 ` Tian, Kevin
2021-07-15 6:29 ` Shenming Lu
2021-07-15 6:49 ` Tian, Kevin
2021-07-15 8:14 ` Shenming Lu
2021-07-15 12:48 ` Jason Gunthorpe via iommu
2021-07-15 13:57 ` Raj, Ashok
2021-07-15 15:23 ` Jason Gunthorpe via iommu
2021-07-15 16:21 ` Raj, Ashok
2021-07-15 17:18 ` Jason Gunthorpe via iommu
2021-07-15 17:48 ` Raj, Ashok
2021-07-15 17:53 ` Jason Gunthorpe via iommu
2021-07-15 18:05 ` Raj, Ashok
2021-07-15 18:13 ` Jason Gunthorpe via iommu
2021-07-16 1:20 ` Tian, Kevin
2021-07-16 12:20 ` Shenming Lu
2021-07-21 2:13 ` Tian, Kevin
2021-07-22 16:30 ` Jason Gunthorpe via iommu
2021-07-16 18:30 ` Jason Gunthorpe via iommu
2021-07-21 2:11 ` Tian, Kevin
2021-07-26 4:50 ` David Gibson
2021-07-28 4:04 ` Tian, Kevin
2021-08-03 1:50 ` David Gibson
2021-08-03 3:19 ` Tian, Kevin
2021-08-06 4:45 ` David Gibson
2021-08-06 12:32 ` Jason Gunthorpe via iommu
2021-08-10 6:10 ` David Gibson
2021-08-09 8:34 ` Tian, Kevin
2021-08-10 4:47 ` David Gibson
2021-08-10 6:04 ` Tian, Kevin
2021-07-30 14:51 ` Jason Gunthorpe via iommu
2021-08-02 2:49 ` Tian, Kevin
2021-08-04 14:04 ` Jason Gunthorpe via iommu
2021-08-04 22:59 ` Tian, Kevin
2021-08-05 11:27 ` Jason Gunthorpe via iommu
2021-08-05 22:44 ` Tian, Kevin
2021-08-06 4:47 ` David Gibson
2021-08-03 1:58 ` David Gibson
2021-08-04 14:07 ` Jason Gunthorpe via iommu [this message]
2021-08-06 4:24 ` David Gibson
2021-07-26 8:14 ` Jean-Philippe Brucker
2021-07-28 4:05 ` Tian, Kevin
2021-08-04 15:59 ` Eric Auger
2021-08-05 0:36 ` Tian, Kevin
2021-08-10 7:17 ` Eric Auger
2021-08-10 9:00 ` Tian, Kevin
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