linux-kernel - Re: [PATCH v6 06/10] drm/qxl: properly pin/unpin shadow

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Message-ID: <26e46352-9804-f7bd-416e-9304de839e22@suse.de>
Date:   Thu, 4 Feb 2021 19:18:48 +0100
From:   Thomas Zimmermann <tzimmermann@...e.de>
To:     Gerd Hoffmann <kraxel@...hat.com>, dri-devel@...ts.freedesktop.org
Cc:     Dave Airlie <airlied@...hat.com>, David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        "open list:DRM DRIVER FOR QXL VIRTUAL GPU" 
        <virtualization@...ts.linux-foundation.org>,
        "open list:DRM DRIVER FOR QXL VIRTUAL GPU" 
        <spice-devel@...ts.freedesktop.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 06/10] drm/qxl: properly pin/unpin shadow



Am 04.02.21 um 15:57 schrieb Gerd Hoffmann:
> Suggested-by: Thomas Zimmermann <tzimmermann@...e.de>
> Signed-off-by: Gerd Hoffmann <kraxel@...hat.com>

Thanks for this.

Acked-by: Thomas Zimmermann <tzimmermann@...e.de>


> ---
>   drivers/gpu/drm/qxl/qxl_display.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
> index 60331e31861a..d25fd3acc891 100644
> --- a/drivers/gpu/drm/qxl/qxl_display.c
> +++ b/drivers/gpu/drm/qxl/qxl_display.c
> @@ -802,12 +802,14 @@ static int qxl_plane_prepare_fb(struct drm_plane *plane,
>   		}
>   		if (user_bo->shadow != qdev->dumb_shadow_bo) {
>   			if (user_bo->shadow) {
> +				qxl_bo_unpin(user_bo->shadow);
>   				drm_gem_object_put
>   					(&user_bo->shadow->tbo.base);
>   				user_bo->shadow = NULL;
>   			}
>   			drm_gem_object_get(&qdev->dumb_shadow_bo->tbo.base);
>   			user_bo->shadow = qdev->dumb_shadow_bo;
> +			qxl_bo_pin(user_bo->shadow);
>   		}
>   	}
>   
> @@ -833,6 +835,7 @@ static void qxl_plane_cleanup_fb(struct drm_plane *plane,
>   	qxl_bo_unpin(user_bo);
>   
>   	if (old_state->fb != plane->state->fb && user_bo->shadow) {
> +		qxl_bo_unpin(user_bo->shadow);
>   		drm_gem_object_put(&user_bo->shadow->tbo.base);
>   		user_bo->shadow = NULL;
>   	}
> @@ -1230,6 +1233,7 @@ int qxl_modeset_init(struct qxl_device *qdev)
>   void qxl_modeset_fini(struct qxl_device *qdev)
>   {
>   	if (qdev->dumb_shadow_bo) {
> +		qxl_bo_unpin(qdev->dumb_shadow_bo);
>   		drm_gem_object_put(&qdev->dumb_shadow_bo->tbo.base);
>   		qdev->dumb_shadow_bo = NULL;
>   	}
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer



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