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Acked-by: Alex Deucher <alexander.deucher@xxxxxxx> From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Christian König <ckoenig.leichtzumerken@xxxxxxxxx>
Sent: Thursday, November 29, 2018 11:20:12 AM To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx Cc: maraeo@xxxxxxxxx Subject: [PATCH] drm/ttm: fix LRU handling in ttm_buffer_object_transfer We need to set the NO_EVICT flag on the ghost object or otherwise we are
adding it to the LRU. When it is added to the LRU we can run into a race between destroying and evicting it again. Signed-off-by: Christian König <christian.koenig@xxxxxxx> --- drivers/gpu/drm/ttm/ttm_bo_util.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c index ba80150d1052..895d77d799e4 100644 --- a/drivers/gpu/drm/ttm/ttm_bo_util.c +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c @@ -492,8 +492,10 @@ static int ttm_buffer_object_transfer(struct ttm_buffer_object *bo, if (!fbo) return -ENOMEM; - ttm_bo_get(bo); fbo->base = *bo; + fbo->base.mem.placement |= TTM_PL_FLAG_NO_EVICT; + + ttm_bo_get(bo); fbo->bo = bo; /** -- 2.14.1 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx |
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