From: "Tian, Kevin" <kevin.tian@intel.com>
To: "Wang, Zhi A" <zhi.a.wang@intel.com>, Jason Gunthorpe <jgg@nvidia.com>
Cc: Matthew Rosato <mjrosato@linux.ibm.com>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
David Airlie <airlied@linux.ie>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
Kirti Wankhede <kwankhede@nvidia.com>,
Vineeth Vijayan <vneethv@linux.ibm.com>,
Alexander Gordeev <agordeev@linux.ibm.com>,
Christoph Hellwig <hch@lst.de>,
"linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
"Liu, Yi L" <yi.l.liu@intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Halil Pasic <pasic@linux.ibm.com>,
Christian Borntraeger <borntraeger@linux.ibm.com>,
Heiko Carstens <hca@linux.ibm.com>,
Tony Krowiak <akrowiak@linux.ibm.com>,
Eric Farman <farman@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
"intel-gfx@lists.freedesktop.org"
<intel-gfx@lists.freedesktop.org>,
Alex Williamson <alex.williamson@redhat.com>,
Harald Freudenberger <freude@linux.ibm.com>,
"Vivi, Rodrigo" <rodrigo.vivi@intel.com>,
"intel-gvt-dev@lists.freedesktop.org"
<intel-gvt-dev@lists.freedesktop.org>,
Jason Herne <jjherne@linux.ibm.com>,
Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>,
Cornelia Huck <cohuck@redhat.com>,
Peter Oberparleiter <oberpar@linux.ibm.com>,
Sven Schnelle <svens@linux.ibm.com>
Subject: RE: [PATCH 1/9] vfio: Make vfio_(un)register_notifier accept a vfio_device
Date: Thu, 14 Apr 2022 02:15:50 +0000 [thread overview]
Message-ID: <BN9PR11MB5276ACEE269D5178B92BC8F48CEF9@BN9PR11MB5276.namprd11.prod.outlook.com> (raw)
In-Reply-To: <bc3f32ee-0dd5-d525-0536-dc18ade338a6@intel.com>
> From: Wang, Zhi A <zhi.a.wang@intel.com>
> Sent: Thursday, April 14, 2022 5:09 AM
>
> > Or is it that only the page table levels themselves are GFNs and the
> > actual DMA's are IOVA? The unclear mixing of GFN as IOVA in the code
> > makes it inscrutible.
> >
>
> No. Even the HW is capable of controlling the level of translation, but
> it's not used like this in the existing driver. It's definitely an
> architecture open.
>
There is no open on this. Any guest memory that vGPU accesses must
be IOVA including page table levels. There is only one address space
per vRID.
next prev parent reply other threads:[~2022-04-14 2:16 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-12 15:53 [PATCH 0/9] Make the rest of the VFIO driver interface use vfio_device Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 1/9] vfio: Make vfio_(un)register_notifier accept a vfio_device Jason Gunthorpe
[not found] ` <20220413055524.GB32092@lst.de>
2022-04-13 11:39 ` Jason Gunthorpe
[not found] ` <20220413160601.GA29631@lst.de>
2022-04-13 16:18 ` Jason Gunthorpe
[not found] ` <20220413162946.GB31053@lst.de>
2022-04-13 17:37 ` Jason Gunthorpe
2022-04-13 19:17 ` Wang, Zhi A
2022-04-13 20:04 ` Jason Gunthorpe
2022-04-13 21:08 ` Wang, Zhi A
2022-04-13 23:12 ` Jason Gunthorpe
2022-04-14 2:04 ` Tian, Kevin
2022-04-14 2:15 ` Tian, Kevin [this message]
2022-04-14 19:25 ` Eric Farman
2022-04-18 15:28 ` Tony Krowiak
2022-04-18 15:44 ` Jason Gunthorpe
2022-04-18 15:52 ` Tony Krowiak
2022-04-18 15:29 ` Jason J. Herne
2022-04-12 15:53 ` [PATCH 2/9] vfio/ccw: Remove mdev from struct channel_program Jason Gunthorpe
2022-04-14 19:25 ` Eric Farman
2022-04-12 15:53 ` [PATCH 3/9] vfio/mdev: Pass in a struct vfio_device * to vfio_pin/unpin_pages() Jason Gunthorpe
[not found] ` <20220413055717.GC32092@lst.de>
2022-04-13 11:40 ` Jason Gunthorpe
2022-04-14 19:26 ` Eric Farman
2022-04-18 15:25 ` Jason J. Herne
2022-04-19 17:00 ` Jason Gunthorpe
2022-04-18 15:56 ` Tony Krowiak
2022-04-12 15:53 ` [PATCH 4/9] drm/i915/gvt: Change from vfio_group_(un)pin_pages to vfio_(un)pin_pages Jason Gunthorpe
[not found] ` <20220413060110.GF32092@lst.de>
2022-04-13 13:39 ` Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 5/9] vfio: Pass in a struct vfio_device * to vfio_dma_rw() Jason Gunthorpe
[not found] ` <20220413060008.GE32092@lst.de>
2022-04-13 13:39 ` Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 6/9] drm/i915/gvt: Add missing module_put() in error unwind Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 7/9] drm/i915/gvt: Delete kvmgt_vdev::vfio_group Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 8/9] vfio: Remove dead code Jason Gunthorpe
2022-04-12 15:53 ` [PATCH 9/9] vfio: Remove calls to vfio_group_add_container_user() Jason Gunthorpe
[not found] ` <20220413061105.GA32701@lst.de>
2022-04-13 14:03 ` Jason Gunthorpe
2022-04-14 13:51 ` Matthew Rosato
2022-04-14 14:22 ` Jason Gunthorpe
2022-04-15 2:32 ` Tian, Kevin
2022-04-15 12:07 ` Jason Gunthorpe
2022-04-15 23:45 ` Tian, Kevin
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=BN9PR11MB5276ACEE269D5178B92BC8F48CEF9@BN9PR11MB5276.namprd11.prod.outlook.com \
--to=kevin.tian@intel.com \
--cc=agordeev@linux.ibm.com \
--cc=airlied@linux.ie \
--cc=akrowiak@linux.ibm.com \
--cc=alex.williamson@redhat.com \
--cc=borntraeger@linux.ibm.com \
--cc=cohuck@redhat.com \
--cc=corbet@lwn.net \
--cc=dri-devel@lists.freedesktop.org \
--cc=farman@linux.ibm.com \
--cc=freude@linux.ibm.com \
--cc=gor@linux.ibm.com \
--cc=hca@linux.ibm.com \
--cc=hch@lst.de \
--cc=intel-gfx@lists.freedesktop.org \
--cc=intel-gvt-dev@lists.freedesktop.org \
--cc=jgg@nvidia.com \
--cc=jjherne@linux.ibm.com \
--cc=kvm@vger.kernel.org \
--cc=kwankhede@nvidia.com \
--cc=linux-doc@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=mjrosato@linux.ibm.com \
--cc=oberpar@linux.ibm.com \
--cc=pasic@linux.ibm.com \
--cc=rodrigo.vivi@intel.com \
--cc=svens@linux.ibm.com \
--cc=tvrtko.ursulin@linux.intel.com \
--cc=vneethv@linux.ibm.com \
--cc=yi.l.liu@intel.com \
--cc=zhi.a.wang@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: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).