From: "Tian, Kevin" <kevin.tian@intel.com>
To: "Liu, Yi L" <yi.l.liu@intel.com>, "jgg@nvidia.com" <jgg@nvidia.com>
Cc: "alex.williamson@redhat.com" <alex.williamson@redhat.com>,
"chao.p.peng@linux.intel.com" <chao.p.peng@linux.intel.com>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"yi.y.sun@linux.intel.com" <yi.y.sun@linux.intel.com>,
Tony Krowiak <akrowiak@linux.ibm.com>,
"Halil Pasic" <pasic@linux.ibm.com>,
Jason Herne <jjherne@linux.ibm.com>,
"Zhenyu Wang" <zhenyuw@linux.intel.com>,
"Wang, Zhi A" <zhi.a.wang@intel.com>
Subject: RE: [iommufd 0/2] Make mdev driver dma_unmap callback tolerant to unmaps come before device open
Date: Thu, 24 Nov 2022 06:50:33 +0000 [thread overview]
Message-ID: <BN9PR11MB5276DE5010A39F50C9C657AB8C0F9@BN9PR11MB5276.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20221123134832.429589-1-yi.l.liu@intel.com>
> From: Liu, Yi L <yi.l.liu@intel.com>
> Sent: Wednesday, November 23, 2022 9:49 PM
>
> Jason's "Connect VFIO to IOMMUFD" introduces vfio iommufd compat mode.
> Under
> this mode, vfio_iommufd_bind() creates an access which has an unmap
> callback,
> which can be called immediately. This means mdev drivers may receive
> unmap
> requests before the mdev is opened. For now, most dma_unmap() callbacks
> are
> tolerant with such unmap requests, except for gvt-g and vfio-ap. This series
> tries to enhance the two drivers.
>
there are only three drivers (gvt, vfio-ap and vfio-ccw) providing
dma_unmap().
I'd not call the situation where only one driver is OK as "most
dma_unmap() callbacks are tolerant".
next prev parent reply other threads:[~2022-11-24 6:50 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-23 13:48 [iommufd 0/2] Make mdev driver dma_unmap callback tolerant to unmaps come before device open Yi Liu
2022-11-23 13:48 ` [iommufd 1/2] i915/gvt: Move kvmgt_protect_table_init() and gvt_cache_init() into init Yi Liu
2022-11-24 7:07 ` Tian, Kevin
2022-11-24 9:15 ` Yi Liu
2022-11-25 6:04 ` Zhenyu Wang
2022-11-25 9:06 ` Yi Liu
2022-11-28 6:28 ` Tian, Kevin
2022-11-28 10:22 ` Wang, Zhi A
2022-11-28 13:10 ` Yi Liu
2022-11-23 13:48 ` [iommufd 2/2] vfio/ap: validate iova during dma_unmap and trigger irq disable Yi Liu
2022-11-24 7:08 ` Tian, Kevin
2022-11-24 12:59 ` Jason Gunthorpe
2022-11-28 6:31 ` Tian, Kevin
2022-11-28 15:32 ` Matthew Rosato
2022-11-28 15:40 ` Matthew Rosato
2022-11-28 20:28 ` Jason Gunthorpe
2022-11-29 2:43 ` Tian, Kevin
2022-11-29 9:42 ` Yi Liu
2022-11-24 6:50 ` Tian, Kevin [this message]
2022-11-24 9:44 ` [iommufd 0/2] Make mdev driver dma_unmap callback tolerant to unmaps come before device open Yi Liu
2022-11-25 6:06 ` Zhenyu Wang
2022-11-25 8:58 ` Yi Liu
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=BN9PR11MB5276DE5010A39F50C9C657AB8C0F9@BN9PR11MB5276.namprd11.prod.outlook.com \
--to=kevin.tian@intel.com \
--cc=akrowiak@linux.ibm.com \
--cc=alex.williamson@redhat.com \
--cc=chao.p.peng@linux.intel.com \
--cc=jgg@nvidia.com \
--cc=jjherne@linux.ibm.com \
--cc=kvm@vger.kernel.org \
--cc=pasic@linux.ibm.com \
--cc=yi.l.liu@intel.com \
--cc=yi.y.sun@linux.intel.com \
--cc=zhenyuw@linux.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 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.