On Wed, Jan 5, 2022 at 8:59 AM Longpeng(Mike) <longpe...@huawei.com> wrote: > > From: Longpeng <longpe...@huawei.com> > > To support generic vdpa deivce, we need add the following ioctls: > - GET_VECTORS_NUM: the count of vectors that supported
Does this mean MSI vectors? If yes, it looks like a layer violation: vhost is transport independent. And it reveals device implementation details which block (cross vendor) migration. Thanks > - GET_CONFIG_SIZE: the size of the virtio config space > - GET_VQS_NUM: the count of virtqueues that exported > > Signed-off-by: Longpeng <longpe...@huawei.com> > --- > linux-headers/linux/vhost.h | 10 ++++++++++ > 1 file changed, 10 insertions(+) > > diff --git a/linux-headers/linux/vhost.h b/linux-headers/linux/vhost.h > index c998860d7b..c5edd75d15 100644 > --- a/linux-headers/linux/vhost.h > +++ b/linux-headers/linux/vhost.h > @@ -150,4 +150,14 @@ > /* Get the valid iova range */ > #define VHOST_VDPA_GET_IOVA_RANGE _IOR(VHOST_VIRTIO, 0x78, \ > struct vhost_vdpa_iova_range) > + > +/* Get the number of vectors */ > +#define VHOST_VDPA_GET_VECTORS_NUM _IOR(VHOST_VIRTIO, 0x79, int) > + > +/* Get the virtio config size */ > +#define VHOST_VDPA_GET_CONFIG_SIZE _IOR(VHOST_VIRTIO, 0x80, int) > + > +/* Get the number of virtqueues */ > +#define VHOST_VDPA_GET_VQS_NUM _IOR(VHOST_VIRTIO, 0x81, int) > + > #endif > -- > 2.23.0 >
