linux-kernel - Re: [PATCH 4/4] drm/virtio: Use IDAs more efficiently

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Date:   Tue, 2 Oct 2018 13:43:28 +0200
From:   Gerd Hoffmann <kraxel@...hat.com>
To:     Matthew Wilcox <willy@...radead.org>
Cc:     David Airlie <airlied@...ux.ie>, dri-devel@...ts.freedesktop.org,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] drm/virtio: Use IDAs more efficiently

On Wed, Sep 26, 2018 at 09:04:55AM -0700, Matthew Wilcox wrote:
> On Wed, Sep 26, 2018 at 09:00:31AM -0700, Matthew Wilcox wrote:
> > @@ -59,6 +59,7 @@ static int virtio_gpu_context_create(struct virtio_gpu_device *vgdev,
> >  
> >  	if (handle < 0)
> >  		return handle;
> > +	handle++;
> >  	virtio_gpu_cmd_context_create(vgdev, handle, nlen, name);
> >  	return handle;
> >  }
> 
> Uh.  This line is missing.
> 
> -       int handle = ida_alloc_min(&vgdev->ctx_id_ida, 1, GFP_KERNEL);
> +       int handle = ida_alloc(&vgdev->ctx_id_ida, GFP_KERNEL);
> 
> It'll be there in v2 ;-)

I've touched the resource/object id handling too, see my "drm/virtio:
rework ttm resource handling" patch series
(https://patchwork.freedesktop.org/series/50382/).  Which still needs a
review btw.

I think that series obsoletes patch 3/4 (object id fixes) of your
series.  The other patches should rebase without too much trouble, you
could do that as well when preparing v2 ...

cheers,
  Gerd