From: Jason Wang <jasowang@redhat.com>
To: Xie Yongji <xieyongji@bytedance.com>,
mst@redhat.com, stefanha@redhat.com, sgarzare@redhat.com,
parav@nvidia.com, hch@infradead.org,
christian.brauner@canonical.com, rdunlap@infradead.org,
willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk,
bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com,
dan.carpenter@oracle.com, joro@8bytes.org,
gregkh@linuxfoundation.org, zhe.he@windriver.com,
xiaodong.liu@intel.com, joe@perches.com, robin.murphy@arm.com
Cc: songmuchun@bytedance.com,
virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, kvm@vger.kernel.org,
linux-fsdevel@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v11 11/12] vduse: Introduce VDUSE - vDPA Device in Userspace
Date: Mon, 23 Aug 2021 14:56:33 +0800 [thread overview]
Message-ID: <cfc11f6b-764b-7a52-2c4a-6fa22e6c1585@redhat.com> (raw)
In-Reply-To: <20210818120642.165-12-xieyongji@bytedance.com>
在 2021/8/18 下午8:06, Xie Yongji 写道:
> 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>
Acked-by: Jason Wang <jasowang@redhat.com>
WARNING: multiple messages have this Message-ID (diff)
From: Jason Wang <jasowang@redhat.com>
To: Xie Yongji <xieyongji@bytedance.com>,
mst@redhat.com, stefanha@redhat.com, sgarzare@redhat.com,
parav@nvidia.com, hch@infradead.org,
christian.brauner@canonical.com, rdunlap@infradead.org,
willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk,
bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com,
dan.carpenter@oracle.com, joro@8bytes.org,
gregkh@linuxfoundation.org, zhe.he@windriver.com,
xiaodong.liu@intel.com, joe@perches.com, robin.murphy@arm.com
Cc: kvm@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
iommu@lists.linux-foundation.org, songmuchun@bytedance.com,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH v11 11/12] vduse: Introduce VDUSE - vDPA Device in Userspace
Date: Mon, 23 Aug 2021 14:56:33 +0800 [thread overview]
Message-ID: <cfc11f6b-764b-7a52-2c4a-6fa22e6c1585@redhat.com> (raw)
In-Reply-To: <20210818120642.165-12-xieyongji@bytedance.com>
在 2021/8/18 下午8:06, Xie Yongji 写道:
> 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>
Acked-by: Jason Wang <jasowang@redhat.com>
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
WARNING: multiple messages have this Message-ID (diff)
From: Jason Wang <jasowang@redhat.com>
To: Xie Yongji <xieyongji@bytedance.com>,
mst@redhat.com, stefanha@redhat.com, sgarzare@redhat.com,
parav@nvidia.com, hch@infradead.org,
christian.brauner@canonical.com, rdunlap@infradead.org,
willy@infradead.org, viro@zeniv.linux.org.uk, axboe@kernel.dk,
bcrl@kvack.org, corbet@lwn.net, mika.penttila@nextfour.com,
dan.carpenter@oracle.com, joro@8bytes.org,
gregkh@linuxfoundation.org, zhe.he@windriver.com,
xiaodong.liu@intel.com, joe@perches.com, robin.murphy@arm.com
Cc: kvm@vger.kernel.org, netdev@vger.kernel.org,
linux-kernel@vger.kernel.org,
virtualization@lists.linux-foundation.org,
iommu@lists.linux-foundation.org, songmuchun@bytedance.com,
linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH v11 11/12] vduse: Introduce VDUSE - vDPA Device in Userspace
Date: Mon, 23 Aug 2021 14:56:33 +0800 [thread overview]
Message-ID: <cfc11f6b-764b-7a52-2c4a-6fa22e6c1585@redhat.com> (raw)
In-Reply-To: <20210818120642.165-12-xieyongji@bytedance.com>
在 2021/8/18 下午8:06, Xie Yongji 写道:
> 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>
Acked-by: Jason Wang <jasowang@redhat.com>
_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
next prev parent reply other threads:[~2021-08-23 6:56 UTC|newest]
Thread overview: 77+ 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 ` Xie Yongji
2021-08-18 12:06 ` [PATCH v11 01/12] iova: Export alloc_iova_fast() and free_iova_fast() Xie Yongji
2021-08-18 12:06 ` Xie Yongji
2021-08-23 6:24 ` Jason Wang
2021-08-23 6:24 ` Jason Wang
2021-08-23 6:24 ` Jason Wang
2021-08-24 18:08 ` Michael S. Tsirkin
2021-08-24 18:08 ` Michael S. Tsirkin
2021-08-24 18:08 ` Michael S. Tsirkin
2021-08-25 9:55 ` Will Deacon
2021-08-25 9:55 ` Will Deacon
2021-08-25 9:55 ` Will Deacon
2021-08-25 10:39 ` John Garry
2021-08-25 10:39 ` John Garry
2021-08-25 12:17 ` Yongji Xie
2021-08-25 12:17 ` Yongji Xie
2021-08-27 9:03 ` John Garry
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 ` Xie Yongji
2021-08-18 12:06 ` [PATCH v11 03/12] vdpa: Fix some coding style issues Xie Yongji
2021-08-18 12:06 ` Xie Yongji
2021-08-23 6:27 ` Jason Wang
2021-08-23 6:27 ` Jason Wang
2021-08-23 6:27 ` Jason Wang
2021-08-24 11:09 ` Stefano Garzarella
2021-08-24 11:09 ` Stefano Garzarella
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
2021-08-18 12:06 ` Xie Yongji
2021-08-23 6:31 ` Jason Wang
2021-08-23 6:31 ` Jason Wang
2021-08-23 6:31 ` Jason Wang
2021-08-23 7:44 ` Yongji Xie
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
2021-08-18 12:06 ` Xie Yongji
2021-08-23 6:32 ` Jason Wang
2021-08-23 6:32 ` Jason Wang
2021-08-23 6:32 ` Jason Wang
2021-08-24 11:12 ` Stefano Garzarella
2021-08-24 11:12 ` Stefano Garzarella
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 ` 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 ` 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 ` 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 ` Xie Yongji
2021-08-18 12:06 ` [PATCH v11 10/12] vduse: Implement an MMU-based software IOTLB Xie Yongji
2021-08-18 12:06 ` Xie Yongji
2021-08-27 8:57 ` John Garry
2021-08-27 8:57 ` John Garry
2021-08-27 9:25 ` Yongji Xie
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
2021-08-18 12:06 ` Xie Yongji
2021-08-19 3:09 ` kernel test robot
2021-08-23 6:56 ` Jason Wang [this message]
2021-08-23 6:56 ` Jason Wang
2021-08-23 6:56 ` Jason Wang
2021-08-24 18:10 ` Michael S. Tsirkin
2021-08-24 18:10 ` Michael S. Tsirkin
2021-08-24 18:10 ` Michael S. Tsirkin
2021-08-25 5:37 ` Yongji Xie
2021-08-25 5:37 ` Yongji Xie
2021-08-18 12:06 ` [PATCH v11 12/12] Documentation: Add documentation for VDUSE Xie Yongji
2021-08-18 12:06 ` Xie Yongji
2021-08-23 6:57 ` Jason Wang
2021-08-23 6:57 ` Jason Wang
2021-08-23 6:57 ` Jason Wang
2021-08-23 7:54 ` Jason Wang
2021-08-23 7:54 ` Jason Wang
2021-08-23 7:54 ` Jason Wang
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