From: Paolo Bonzini <pbonzini@redhat.com> To: John Ferlan <jferlan@redhat.com>, Kirti Wankhede <kwankhede@nvidia.com>, Michal Privoznik <mprivozn@redhat.com>, Alex Williamson <alex.williamson@redhat.com> Cc: "Song, Jike" <jike.song@intel.com>, "cjia@nvidia.com" <cjia@nvidia.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, "libvir-list@redhat.com" <libvir-list@redhat.com>, "Tian, Kevin" <kevin.tian@intel.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, "kraxel@redhat.com" <kraxel@redhat.com>, Laine Stump <laine@redhat.com>, "bjsdjshi@linux.vnet.ibm.com" <bjsdjshi@linux.vnet.ibm.com> Subject: Re: [libvirt] [Qemu-devel] [PATCH v7 0/4] Add Mediated device support Date: Fri, 2 Sep 2016 23:44:20 +0200 [thread overview] Message-ID: <22097a95-21c6-3aec-f0ff-717181a705f8@redhat.com> (raw) In-Reply-To: <a2757788-7ecd-6860-e9c9-60675b44549b@redhat.com> On 02/09/2016 22:19, John Ferlan wrote: > We don't have such a pool for GPU's (yet) - although I suppose they > could just become a class of storage pools. > > The issue being nodedev device objects are not saved between reboots. > They are generated on the fly. Hence the "create-nodedev' API - notice > there's no "define-nodedev' API, although I suppose one could be > created. It's just more work to get this all to work properly. It can all be made transient to begin with. The VM can be defined but won't start unless the mdev(s) exist with the right UUIDs. >> After creating the vGPU, if required by the host driver, all the other >> type ids would disappear from "virsh nodedev-dumpxml pci_0000_86_00_0" too. > > Not wanting to make assumptions, but this reads as if I create one type > 11 vGPU, then I can create no others on the host. Maybe I'm reading it > wrong - it's been a long week. Correct, at least for NVIDIA. > PCI devices have the "managed='yes|no'" attribute as well. That's what > determines whether the device is to be detached from the host or not. > That's been something very painful to manage for vfio and well libvirt! mdevs do not exist on the host (they do not have a driver on the host because they are not PCI devices) so they do need any management. At least I hope that's good news. :) Paolo
WARNING: multiple messages have this Message-ID (diff)
From: Paolo Bonzini <pbonzini@redhat.com> To: John Ferlan <jferlan@redhat.com>, Kirti Wankhede <kwankhede@nvidia.com>, Michal Privoznik <mprivozn@redhat.com>, Alex Williamson <alex.williamson@redhat.com> Cc: "Song, Jike" <jike.song@intel.com>, "cjia@nvidia.com" <cjia@nvidia.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, "libvir-list@redhat.com" <libvir-list@redhat.com>, "Tian, Kevin" <kevin.tian@intel.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, "kraxel@redhat.com" <kraxel@redhat.com>, Laine Stump <laine@redhat.com>, "bjsdjshi@linux.vnet.ibm.com" <bjsdjshi@linux.vnet.ibm.com> Subject: Re: [Qemu-devel] [libvirt] [PATCH v7 0/4] Add Mediated device support Date: Fri, 2 Sep 2016 23:44:20 +0200 [thread overview] Message-ID: <22097a95-21c6-3aec-f0ff-717181a705f8@redhat.com> (raw) In-Reply-To: <a2757788-7ecd-6860-e9c9-60675b44549b@redhat.com> On 02/09/2016 22:19, John Ferlan wrote: > We don't have such a pool for GPU's (yet) - although I suppose they > could just become a class of storage pools. > > The issue being nodedev device objects are not saved between reboots. > They are generated on the fly. Hence the "create-nodedev' API - notice > there's no "define-nodedev' API, although I suppose one could be > created. It's just more work to get this all to work properly. It can all be made transient to begin with. The VM can be defined but won't start unless the mdev(s) exist with the right UUIDs. >> After creating the vGPU, if required by the host driver, all the other >> type ids would disappear from "virsh nodedev-dumpxml pci_0000_86_00_0" too. > > Not wanting to make assumptions, but this reads as if I create one type > 11 vGPU, then I can create no others on the host. Maybe I'm reading it > wrong - it's been a long week. Correct, at least for NVIDIA. > PCI devices have the "managed='yes|no'" attribute as well. That's what > determines whether the device is to be detached from the host or not. > That's been something very painful to manage for vfio and well libvirt! mdevs do not exist on the host (they do not have a driver on the host because they are not PCI devices) so they do need any management. At least I hope that's good news. :) Paolo
next prev parent reply other threads:[~2016-09-02 21:44 UTC|newest] Thread overview: 162+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-08-25 3:53 [PATCH v7 0/4] Add Mediated device support Kirti Wankhede 2016-08-25 3:53 ` [Qemu-devel] " Kirti Wankhede 2016-08-25 3:53 ` [PATCH v7 1/4] vfio: Mediated device Core driver Kirti Wankhede 2016-08-25 3:53 ` [Qemu-devel] " Kirti Wankhede 2016-09-08 8:09 ` Jike Song 2016-09-08 8:09 ` [Qemu-devel] " Jike Song 2016-09-08 9:38 ` Neo Jia 2016-09-08 9:38 ` [Qemu-devel] " Neo Jia 2016-09-09 6:26 ` Jike Song 2016-09-09 6:26 ` [Qemu-devel] " Jike Song 2016-09-09 17:48 ` Kirti Wankhede 2016-09-09 17:48 ` [Qemu-devel] " Kirti Wankhede 2016-09-09 18:42 ` Alex Williamson 2016-09-09 18:42 ` [Qemu-devel] " Alex Williamson 2016-09-09 19:55 ` Kirti Wankhede 2016-09-09 19:55 ` [Qemu-devel] " Kirti Wankhede 2016-09-12 5:10 ` Jike Song 2016-09-12 5:10 ` [Qemu-devel] " Jike Song 2016-09-12 7:49 ` Kirti Wankhede 2016-09-12 7:49 ` [Qemu-devel] " Kirti Wankhede 2016-09-12 15:53 ` Alex Williamson 2016-09-12 15:53 ` [Qemu-devel] " Alex Williamson 2016-09-19 7:08 ` Jike Song 2016-09-19 7:08 ` [Qemu-devel] " Jike Song 2016-09-19 17:29 ` Kirti Wankhede 2016-09-19 17:29 ` [Qemu-devel] " Kirti Wankhede 2016-09-19 18:11 ` Alex Williamson 2016-09-19 18:11 ` [Qemu-devel] " Alex Williamson 2016-09-19 20:09 ` Kirti Wankhede 2016-09-19 20:09 ` [Qemu-devel] " Kirti Wankhede 2016-09-19 20:59 ` Alex Williamson 2016-09-20 12:48 ` Jike Song 2016-09-20 12:48 ` [Qemu-devel] " Jike Song 2016-08-25 3:53 ` [PATCH v7 2/4] vfio: VFIO driver for mediated devices Kirti Wankhede 2016-08-25 3:53 ` [Qemu-devel] " Kirti Wankhede 2016-08-25 9:22 ` Dong Jia 2016-08-25 9:22 ` [Qemu-devel] " Dong Jia 2016-08-26 14:13 ` Kirti Wankhede 2016-08-26 14:13 ` [Qemu-devel] " Kirti Wankhede 2016-09-08 2:38 ` Jike Song 2016-09-08 2:38 ` [Qemu-devel] " Jike Song 2016-09-19 18:22 ` Kirti Wankhede 2016-09-19 18:22 ` Kirti Wankhede 2016-09-19 18:36 ` Alex Williamson 2016-09-19 18:36 ` Alex Williamson 2016-09-19 19:13 ` Kirti Wankhede 2016-09-19 19:13 ` Kirti Wankhede 2016-09-19 20:03 ` Alex Williamson 2016-09-19 20:03 ` Alex Williamson 2016-09-20 2:50 ` Jike Song 2016-09-20 16:24 ` Alex Williamson 2016-09-21 3:19 ` Jike Song 2016-09-21 4:51 ` Alex Williamson 2016-09-21 5:02 ` Jike Song 2016-09-08 2:45 ` Jike Song 2016-09-08 2:45 ` [Qemu-devel] " Jike Song 2016-09-13 2:35 ` Jike Song 2016-09-13 2:35 ` [Qemu-devel] " Jike Song 2016-09-20 5:48 ` Dong Jia Shi 2016-09-20 5:48 ` [Qemu-devel] " Dong Jia Shi 2016-09-20 6:37 ` Jike Song 2016-09-20 6:37 ` [Qemu-devel] " Jike Song 2016-09-20 12:53 ` Jike Song 2016-09-20 12:53 ` [Qemu-devel] " Jike Song 2016-08-25 3:53 ` [PATCH v7 3/4] vfio iommu: Add support " Kirti Wankhede 2016-08-25 3:53 ` [Qemu-devel] " Kirti Wankhede 2016-08-25 7:29 ` Dong Jia 2016-08-25 7:29 ` [Qemu-devel] " Dong Jia 2016-08-26 13:50 ` Kirti Wankhede 2016-08-26 13:50 ` [Qemu-devel] " Kirti Wankhede 2016-09-29 2:17 ` Jike Song 2016-09-29 2:17 ` [Qemu-devel] " Jike Song 2016-09-29 15:06 ` Kirti Wankhede 2016-09-29 15:06 ` [Qemu-devel] " Kirti Wankhede 2016-09-30 2:58 ` Jike Song 2016-09-30 2:58 ` [Qemu-devel] " Jike Song 2016-09-30 3:10 ` Jike Song 2016-09-30 3:10 ` [Qemu-devel] " Jike Song 2016-09-30 11:44 ` Kirti Wankhede 2016-09-30 11:44 ` [Qemu-devel] " Kirti Wankhede 2016-10-08 7:09 ` Jike Song 2016-10-08 7:09 ` [Qemu-devel] " Jike Song 2016-08-25 3:53 ` [PATCH v7 4/4] docs: Add Documentation for Mediated devices Kirti Wankhede 2016-08-25 3:53 ` [Qemu-devel] " Kirti Wankhede 2016-09-03 16:40 ` Kirti Wankhede 2016-09-03 16:40 ` [Qemu-devel] " Kirti Wankhede 2016-08-30 16:16 ` [PATCH v7 0/4] Add Mediated device support Alex Williamson 2016-08-30 16:16 ` [Qemu-devel] " Alex Williamson 2016-08-31 6:12 ` Tian, Kevin 2016-08-31 6:12 ` [Qemu-devel] " Tian, Kevin 2016-08-31 7:04 ` Jike Song 2016-08-31 7:04 ` [Qemu-devel] " Jike Song 2016-08-31 15:48 ` Alex Williamson 2016-08-31 15:48 ` [Qemu-devel] " Alex Williamson 2016-09-01 4:09 ` Tian, Kevin 2016-09-01 4:09 ` [Qemu-devel] " Tian, Kevin 2016-09-01 4:10 ` Tian, Kevin 2016-09-01 4:10 ` [Qemu-devel] " Tian, Kevin 2016-09-01 18:22 ` Kirti Wankhede 2016-09-01 18:22 ` [Qemu-devel] " Kirti Wankhede 2016-09-01 20:01 ` Alex Williamson 2016-09-01 20:01 ` [Qemu-devel] " Alex Williamson 2016-09-02 6:17 ` Kirti Wankhede 2016-09-02 6:17 ` [Qemu-devel] " Kirti Wankhede 2016-09-01 16:47 ` Michal Privoznik 2016-09-01 16:59 ` Alex Williamson 2016-09-01 16:59 ` [Qemu-devel] " Alex Williamson 2016-09-02 4:48 ` Michal Privoznik 2016-09-02 5:21 ` Kirti Wankhede 2016-09-02 10:05 ` Paolo Bonzini 2016-09-02 17:15 ` Kirti Wankhede 2016-09-02 17:25 ` Paolo Bonzini 2016-09-02 18:33 ` Kirti Wankhede 2016-09-02 20:29 ` [libvirt] " John Ferlan 2016-09-02 20:29 ` [Qemu-devel] [libvirt] " John Ferlan 2016-09-03 16:31 ` Kirti Wankhede 2016-09-03 16:31 ` [Qemu-devel] " Kirti Wankhede 2016-09-06 17:54 ` [libvirt] [Qemu-devel] " Alex Williamson 2016-09-06 17:54 ` [Qemu-devel] [libvirt] " Alex Williamson 2016-09-02 21:48 ` [Qemu-devel] " Paolo Bonzini 2016-09-03 11:56 ` [libvirt] " John Ferlan 2016-09-03 11:56 ` [Qemu-devel] [libvirt] " John Ferlan 2016-09-03 13:07 ` [libvirt] [Qemu-devel] " Paolo Bonzini 2016-09-03 13:07 ` [Qemu-devel] [libvirt] " Paolo Bonzini 2016-09-03 17:47 ` Kirti Wankhede 2016-09-03 17:47 ` [Qemu-devel] " Kirti Wankhede 2016-09-03 16:34 ` [Qemu-devel] " Kirti Wankhede 2016-09-06 17:40 ` Alex Williamson 2016-09-06 19:35 ` Kirti Wankhede 2016-09-06 21:28 ` Alex Williamson 2016-09-07 8:22 ` Tian, Kevin 2016-09-07 8:22 ` Tian, Kevin 2016-09-07 16:00 ` Alex Williamson 2016-09-07 16:15 ` Kirti Wankhede 2016-09-07 16:44 ` Alex Williamson 2016-09-07 18:06 ` Kirti Wankhede 2016-09-07 22:13 ` Alex Williamson 2016-09-08 18:48 ` Kirti Wankhede 2016-09-08 20:51 ` Alex Williamson 2016-09-07 18:17 ` Neo Jia 2016-09-07 18:27 ` Daniel P. Berrange 2016-09-07 18:32 ` Neo Jia 2016-09-07 6:48 ` Tian, Kevin 2016-09-07 6:48 ` Tian, Kevin 2016-09-02 20:19 ` [libvirt] " John Ferlan 2016-09-02 20:19 ` [Qemu-devel] [libvirt] " John Ferlan 2016-09-02 21:44 ` Paolo Bonzini [this message] 2016-09-02 21:44 ` Paolo Bonzini 2016-09-02 23:57 ` [libvirt] [Qemu-devel] " Laine Stump 2016-09-02 23:57 ` [Qemu-devel] [libvirt] " Laine Stump 2016-09-03 16:49 ` [libvirt] [Qemu-devel] " Kirti Wankhede 2016-09-03 16:49 ` [Qemu-devel] [libvirt] " Kirti Wankhede 2016-09-05 7:52 ` [libvirt] [Qemu-devel] " Paolo Bonzini 2016-09-05 7:52 ` [Qemu-devel] [libvirt] " Paolo Bonzini 2016-09-03 11:57 ` [libvirt] [Qemu-devel] " John Ferlan 2016-09-03 11:57 ` [Qemu-devel] [libvirt] " John Ferlan 2016-09-05 7:54 ` [libvirt] [Qemu-devel] " Paolo Bonzini 2016-09-05 7:54 ` [Qemu-devel] [libvirt] " Paolo Bonzini 2016-09-02 17:55 ` [libvirt] [Qemu-devel] " Laine Stump 2016-09-02 17:55 ` [Qemu-devel] [libvirt] " Laine Stump 2016-09-02 19:15 ` Alex Williamson 2016-09-02 19:15 ` [Qemu-devel] " Alex Williamson
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