QE tested this series with regression testing on real nic, there are no new issues. Tested-by: Lei Yang <leiyang@xxxxxxxxxx> On Fri, Sep 15, 2023 at 2:34 PM Si-Wei Liu <si-wei.liu@xxxxxxxxxx> wrote: > > > > On 9/13/2023 9:08 AM, Eugenio Perez Martin wrote: > > On Wed, Sep 13, 2023 at 3:03 AM Lei Yang <leiyang@xxxxxxxxxx> wrote: > >> Hi Dragos, Eugenio and Si-Wei > >> > >> My name is Lei Yang, a software Quality Engineer from Red Hat. And > >> always paying attention to improving the live migration downtime > >> issues because there are others QE asked about this problem when I > >> share live migration status recently. Therefore I would like to test > >> it in my environment. Before the testing I want to know if there is an > >> expectation of downtime range based on this series of patches? In > >> addition, QE also can help do a regression test based on this series > >> of patches if there is a requirement. > >> > > Hi Lei, > > > > Thanks for offering the testing bandwidth! > > > > I think we can only do regression tests here, as the userland part is > > still not sent to qemu. > Right. Regression for now, even QEMU has it, to exercise the relevant > feature it would need a supporting firmware that is not yet available > for now. Just stay tuned. > > thanks for your patience, > -Siwei > > > >> Regards and thanks > >> Lei > >> > >> > >> On Tue, Sep 12, 2023 at 9:04 PM Dragos Tatulea <dtatulea@xxxxxxxxxx> wrote: > >>> This patch series adds support for vq descriptor table mappings which > >>> are used to improve vdpa live migration downtime. The improvement comes > >>> from using smaller mappings which take less time to create and destroy > >>> in hw. > >>> > >>> The first part adds the vdpa core changes from Si-Wei [0]. > >>> > >>> The second part adds support in mlx5_vdpa: > >>> - Refactor the mr code to be able to cleanly add descriptor mappings. > >>> - Add hardware descriptor mr support. > >>> - Properly update iotlb for cvq during ASID switch. > >>> > >>> [0] https://lore.kernel.org/virtualization/1694248959-13369-1-git-send-email-si-wei.liu@xxxxxxxxxx > >>> > >>> Dragos Tatulea (13): > >>> vdpa/mlx5: Create helper function for dma mappings > >>> vdpa/mlx5: Decouple cvq iotlb handling from hw mapping code > >>> vdpa/mlx5: Take cvq iotlb lock during refresh > >>> vdpa/mlx5: Collapse "dvq" mr add/delete functions > >>> vdpa/mlx5: Rename mr destroy functions > >>> vdpa/mlx5: Allow creation/deletion of any given mr struct > >>> vdpa/mlx5: Move mr mutex out of mr struct > >>> vdpa/mlx5: Improve mr update flow > >>> vdpa/mlx5: Introduce mr for vq descriptor > >>> vdpa/mlx5: Enable hw support for vq descriptor mapping > >>> vdpa/mlx5: Make iotlb helper functions more generic > >>> vdpa/mlx5: Update cvq iotlb mapping on ASID change > >>> Cover letter: vdpa/mlx5: Add support for vq descriptor mappings > >>> > >>> Si-Wei Liu (3): > >>> vdpa: introduce dedicated descriptor group for virtqueue > >>> vhost-vdpa: introduce descriptor group backend feature > >>> vhost-vdpa: uAPI to get dedicated descriptor group id > >>> > >>> drivers/vdpa/mlx5/core/mlx5_vdpa.h | 31 +++-- > >>> drivers/vdpa/mlx5/core/mr.c | 191 ++++++++++++++++------------- > >>> drivers/vdpa/mlx5/core/resources.c | 6 +- > >>> drivers/vdpa/mlx5/net/mlx5_vnet.c | 100 ++++++++++----- > >>> drivers/vhost/vdpa.c | 27 ++++ > >>> include/linux/mlx5/mlx5_ifc.h | 8 +- > >>> include/linux/mlx5/mlx5_ifc_vdpa.h | 7 +- > >>> include/linux/vdpa.h | 11 ++ > >>> include/uapi/linux/vhost.h | 8 ++ > >>> include/uapi/linux/vhost_types.h | 5 + > >>> 10 files changed, 264 insertions(+), 130 deletions(-) > >>> > >>> -- > >>> 2.41.0 > >>> >
