On Mon, May 30, 2022 at 12:16 PM Longpeng (Mike, Cloud Infrastructure Service Product Dept.) <longpe...@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 <longpe...@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-longpe...@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 > > >
