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Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common
From: |
Neo Jia |
Subject: |
Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU. |
Date: |
Tue, 16 Feb 2016 23:54:48 -0800 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Wed, Feb 17, 2016 at 07:46:15AM +0000, Tian, Kevin wrote:
> > From: Neo Jia
> > Sent: Wednesday, February 17, 2016 3:26 PM
> >
> >
>
> >
> > If your most concern is having this kind of path doesn't provide enough
> > information of the virtual device, we can add more sysfs attributes within
> > the
> > directory of /sys/devices/virtual/vgpu/$UUID-$vgpu_idx/ to reflect the
> > information you want.
>
> Like Gerd said, you can have something like this:
>
> -device vfio-pci,sysfsdev=/sys/devices/virtual/vgpu/vgpu_idx/UUID
Hi Kevin,
The vgpu_idx is not unique number at all.
For example, how to locate the path of a given VM? Whoever is going to configure
the qemu has to walk through *all* the current vgpu path to locate the UUID to
match the QEMU's VM UUID. This is not required if you have UUID as part of the
device path.
>
> >
> > Even with UUID, you don't need libvirt at all. you can get uuid by running
> > uuidgen command, I don't need libvirt to code up and test the RFC that I
> > have
> > sent out early. :-)
>
> although simple, it still creates unnecessary user space dependency for
> kernel resource management...
I think I has answered this, UUID is not a user space or kernel space
concept, it is just a generic way to represent object, it just make sure that
virtual gpu device directory can be uniquely addressed.
Thanks,
Neo
>
> Thanks
> Kevin
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., (continued)
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Neo Jia, 2016/02/16
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Tian, Kevin, 2016/02/16
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Neo Jia, 2016/02/16
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Tian, Kevin, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Eric Blake, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Neo Jia, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Neo Jia, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Tian, Kevin, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Neo Jia, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Tian, Kevin, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU.,
Neo Jia <=
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Tian, Kevin, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Neo Jia, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Tian, Kevin, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Neo Jia, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Tian, Kevin, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Gerd Hoffmann, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Neo Jia, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Gerd Hoffmann, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Neo Jia, 2016/02/17
- Re: [Qemu-devel] [RFC PATCH v1 1/1] vGPU core driver : to provide common interface for vGPU., Tian, Kevin, 2016/02/17