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b=DFcKVZy7gclUG/byVeXyspw7xJNBVkL8gsDmv9R+d/6A5AyXNa2iI0lTB4ktqj67vkP9nl 8j65zsDgRaD2CbBafz61Rs27VJmiK2JMvxc7CmI+2KHbeW0K0W4LXwMNpqS/vb8DRPHldT h9W/qk1F3Fxd7GSP49ArX8aoI0I4sp0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-435-SB-rcyB7PtSmJxmCL1E-bA-1; Tue, 08 Sep 2020 03:07:29 -0400 X-MC-Unique: SB-rcyB7PtSmJxmCL1E-bA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 5D03180EDA1; Tue, 8 Sep 2020 07:07:28 +0000 (UTC) Received: from sirius.home.kraxel.org (ovpn-112-56.ams2.redhat.com [10.36.112.56]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7014360C15; Tue, 8 Sep 2020 07:07:24 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id B6A021FCEE; Tue, 8 Sep 2020 09:07:23 +0200 (CEST) From: Gerd Hoffmann To: dri-devel@lists.freedesktop.org Subject: [PATCH 2/3] drm/virtio: return virtio_gpu_queue errors Date: Tue, 8 Sep 2020 09:07:22 +0200 Message-Id: <20200908070723.6394-3-kraxel@redhat.com> In-Reply-To: <20200908070723.6394-1-kraxel@redhat.com> References: <20200908070723.6394-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Cc: David Airlie , open list , Daniel Vetter , "open list:VIRTIO GPU DRIVER" X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" In case queuing virtio commands fails (can happen when the device got unplugged) pass up the error. Signed-off-by: Gerd Hoffmann --- drivers/gpu/drm/virtio/virtgpu_vq.c | 36 +++++++++++++++-------------- 1 file changed, 19 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index c93c2db35aaf..b1884e6e242c 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -320,13 +320,13 @@ static struct sg_table *vmalloc_to_sgt(char *data, uint32_t size, int *sg_ents) return sgt; } -static void virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev, - struct virtio_gpu_vbuffer *vbuf, - struct virtio_gpu_fence *fence, - int elemcnt, - struct scatterlist **sgs, - int outcnt, - int incnt) +static int virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev, + struct virtio_gpu_vbuffer *vbuf, + struct virtio_gpu_fence *fence, + int elemcnt, + struct scatterlist **sgs, + int outcnt, + int incnt) { struct virtqueue *vq = vgdev->ctrlq.vq; int ret, idx; @@ -335,7 +335,7 @@ static void virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev, if (fence && vbuf->objs) virtio_gpu_array_unlock_resv(vbuf->objs); free_vbuf(vgdev, vbuf); - return; + return -1; } if (vgdev->has_indirect) @@ -373,15 +373,16 @@ static void virtio_gpu_queue_ctrl_sgs(struct virtio_gpu_device *vgdev, spin_unlock(&vgdev->ctrlq.qlock); drm_dev_exit(idx); + return 0; } -static void virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev, - struct virtio_gpu_vbuffer *vbuf, - struct virtio_gpu_fence *fence) +static int virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev, + struct virtio_gpu_vbuffer *vbuf, + struct virtio_gpu_fence *fence) { struct scatterlist *sgs[3], vcmd, vout, vresp; struct sg_table *sgt = NULL; - int elemcnt = 0, outcnt = 0, incnt = 0; + int elemcnt = 0, outcnt = 0, incnt = 0, ret; /* set up vcmd */ sg_init_one(&vcmd, vbuf->buf, vbuf->size); @@ -398,7 +399,7 @@ static void virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev, if (!sgt) { if (fence && vbuf->objs) virtio_gpu_array_unlock_resv(vbuf->objs); - return; + return -1; } elemcnt += sg_ents; @@ -419,13 +420,14 @@ static void virtio_gpu_queue_fenced_ctrl_buffer(struct virtio_gpu_device *vgdev, incnt++; } - virtio_gpu_queue_ctrl_sgs(vgdev, vbuf, fence, elemcnt, sgs, outcnt, - incnt); + ret = virtio_gpu_queue_ctrl_sgs(vgdev, vbuf, fence, elemcnt, sgs, outcnt, + incnt); if (sgt) { sg_free_table(sgt); kfree(sgt); } + return ret; } void virtio_gpu_notify(struct virtio_gpu_device *vgdev) @@ -444,10 +446,10 @@ void virtio_gpu_notify(struct virtio_gpu_device *vgdev) virtqueue_notify(vgdev->ctrlq.vq); } -static void virtio_gpu_queue_ctrl_buffer(struct virtio_gpu_device *vgdev, +static int virtio_gpu_queue_ctrl_buffer(struct virtio_gpu_device *vgdev, struct virtio_gpu_vbuffer *vbuf) { - virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, NULL); + return virtio_gpu_queue_fenced_ctrl_buffer(vgdev, vbuf, NULL); } static void virtio_gpu_queue_cursor(struct virtio_gpu_device *vgdev, -- 2.27.0 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization