From: "joro@8bytes.org" <joro@8bytes.org> To: Jason Gunthorpe <jgg@nvidia.com> Cc: "Tian, Kevin" <kevin.tian@intel.com>, Jason Wang <jasowang@redhat.com>, "Liu, Yi L" <yi.l.liu@intel.com>, "alex.williamson@redhat.com" <alex.williamson@redhat.com>, "eric.auger@redhat.com" <eric.auger@redhat.com>, "baolu.lu@linux.intel.com" <baolu.lu@linux.intel.com>, "jacob.jun.pan@linux.intel.com" <jacob.jun.pan@linux.intel.com>, "Raj, Ashok" <ashok.raj@intel.com>, "Tian, Jun J" <jun.j.tian@intel.com>, "Sun, Yi Y" <yi.y.sun@intel.com>, "jean-philippe@linaro.org" <jean-philippe@linaro.org>, "peterx@redhat.com" <peterx@redhat.com>, "Wu, Hao" <hao.wu@intel.com>, "stefanha@gmail.com" <stefanha@gmail.com>, "iommu@lists.linux-foundation.org" <iommu@lists.linux-foundation.org>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, "Michael S. Tsirkin" <mst@redhat.com> Subject: Re: (proposal) RE: [PATCH v7 00/16] vfio: expose virtual Shared Virtual Addressing to VMs Date: Tue, 3 Nov 2020 15:03:18 +0100 [thread overview] Message-ID: <20201103140318.GL22888@8bytes.org> (raw) In-Reply-To: <20201103132335.GO2620339@nvidia.com> On Tue, Nov 03, 2020 at 09:23:35AM -0400, Jason Gunthorpe wrote: > Userspace needs fine grained control over the composition of the page > table behind the PASID, 1:1 with the mm_struct is only one use case. VFIO already offers an interface for that. It shouldn't be too complicated to expand that for PASID-bound page-tables. > Userspace needs to be able to handle IOMMU faults, apparently Could be implemented by a fault-fd handed out by VFIO. > The Intel guys had a bunch of other stuff too, looking through the new > API they are proposing for vfio gives some flavour what they think is > needed.. I really don't think that user-space should have to deal with details like PASIDs or other IOMMU internals, unless absolutly necessary. This is an OS we work on, and the idea behind an OS is to abstract the hardware away. Regards, Joerg
WARNING: multiple messages have this Message-ID (diff)
From: "joro@8bytes.org" <joro@8bytes.org> To: Jason Gunthorpe <jgg@nvidia.com> Cc: "jean-philippe@linaro.org" <jean-philippe@linaro.org>, "Tian, Kevin" <kevin.tian@intel.com>, "Raj, Ashok" <ashok.raj@intel.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, "iommu@lists.linux-foundation.org" <iommu@lists.linux-foundation.org>, "stefanha@gmail.com" <stefanha@gmail.com>, Jason Wang <jasowang@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, "Sun, Yi Y" <yi.y.sun@intel.com>, "alex.williamson@redhat.com" <alex.williamson@redhat.com>, "Wu, Hao" <hao.wu@intel.com>, "Tian, Jun J" <jun.j.tian@intel.com> Subject: Re: (proposal) RE: [PATCH v7 00/16] vfio: expose virtual Shared Virtual Addressing to VMs Date: Tue, 3 Nov 2020 15:03:18 +0100 [thread overview] Message-ID: <20201103140318.GL22888@8bytes.org> (raw) In-Reply-To: <20201103132335.GO2620339@nvidia.com> On Tue, Nov 03, 2020 at 09:23:35AM -0400, Jason Gunthorpe wrote: > Userspace needs fine grained control over the composition of the page > table behind the PASID, 1:1 with the mm_struct is only one use case. VFIO already offers an interface for that. It shouldn't be too complicated to expand that for PASID-bound page-tables. > Userspace needs to be able to handle IOMMU faults, apparently Could be implemented by a fault-fd handed out by VFIO. > The Intel guys had a bunch of other stuff too, looking through the new > API they are proposing for vfio gives some flavour what they think is > needed.. I really don't think that user-space should have to deal with details like PASIDs or other IOMMU internals, unless absolutly necessary. This is an OS we work on, and the idea behind an OS is to abstract the hardware away. Regards, Joerg _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2020-11-03 14:05 UTC|newest] Thread overview: 110+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-10-12 8:38 (proposal) RE: [PATCH v7 00/16] vfio: expose virtual Shared Virtual Addressing to VMs Tian, Kevin 2020-10-12 8:38 ` Tian, Kevin 2020-10-13 6:22 ` Jason Wang 2020-10-13 6:22 ` Jason Wang 2020-10-14 3:08 ` Tian, Kevin 2020-10-14 3:08 ` Tian, Kevin 2020-10-14 23:10 ` Alex Williamson 2020-10-14 23:10 ` Alex Williamson 2020-10-15 7:02 ` Jason Wang 2020-10-15 7:02 ` Jason Wang 2020-10-15 6:52 ` Jason Wang 2020-10-15 6:52 ` Jason Wang 2020-10-15 7:58 ` Tian, Kevin 2020-10-15 7:58 ` Tian, Kevin 2020-10-15 8:40 ` Jason Wang 2020-10-15 8:40 ` Jason Wang 2020-10-15 10:14 ` Liu, Yi L 2020-10-15 10:14 ` Liu, Yi L 2020-10-20 6:18 ` Jason Wang 2020-10-20 6:18 ` Jason Wang 2020-10-20 8:19 ` Liu, Yi L 2020-10-20 8:19 ` Liu, Yi L 2020-10-20 9:19 ` Jason Wang 2020-10-20 9:19 ` Jason Wang 2020-10-20 9:40 ` Liu, Yi L 2020-10-20 9:40 ` Liu, Yi L 2020-10-20 13:54 ` Jason Gunthorpe 2020-10-20 13:54 ` Jason Gunthorpe 2020-10-20 14:00 ` Liu, Yi L 2020-10-20 14:00 ` Liu, Yi L 2020-10-20 14:05 ` Jason Gunthorpe 2020-10-20 14:05 ` Jason Gunthorpe 2020-10-20 14:09 ` Liu, Yi L 2020-10-20 14:09 ` Liu, Yi L 2020-10-13 10:27 ` Jean-Philippe Brucker 2020-10-13 10:27 ` Jean-Philippe Brucker 2020-10-14 2:11 ` Tian, Kevin 2020-10-14 2:11 ` Tian, Kevin 2020-10-14 3:16 ` Tian, Kevin 2020-10-14 3:16 ` Tian, Kevin 2020-10-16 15:36 ` Jason Gunthorpe 2020-10-16 15:36 ` Jason Gunthorpe 2020-10-19 8:39 ` Liu, Yi L 2020-10-19 8:39 ` Liu, Yi L 2020-10-19 14:25 ` Jason Gunthorpe 2020-10-19 14:25 ` Jason Gunthorpe 2020-10-20 10:21 ` Liu, Yi L 2020-10-20 10:21 ` Liu, Yi L 2020-10-20 14:02 ` Jason Gunthorpe 2020-10-20 14:02 ` Jason Gunthorpe 2020-10-20 14:19 ` Liu, Yi L 2020-10-20 14:19 ` Liu, Yi L 2020-10-21 2:21 ` Jason Wang 2020-10-21 2:21 ` Jason Wang 2020-10-20 16:24 ` Raj, Ashok 2020-10-20 16:24 ` Raj, Ashok 2020-10-20 17:03 ` Jason Gunthorpe 2020-10-20 17:03 ` Jason Gunthorpe 2020-10-20 19:51 ` Raj, Ashok 2020-10-20 19:51 ` Raj, Ashok 2020-10-20 19:55 ` Jason Gunthorpe 2020-10-20 19:55 ` Jason Gunthorpe 2020-10-20 20:08 ` Raj, Ashok 2020-10-20 20:08 ` Raj, Ashok 2020-10-20 20:14 ` Jason Gunthorpe 2020-10-20 20:14 ` Jason Gunthorpe 2020-10-20 20:27 ` Raj, Ashok 2020-10-20 20:27 ` Raj, Ashok 2020-10-21 11:48 ` Jason Gunthorpe 2020-10-21 11:48 ` Jason Gunthorpe 2020-10-21 17:51 ` Raj, Ashok 2020-10-21 17:51 ` Raj, Ashok 2020-10-21 18:24 ` Jason Gunthorpe 2020-10-21 18:24 ` Jason Gunthorpe 2020-10-21 20:03 ` Raj, Ashok 2020-10-21 20:03 ` Raj, Ashok 2020-10-21 23:32 ` Jason Gunthorpe 2020-10-21 23:32 ` Jason Gunthorpe 2020-10-21 23:53 ` Raj, Ashok 2020-10-21 23:53 ` Raj, Ashok 2020-10-22 2:55 ` Jason Wang 2020-10-22 2:55 ` Jason Wang 2020-10-22 3:54 ` Liu, Yi L 2020-10-22 3:54 ` Liu, Yi L 2020-10-22 4:38 ` Jason Wang 2020-10-22 4:38 ` Jason Wang 2020-11-03 9:52 ` joro 2020-11-03 9:52 ` joro 2020-11-03 12:56 ` Jason Gunthorpe 2020-11-03 12:56 ` Jason Gunthorpe 2020-11-03 13:18 ` joro 2020-11-03 13:18 ` joro 2020-11-03 13:23 ` Jason Gunthorpe 2020-11-03 13:23 ` Jason Gunthorpe 2020-11-03 14:03 ` joro [this message] 2020-11-03 14:03 ` joro 2020-11-03 14:06 ` Jason Gunthorpe 2020-11-03 14:06 ` Jason Gunthorpe 2020-11-03 14:35 ` joro 2020-11-03 14:35 ` joro 2020-11-03 15:22 ` Jason Gunthorpe 2020-11-03 15:22 ` Jason Gunthorpe 2020-11-03 16:55 ` joro 2020-11-03 16:55 ` joro 2020-11-03 17:48 ` Jason Gunthorpe 2020-11-03 17:48 ` Jason Gunthorpe 2020-11-03 19:14 ` joro 2020-11-03 19:14 ` joro 2020-11-04 19:29 ` Jason Gunthorpe 2020-11-04 19:29 ` Jason Gunthorpe
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=20201103140318.GL22888@8bytes.org \ --to=joro@8bytes.org \ --cc=alex.williamson@redhat.com \ --cc=ashok.raj@intel.com \ --cc=baolu.lu@linux.intel.com \ --cc=eric.auger@redhat.com \ --cc=hao.wu@intel.com \ --cc=iommu@lists.linux-foundation.org \ --cc=jacob.jun.pan@linux.intel.com \ --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=mst@redhat.com \ --cc=peterx@redhat.com \ --cc=stefanha@gmail.com \ --cc=yi.l.liu@intel.com \ --cc=yi.y.sun@intel.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.