Re: [RFC v3 4/5] KVM: add ioregionfd context

[Paolo Bonzini <pbonzini@xxxxxxxxxx>]

On 09/03/21 08:54, Jason Wang wrote:
> > +        return;
> > +
> > +    spin_lock(&ctx->wq.lock);
> > +    wait_event_interruptible_exclusive_locked(ctx->wq, !ctx->busy);
>
>
> Any reason that a simple mutex_lock_interruptible() can't work here?

Or alternatively why can't the callers just take the spinlock.

Paolo

> Thanks
>
>
> > +    ctx->busy = true;
> > +    spin_unlock(&ctx->wq.lock);