Re: [PATCH 11/21] vhost-vdpa: introduce asid based IOTLB

From: Jason Wang
Date: Wed Dec 30 2020 - 01:36:29 EST



On 2020/12/29 下午8:05, Eli Cohen wrote:
+
+static int vhost_vdpa_remove_as(struct vhost_vdpa *v, u32 asid)
The return value is never interpreted. I think it should either be made
void or return values checked.


Right, will make it void.



+{
+ struct vhost_vdpa_as *as = asid_to_as(v, asid);
+
+ /* Remove default address space is not allowed */
+ if (asid == 0)
+ return -EINVAL;
Can you explain why? I think you have a memory leak due to this as no
one will ever free as with id 0.


Looks like a bug. Will remove this.

Thanks