User space may try to set status of same value multiple times,
this patch handles this case more efficiently by ignoring the
setting of the same status value.
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Link: https://lore.kernel.org/r/1591352835-22441-3-git-send-email-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit move IRQ request and free operations from probe()
to VIRTIO status change handler to comply with VIRTIO spec.
VIRTIO spec 1.1, section 2.1.2 Device Requirements: Device Status Field
The device MUST NOT consume buffers or send any used buffer
notifications to the driver before DRIVER_OK.
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Link: https://lore.kernel.org/r/1589270444-3669-1-git-send-email-lingshan.zhu@intel.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
get_vq_align returns u16 now, but that's not enough for
systems/devices with 64K pages. All callers assign it to
a u32 variable anyway, so let's just change the return
value type to u32.
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
drivers/vdpa/ifcvf/ifcvf_main.c:34:24:
warning: variable ‘ifcvf’ set but not used [-Wunused-but-set-variable]
drivers/vdpa/ifcvf/ifcvf_base.c:304:31:
warning: variable ‘ifcvf_lm’ set but not used [-Wunused-but-set-variable]
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/20200402024626.32944-1-yuehaibing@huawei.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We have both vhost and virtio drivers that depend on vdpa.
It's easier to locate it at a top level directory otherwise
we run into issues e.g. if vhost is built-in but virtio
is modular. Let's just move it up a level.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
