Re: [PATCH] drm/radeon: remove visible vram size limit on bo allocation

From: "Christian König" <deathsimple@vodafone.de>
To: Alex Deucher <alexdeucher@gmail.com>, dri-devel@lists.freedesktop.org
Cc: Alex Deucher <alexander.deucher@amd.com>
Subject: Re: [PATCH] drm/radeon: remove visible vram size limit on bo allocation
Date: Wed, 16 Jul 2014 19:56:53 +0200	[thread overview]
Message-ID: <53C6BCE5.30200@vodafone.de> (raw)
In-Reply-To: <1405531594-25297-1-git-send-email-alexander.deucher@amd.com>

Am 16.07.2014 19:26, schrieb Alex Deucher:
> Now that fallback to gtt is fixed for cpu access, we can
> remove this limit.
>
> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

Reviewed-by: Christian König <christian.koenig@amd.com>

> ---
>   drivers/gpu/drm/radeon/radeon_gem.c | 7 +++++--
>   1 file changed, 5 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/radeon/radeon_gem.c b/drivers/gpu/drm/radeon/radeon_gem.c
> index fdd189b..07a13c9 100644
> --- a/drivers/gpu/drm/radeon/radeon_gem.c
> +++ b/drivers/gpu/drm/radeon/radeon_gem.c
> @@ -55,8 +55,11 @@ int radeon_gem_object_create(struct radeon_device *rdev, int size,
>   		alignment = PAGE_SIZE;
>   	}
>   
> -	/* maximun bo size is the minimun btw visible vram and gtt size */
> -	max_size = min(rdev->mc.visible_vram_size, rdev->mc.gtt_size);
> +	/* Maximum bo size is the gtt size since we use the gtt to handle
> +	 * vram to system pool migrations.  We could probably remove this
> +	 * check altogether with a little additional work.
> +	 */
> +	max_size = rdev->mc.gtt_size;
>   	if (size > max_size) {
>   		DRM_DEBUG("Allocation size %dMb bigger than %ldMb limit\n",
>   			  size >> 20, max_size >> 20);