[v2,0/3] vdpa: map shadow vrings with MAP_SHARED

Message

Eugenio Perez Martin June 2, 2023, 2:38 p.m. UTC

The vdpa devices that use va addresses neeeds these maps shared.  Otherwise,
vhost_vdpa checks will refuse to accept the maps.

Discovered this issue while testing SVQ with vdpa sim, now defaulting to
use_va=on.

v2:
* Use PROT_READ|PROT_WRITE instead of O_RDWR. The latter does not work for
  mmap.

Eugenio Pérez (3):
  vdpa: do not block migration if device has cvq and x-svq=on
  vdpa: reorder vhost_vdpa_net_cvq_cmd_page_len function
  vdpa: map shadow vrings with MAP_SHARED

 hw/virtio/vhost-shadow-virtqueue.c | 18 ++++-----
 net/vhost-vdpa.c                   | 59 ++++++++++++++++--------------
 2 files changed, 40 insertions(+), 37 deletions(-)