lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-ID: <20231009112401.1060447-1-dtatulea@nvidia.com>
Date:   Mon, 9 Oct 2023 14:23:45 +0300
From:   Dragos Tatulea <dtatulea@...dia.com>
To:     "Michael S . Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        Eugenio Perez Martin <eperezma@...hat.com>,
        Si-Wei Liu <si-wei.liu@...cle.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Leon Romanovsky <leon@...nel.org>,
        <virtualization@...ts.linux-foundation.org>
CC:     Dragos Tatulea <dtatulea@...dia.com>, <kvm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Parav Pandit <parav@...dia.com>,
        Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: [PATCH vhost v3 00/16] vdpa: Add support for vq descriptor mappings

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.

Changes in v3:

- dup_iotlb now checks for src == dst case and returns an error.
- Renamed iotlb parameter in dup_iotlb to dst.
- Removed a redundant check of the asid value.
- Fixed a commit message.
- mx5_ifc.h patch has been applied to mlx5-vhost tree. When applying
  this series please pull from that tree first.

Changes in v2:

- The "vdpa/mlx5: Enable hw support for vq descriptor mapping" change
  was split off into two patches to avoid merge conflicts into the tree
  of Linus.

  The first patch contains only changes for mlx5_ifc.h. This must be
  applied into the mlx5-vdpa tree [1] first. Once this patch is applied
  on mlx5-vdpa, the change has to be pulled fom mlx5-vdpa into the vhost
  tree and only then the remaining patches can be applied.

[0] https://lore.kernel.org/virtualization/1694248959-13369-1-git-send-email-si-wei.liu@oracle.com
[1] https://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux.git/log/?h=mlx5-vhost

Dragos Tatulea (13):
  vdpa/mlx5: Expose descriptor group mkey hw capability
  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

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        | 194 ++++++++++++++++-------------
 drivers/vdpa/mlx5/core/resources.c |   6 +-
 drivers/vdpa/mlx5/net/mlx5_vnet.c  |  98 ++++++++++-----
 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, 266 insertions(+), 129 deletions(-)

-- 
2.41.0

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ