From fea456d82c19d201c21313864105876deabe148b Mon Sep 17 00:00:00 2001

From: Dave Airlie <airlied@redhat.com>

Date: Tue, 20 Oct 2020 08:22:53 +1000

Subject: [PATCH] drm/ttm: fix eviction valuable range check.

Mime-version: 1.0

Content-type: text/plain; charset=UTF-8

Content-transfer-encoding: 8bit

Git-commit: fea456d82c19d201c21313864105876deabe148b

Patch-mainline: v5.10-rc1

References: git-fixes

This was adding size to start, but pfn and start are in pages,

so it should be using num_pages.

Not sure this fixes anything in the real world, just noticed it

during refactoring.

Signed-off-by: Dave Airlie <airlied@redhat.com>

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

Cc: stable@vger.kernel.org

Link: https://patchwork.freedesktop.org/patch/msgid/20201019222257.1684769-2-airlied@gmail.com

Acked-by: Takashi Iwai <tiwai@suse.de>

---

 drivers/gpu/drm/ttm/ttm_bo.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c

index 70b3bee27850..eb4b7df02ca0 100644

--- a/drivers/gpu/drm/ttm/ttm_bo.c

+++ b/drivers/gpu/drm/ttm/ttm_bo.c

@@ -647,7 +647,7 @@ bool ttm_bo_eviction_valuable(struct ttm_buffer_object *bo,

 	/* Don't evict this BO if it's outside of the

 	 * requested placement range

 	 */

-	if (place->fpfn >= (bo->mem.start + bo->mem.size) ||

+	if (place->fpfn >= (bo->mem.start + bo->mem.num_pages) ||

 	    (place->lpfn && place->lpfn <= bo->mem.start))

 		return false;

-- 

2.16.4