From: Nicolin Chen <nicolinc@nvidia.com>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: "Alex Williamson" <alex@shazbot.org>,
"Christian König" <christian.koenig@amd.com>,
dri-devel@lists.freedesktop.org, iommu@lists.linux.dev,
"Joerg Roedel" <joro@8bytes.org>,
"Kevin Tian" <kevin.tian@intel.com>,
kvm@vger.kernel.org, linaro-mm-sig@lists.linaro.org,
linux-kselftest@vger.kernel.org, linux-media@vger.kernel.org,
"Robin Murphy" <robin.murphy@arm.com>,
"Shuah Khan" <shuah@kernel.org>,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Will Deacon" <will@kernel.org>,
"Krishnakant Jaju" <kjaju@nvidia.com>,
"Leon Romanovsky" <leon@kernel.org>,
"Matt Ochs" <mochs@nvidia.com>,
patches@lists.linux.dev, "Simona Vetter" <simona.vetter@ffwll.ch>,
"Vivek Kasireddy" <vivek.kasireddy@intel.com>,
"Xu Yilun" <yilun.xu@linux.intel.com>
Subject: Re: [PATCH 0/9] Initial DMABUF support for iommufd
Date: Fri, 7 Nov 2025 09:52:45 -0800 [thread overview]
Message-ID: <aQ4x7UiMMCB0m0dH@Asurada-Nvidia> (raw)
In-Reply-To: <0-v1-af84a3ab44f5+f68-iommufd_buf_jgg@nvidia.com>
On Fri, Nov 07, 2025 at 12:49:32PM -0400, Jason Gunthorpe wrote:
> This is on github: https://github.com/jgunthorpe/linux/commits/iommufd_dmabuf
>
> v2:
> - Rebase on Leon's v7
> - Fix mislocking in an iopt_fill_domain() error path
I have verified this v2 using the branch above, by drafting a QEMU
patch for dmabuf on top of Shameer's vSMMU v5 series:
https://github.com/nicolinc/qemu/commits/wip/iommufd_dmabuf/
With that, I see GPU BAR memory be correctly fetched in the QEMU:
vfio_region_dmabuf Device 0009:01:00.0, region "0009:01:00.0 BAR 0", offset: 0x0, size: 0x1000000
vfio_region_dmabuf Device 0009:01:00.0, region "0009:01:00.0 BAR 2", offset: 0x0, size: 0x44f00000
vfio_region_dmabuf Device 0009:01:00.0, region "0009:01:00.0 BAR 4", offset: 0x0, size: 0x17a0000000
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
next prev parent reply other threads:[~2025-11-07 17:53 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-07 16:49 [PATCH 0/9] Initial DMABUF support for iommufd Jason Gunthorpe
2025-11-07 16:49 ` [PATCH 1/9] vfio/pci: Add vfio_pci_dma_buf_iommufd_map() Jason Gunthorpe
2025-11-20 7:49 ` Tian, Kevin
2025-11-20 17:34 ` Nicolin Chen
2025-11-07 16:49 ` [PATCH 2/9] iommufd: Add DMABUF to iopt_pages Jason Gunthorpe
2025-11-07 18:02 ` Nicolin Chen
2025-11-20 7:55 ` Tian, Kevin
2025-11-07 16:49 ` [PATCH 3/9] iommufd: Do not map/unmap revoked DMABUFs Jason Gunthorpe
2025-11-07 18:30 ` Nicolin Chen
2025-11-20 7:56 ` Tian, Kevin
2025-11-07 16:49 ` [PATCH 4/9] iommufd: Allow a DMABUF to be revoked Jason Gunthorpe
2025-11-13 23:26 ` Nicolin Chen
2025-11-20 7:58 ` Tian, Kevin
2025-11-07 16:49 ` [PATCH 5/9] iommufd: Allow MMIO pages in a batch Jason Gunthorpe
2025-11-13 23:28 ` Nicolin Chen
2025-11-20 7:59 ` Tian, Kevin
2025-11-20 14:59 ` Jason Gunthorpe
2025-11-07 16:49 ` [PATCH 6/9] iommufd: Have pfn_reader process DMABUF iopt_pages Jason Gunthorpe
2025-11-13 23:39 ` Nicolin Chen
2025-11-18 19:38 ` Jason Gunthorpe
2025-11-20 8:04 ` Tian, Kevin
2025-11-21 0:47 ` Jason Gunthorpe
2025-11-07 16:49 ` [PATCH 7/9] iommufd: Have iopt_map_file_pages convert the fd to a file Jason Gunthorpe
2025-11-13 23:43 ` Nicolin Chen
2025-11-20 8:05 ` Tian, Kevin
2025-11-07 16:49 ` [PATCH 8/9] iommufd: Accept a DMABUF through IOMMU_IOAS_MAP_FILE Jason Gunthorpe
2025-11-14 0:05 ` Nicolin Chen
2025-11-18 19:44 ` Jason Gunthorpe
2025-11-18 19:57 ` Nicolin Chen
2025-11-20 8:06 ` Tian, Kevin
2025-11-07 16:49 ` [PATCH 9/9] iommufd/selftest: Add some tests for the dmabuf flow Jason Gunthorpe
2025-11-07 19:43 ` Nicolin Chen
2025-11-18 19:25 ` Jason Gunthorpe
2025-11-20 8:06 ` Tian, Kevin
2025-11-07 17:52 ` Nicolin Chen [this message]
2025-11-13 6:33 ` [PATCH 0/9] Initial DMABUF support for iommufd Shuai Xue
2025-11-13 7:34 ` Nicolin Chen
2025-11-13 11:32 ` Shuai Xue
2025-11-13 17:44 ` Nicolin Chen
2025-11-13 18:37 ` Alex Williamson
2025-11-17 15:50 ` Jason Gunthorpe
2025-11-18 5:37 ` Kasireddy, Vivek
2025-11-18 14:59 ` 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=aQ4x7UiMMCB0m0dH@Asurada-Nvidia \
--to=nicolinc@nvidia.com \
--cc=alex@shazbot.org \
--cc=christian.koenig@amd.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=iommu@lists.linux.dev \
--cc=jgg@nvidia.com \
--cc=joro@8bytes.org \
--cc=kevin.tian@intel.com \
--cc=kjaju@nvidia.com \
--cc=kvm@vger.kernel.org \
--cc=leon@kernel.org \
--cc=linaro-mm-sig@lists.linaro.org \
--cc=linux-kselftest@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=mochs@nvidia.com \
--cc=patches@lists.linux.dev \
--cc=robin.murphy@arm.com \
--cc=shuah@kernel.org \
--cc=simona.vetter@ffwll.ch \
--cc=sumit.semwal@linaro.org \
--cc=vivek.kasireddy@intel.com \
--cc=will@kernel.org \
--cc=yilun.xu@linux.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).