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(-) -- 2.31.1
