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    Subject[PATCH 5.9 349/391] drm/ttm: fix eviction valuable range check.
    Date
    From: Dave Airlie <airlied@redhat.com>

    commit fea456d82c19d201c21313864105876deabe148b upstream.

    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
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    drivers/gpu/drm/ttm/ttm_bo.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/drivers/gpu/drm/ttm/ttm_bo.c
    +++ b/drivers/gpu/drm/ttm/ttm_bo.c
    @@ -694,7 +694,7 @@ bool ttm_bo_eviction_valuable(struct ttm
    /* 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;


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