Sorry, something is still missing here. The new variable vram_base_offset isn't used anywhere. We have some other changes in amd-kfd-staging to use that vram_base_offset that are probably missing on amd-staging-drm-next. This change won't have any effect as is.
Regards,
Felix
-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Russell, Kent
Sent: Thursday, November 15, 2018 2:23 PM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Russell, Kent <Kent.Russell@xxxxxxx>; Liu, Shaoyun <Shaoyun.Liu@xxxxxxx>
Subject: [PATCH] drm/amdgpu : Use XGMI mapping when devices on the same hive v3
From: Shaoyun Liu <Shaoyun.Liu@xxxxxxx>
VM mapping will only fall back to P2P if XGMI mapping is not available
V2: Rebase onto 4.20
V3: Remove PCIe-related things
Change-Id: I7a854ab3d5c9958bd45d4fe439ea7e370a092e7a
Signed-off-by: Shaoyun Liu <Shaoyun.Liu@xxxxxxx>
Reviewed-by: Felix Kuehling <Felix.Kuehling@xxxxxxx>
Reviewed-by: Huang Rui <ray.huang@xxxxxxx>
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Kent Russell <kent.russell@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index dad0e23..5aa60bf 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -2011,6 +2011,8 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
struct drm_mm_node *nodes;
struct dma_fence *exclusive, **last_update;
uint64_t flags;
+ uint64_t vram_base_offset = adev->vm_manager.vram_base_offset;
+ struct amdgpu_device *bo_adev;
int r;
if (clear || !bo) {
@@ -2029,9 +2031,15 @@ int amdgpu_vm_bo_update(struct amdgpu_device *adev,
exclusive = reservation_object_get_excl(bo->tbo.resv);
}
- if (bo)
+ if (bo) {
flags = amdgpu_ttm_tt_pte_flags(adev, bo->tbo.ttm, mem);
- else
+ bo_adev = amdgpu_ttm_adev(bo->tbo.bdev);
+ if (adev->gmc.xgmi.hive_id &&
+ adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id)
+ vram_base_offset = bo_adev->vm_manager.vram_base_offset;
+ else
+ return -EINVAL;
+ } else
flags = 0x0;
if (clear || (bo && bo->tbo.resv == vm->root.base.bo->tbo.resv))
--
2.7.4
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