Does this change make sense? On Tue, Sep 20, 2016 at 01:02:20PM +0200, Christian König wrote: > Am 20.09.2016 um 12:41 schrieb Flora Cui: > >On Tue, Sep 20, 2016 at 06:19:33PM +0800, zhoucm1 wrote: > >> > >>On 2016年09月20日 17:09, Flora Cui wrote: > >>>Change-Id: I89e9be3d5c96d46655f3a977fb557b20b4d87609 > >>>Signed-off-by: Flora Cui <flora....@amd.com> > >>>--- > >>> drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 4 ++-- > >>> 1 file changed, 2 insertions(+), 2 deletions(-) > >>> > >>>diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c > >>>b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c > >>>index 262e872..b266cf7 100644 > >>>--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c > >>>+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c > >>>@@ -128,8 +128,8 @@ int amdgpu_gtt_mgr_alloc(struct ttm_mem_type_manager > >>>*man, > >>> if (!r) { > >>> mem->start = node->start; > >>>- tbo->offset = (tbo->mem.start << PAGE_SHIFT) + > >>>- tbo->bdev->man[tbo->mem.mem_type].gpu_offset; > >>>+ tbo->offset = (mem->start << PAGE_SHIFT) + > >>>+ tbo->bdev->man[mem->mem_type].gpu_offset; > >>mem->mem_type seems not set yet as well if I am correct. > >>IIRC, I feel it's better that tbo->offset is set out of this function after > >>get_node successfully. > >> > >how about change to tbo->bdev->man[TTM_PL_TT].gpu_offset? since > >gtt_mgr is for GTT only. > > Not 100% correct either. > > The problem is that sometimes a GTT MM node will be bound for a BO which is > still in VRAM (e.g. on eviction for example). > > So you need to check if (&tbo->mem == mem) and only then update the tbo's > offset. > > Regards, > Christian. > > > > >>Regards, > >>David Zhou > >> > >>> } > >>> return r; > >_______________________________________________ > >amd-gfx mailing list > >amd-gfx@lists.freedesktop.org > >https://lists.freedesktop.org/mailman/listinfo/amd-gfx > > > _______________________________________________ > amd-gfx mailing list > amd-gfx@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
>From 411f93d78e8f3691ce480146374c1e603c2c6db6 Mon Sep 17 00:00:00 2001 From: Flora Cui <flora....@amd.com> Date: Tue, 20 Sep 2016 17:07:31 +0800 Subject: [PATCH] drm/amdgpu: fix gtt_mgr bo's offset
Change-Id: I89e9be3d5c96d46655f3a977fb557b20b4d87609 Signed-off-by: Flora Cui <flora....@amd.com> Reviewed-by: Hawking Zhang <hawking.zh...@amd.com> --- drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c index 262e872..f86c844 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gtt_mgr.c @@ -128,8 +128,9 @@ int amdgpu_gtt_mgr_alloc(struct ttm_mem_type_manager *man, if (!r) { mem->start = node->start; - tbo->offset = (tbo->mem.start << PAGE_SHIFT) + - tbo->bdev->man[tbo->mem.mem_type].gpu_offset; + if (&tbo->mem == mem) + tbo->offset = (tbo->mem.start << PAGE_SHIFT) + + tbo->bdev->man[tbo->mem.mem_type].gpu_offset; } return r; -- 2.7.4
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