Messages in this thread | | | Subject | Re: [PATCH v3 04/19] vhost/iotlb: add VHOST_IOTLB_UNLIMITED macro | From | Jason Wang <> | Date | Mon, 7 Dec 2020 11:55:30 +0800 |
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On 2020/12/4 上午1:04, Stefano Garzarella wrote: > It's possible to allocate an unlimited IOTLB calling > vhost_iotlb_alloc() with 'limit' = 0. > > Add a new macro (VHOST_IOTLB_UNLIMITED) for this case and document > it in the vhost_iotlb_alloc() documentation block. > > Suggested-by: Jason Wang <jasowang@redhat.com> > Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
> --- > include/linux/vhost_iotlb.h | 2 ++ > drivers/vhost/iotlb.c | 3 ++- > 2 files changed, 4 insertions(+), 1 deletion(-) > > diff --git a/include/linux/vhost_iotlb.h b/include/linux/vhost_iotlb.h > index 6b09b786a762..47019f97f795 100644 > --- a/include/linux/vhost_iotlb.h > +++ b/include/linux/vhost_iotlb.h > @@ -4,6 +4,8 @@ > > #include <linux/interval_tree_generic.h> > > +#define VHOST_IOTLB_UNLIMITED 0 > + > struct vhost_iotlb_map { > struct rb_node rb; > struct list_head link; > diff --git a/drivers/vhost/iotlb.c b/drivers/vhost/iotlb.c > index 0fd3f87e913c..80fdde78ee5a 100644 > --- a/drivers/vhost/iotlb.c > +++ b/drivers/vhost/iotlb.c > @@ -100,7 +100,8 @@ EXPORT_SYMBOL_GPL(vhost_iotlb_del_range); > > /** > * vhost_iotlb_alloc - add a new vhost IOTLB > - * @limit: maximum number of IOTLB entries > + * @limit: maximum number of IOTLB entries (use VHOST_IOTLB_UNLIMITED for an > + * unlimited IOTLB) > * @flags: VHOST_IOTLB_FLAG_XXX > * > * Returns an error is memory allocation fails
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