From: Yongji Xie <xieyongji@bytedance.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: "Jason Wang" <jasowang@redhat.com>,
"Stefan Hajnoczi" <stefanha@redhat.com>,
"Stefano Garzarella" <sgarzare@redhat.com>,
"Parav Pandit" <parav@nvidia.com>,
"Christoph Hellwig" <hch@infradead.org>,
"Christian Brauner" <christian.brauner@canonical.com>,
"Randy Dunlap" <rdunlap@infradead.org>,
"Matthew Wilcox" <willy@infradead.org>,
"Al Viro" <viro@zeniv.linux.org.uk>,
"Jens Axboe" <axboe@kernel.dk>,
bcrl@kvack.org, "Jonathan Corbet" <corbet@lwn.net>,
"Mika Penttilä" <mika.penttila@nextfour.com>,
"Dan Carpenter" <dan.carpenter@oracle.com>,
joro@8bytes.org, "Greg KH" <gregkh@linuxfoundation.org>,
"He Zhe" <zhe.he@windriver.com>,
"Liu Xiaodong" <xiaodong.liu@intel.com>,
"Joe Perches" <joe@perches.com>,
"Robin Murphy" <robin.murphy@arm.com>,
songmuchun@bytedance.com,
virtualization <virtualization@lists.linux-foundation.org>,
netdev@vger.kernel.org, kvm <kvm@vger.kernel.org>,
linux-fsdevel@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v11 11/12] vduse: Introduce VDUSE - vDPA Device in Userspace
Date: Wed, 25 Aug 2021 13:37:10 +0800 [thread overview]
Message-ID: <CACycT3s0Pp+LOD2h_vocPUMEqMhYioJmRPFYGL=Su-eL2p2O3w@mail.gmail.com> (raw)
In-Reply-To: <20210824140945-mutt-send-email-mst@kernel.org>
On Wed, Aug 25, 2021 at 2:10 AM Michael S. Tsirkin <mst@redhat.com> wrote:
>
> On Wed, Aug 18, 2021 at 08:06:41PM +0800, Xie Yongji wrote:
> > This VDUSE driver enables implementing software-emulated vDPA
> > devices in userspace. The vDPA device is created by
> > ioctl(VDUSE_CREATE_DEV) on /dev/vduse/control. Then a char device
> > interface (/dev/vduse/$NAME) is exported to userspace for device
> > emulation.
> >
> > In order to make the device emulation more secure, the device's
> > control path is handled in kernel. A message mechnism is introduced
> > to forward some dataplane related control messages to userspace.
> >
> > And in the data path, the DMA buffer will be mapped into userspace
> > address space through different ways depending on the vDPA bus to
> > which the vDPA device is attached. In virtio-vdpa case, the MMU-based
> > software IOTLB is used to achieve that. And in vhost-vdpa case, the
> > DMA buffer is reside in a userspace memory region which can be shared
> > to the VDUSE userspace processs via transferring the shmfd.
> >
> > For more details on VDUSE design and usage, please see the follow-on
> > Documentation commit.
> >
> > Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
>
> Build bot seems unhappy with this patch.
>
Yes, this is because the series relies on the unmerged patch:
https://lore.kernel.org/lkml/20210705071910.31965-1-jasowang@redhat.com/
Do I need to remove this dependency in the next version?
Thanks,
Yongji
next prev parent reply other threads:[~2021-08-25 5:37 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-18 12:06 [PATCH v11 00/12] Introduce VDUSE - vDPA Device in Userspace Xie Yongji
2021-08-18 12:06 ` [PATCH v11 01/12] iova: Export alloc_iova_fast() and free_iova_fast() Xie Yongji
2021-08-23 6:24 ` Jason Wang
2021-08-24 18:08 ` Michael S. Tsirkin
2021-08-25 9:55 ` Will Deacon
2021-08-25 10:39 ` John Garry
2021-08-25 12:17 ` Yongji Xie
2021-08-27 9:03 ` John Garry
2021-08-18 12:06 ` [PATCH v11 02/12] file: Export receive_fd() to modules Xie Yongji
2021-08-18 12:06 ` [PATCH v11 03/12] vdpa: Fix some coding style issues Xie Yongji
2021-08-23 6:27 ` Jason Wang
2021-08-24 11:09 ` Stefano Garzarella
2021-08-18 12:06 ` [PATCH v11 04/12] vdpa: Add reset callback in vdpa_config_ops Xie Yongji
2021-08-23 6:31 ` Jason Wang
2021-08-23 7:44 ` Yongji Xie
2021-08-18 12:06 ` [PATCH v11 05/12] vhost-vdpa: Handle the failure of vdpa_reset() Xie Yongji
2021-08-23 6:32 ` Jason Wang
2021-08-24 11:12 ` Stefano Garzarella
2021-08-18 12:06 ` [PATCH v11 06/12] vhost-iotlb: Add an opaque pointer for vhost IOTLB Xie Yongji
2021-08-18 12:06 ` [PATCH v11 07/12] vdpa: Add an opaque pointer for vdpa_config_ops.dma_map() Xie Yongji
2021-08-18 12:06 ` [PATCH v11 08/12] vdpa: factor out vhost_vdpa_pa_map() and vhost_vdpa_pa_unmap() Xie Yongji
2021-08-18 12:06 ` [PATCH v11 09/12] vdpa: Support transferring virtual addressing during DMA mapping Xie Yongji
2021-08-18 12:06 ` [PATCH v11 10/12] vduse: Implement an MMU-based software IOTLB Xie Yongji
2021-08-27 8:57 ` John Garry
2021-08-27 9:25 ` Yongji Xie
2021-08-18 12:06 ` [PATCH v11 11/12] vduse: Introduce VDUSE - vDPA Device in Userspace Xie Yongji
2021-08-23 6:56 ` Jason Wang
2021-08-24 18:10 ` Michael S. Tsirkin
2021-08-25 5:37 ` Yongji Xie [this message]
2021-08-18 12:06 ` [PATCH v11 12/12] Documentation: Add documentation for VDUSE Xie Yongji
2021-08-23 6:57 ` Jason Wang
2021-08-23 7:54 ` Jason Wang
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