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Re: [PATCH v6 resend 0/4] add generic vDPA device support
From: |
Jason Wang |
Subject: |
Re: [PATCH v6 resend 0/4] add generic vDPA device support |
Date: |
Tue, 31 May 2022 15:00:05 +0800 |
On Mon, May 30, 2022 at 12:16 PM Longpeng (Mike, Cloud Infrastructure
Service Product Dept.) <longpeng2@huawei.com> wrote:
>
> Hi guys,
>
> Ping...Any other comments?
Will go through this and try to provide some acks soon.
Thanks
>
> 在 2022/5/14 12:11, Longpeng(Mike) 写道:
> > From: Longpeng <longpeng2@huawei.com>
> >
> > Hi guys,
> >
> > With the generic vDPA device, QEMU won't need to touch the device
> > types any more, such like vfio.
> >
> > We can use the generic vDPA device as follow:
> > -device vhost-vdpa-device-pci,vhostdev=/dev/vhost-vdpa-X
> > Or
> > -M microvm -m 512m -smp 2 -kernel ... -initrd ... -device \
> > vhost-vdpa-device,vhostdev=/dev/vhost-vdpa-x
> >
> > I've done some simple tests on Huawei's offloading card (net, 0.95).
> >
> > Changes v5 -> v6:
> > Patch 2:
> > - Turn to the original approach in the RFC to initialize the
> > virtio_pci_id_info array. [Michael]
> >
> > https://lore.kernel.org/all/20220105005900.860-2-longpeng2@huawei.com/
> > Patch 3:
> > - Fix logical error of exception handler around the post_init.
> > [Stefano]
> > - Fix some coding style warnings. [Stefano]
> > Patch 4:
> > - Fix some coding style warnings. [Stefano]
> >
> > Changes v4 -> v5:
> > Patch 3:
> > - remove vhostfd [Jason]
> > - support virtio-mmio [Jason]
> >
> > Changes v3 -> v4:
> > v3: https://www.mail-archive.com/qemu-devel@nongnu.org/msg877015.html
> > - reorganize the series [Stefano]
> > - fix some typos [Stefano]
> > - fix logical error in vhost_vdpa_device_realize [Stefano]
> >
> > Changes v2 -> v3
> > Patch 4 & 5:
> > - only call vdpa ioctls in vdpa-dev.c [Stefano, Longpeng]
> > - s/VQS_NUM/VQS_COUNT [Stefano]
> > - check both vdpa_dev_fd and vdpa_dev [Stefano]
> > Patch 6:
> > - move all steps into vhost_vdpa_device_unrealize. [Stefano]
> >
> > Changes RFC -> v2
> > Patch 1:
> > - rename 'pdev_id' to 'trans_devid' [Michael]
> > - only use transitional device id for the devices
> > listed in the spec [Michael]
> > - use macros to make the id_info table clearer [Longpeng]
> > - add some modern devices in the id_info table [Longpeng]
> > Patch 2:
> > - remove the GET_VECTORS_NUM command [Jason]
> > Patch 4:
> > - expose vdpa_dev_fd as a QOM preperty [Stefan]
> > - introduce vhost_vdpa_device_get_u32 as a common
> > function to make the code clearer [Stefan]
> > - fix the misleading description of 'dc->desc' [Stefano]
> > Patch 5:
> > - check returned number of virtqueues [Stefan]
> > Patch 6:
> > - init s->num_queues [Stefano]
> > - free s->dev.vqs [Stefano]
> >
> >
> > Longpeng (Mike) (4):
> > linux-headers: Update headers to Linux 5.18-rc6
> > virtio: get class_id and pci device id by the virtio id
> > vdpa: add vdpa-dev support
> > vdpa: add vdpa-dev-pci support
> >
> > hw/virtio/Kconfig | 5 +
> > hw/virtio/meson.build | 2 +
> > hw/virtio/vdpa-dev-pci.c | 102 ++++++++++
> > hw/virtio/vdpa-dev.c | 377 +++++++++++++++++++++++++++++++++++
> > hw/virtio/virtio-pci.c | 88 ++++++++
> > hw/virtio/virtio-pci.h | 5 +
> > include/hw/virtio/vdpa-dev.h | 43 ++++
> > linux-headers/linux/vhost.h | 7 +
> > 8 files changed, 629 insertions(+)
> > create mode 100644 hw/virtio/vdpa-dev-pci.c
> > create mode 100644 hw/virtio/vdpa-dev.c
> > create mode 100644 include/hw/virtio/vdpa-dev.h
> >
>
- [PATCH v6 resend 0/4] add generic vDPA device support, Longpeng(Mike), 2022/05/14
- [PATCH v6 resend 1/4] linux-headers: Update headers to Linux 5.18-rc6, Longpeng(Mike), 2022/05/14
- [PATCH v6 resend 2/4] virtio: get class_id and pci device id by the virtio id, Longpeng(Mike), 2022/05/14
- [PATCH v6 resend 4/4] vdpa: add vdpa-dev-pci support, Longpeng(Mike), 2022/05/14
- [PATCH v6 resend 3/4] vdpa: add vdpa-dev support, Longpeng(Mike), 2022/05/14
- Re: [PATCH v6 resend 0/4] add generic vDPA device support, Longpeng (Mike, Cloud Infrastructure Service Product Dept.), 2022/05/30