On Tue, Jan 31, 2023 at 03:06:35PM -0500, Matthew Rosato wrote:
> @@ -799,13 +794,14 @@ EXPORT_SYMBOL_GPL(vfio_file_enforced_coherent);
> void vfio_file_set_kvm(struct file *file, struct kvm *kvm)
> {
> struct vfio_group *group = file->private_data;
> + unsigned long flags;
>
> if (!vfio_file_is_group(file))
> return;
>
> - mutex_lock(&group->group_lock);
> + spin_lock_irqsave(&group->kvm_ref_lock, flags);
> group->kvm = kvm;
> - mutex_unlock(&group->group_lock);
> + spin_unlock_irqrestore(&group->kvm_ref_lock, flags);
We know we are in a sleeping context here so these are just
'spin_lock()', same with the other one
Otherwise it seems Ok to me
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Jason
