Re: [PATCH] drm/amdkfd: Fix byte align on VegaM

["Kuehling, Felix" <Felix.Kuehling@xxxxxxx>]

This was needed for VI chips before Fiji. I think that means Tonga, Topaz and Carrizo. As the list of supported ASICs keeps growing, we should change the condition to list only the chips that need the workaround, instead of adding every future chip to the list
 that don't.

Regards,
  Felix

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From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Russell, Kent <Kent.Russell@xxxxxxx>
Sent: Tuesday, July 23, 2019 11:18:52 AM
To: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
Subject: RE: [PATCH] drm/amdkfd: Fix byte align on VegaM

 

I’ll push this, I was just wondering if Felix could confirm if the TLB workaround was only for Tonga/Topaz, in which case we could check for that instead of having to expand the list in situations like this, to say “if FAMILY_VI && (TOPAZ || TONGA) then”. That way it’s explicitly applying the workaround to the affected ASICs instead of implicitly not-applying the workaround to unaffected ASICs.

 

Kent

 

From: Deucher, Alexander <Alexander.Deucher@xxxxxxx>
Sent: Tuesday, July 23, 2019 11:16 AM
To: Russell, Kent <Kent.Russell@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Subject: Re: [PATCH] drm/amdkfd: Fix byte align on VegaM

 

Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>

---

From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> on behalf of Russell, Kent <Kent.Russell@xxxxxxx>
Sent: Tuesday, July 23, 2019 10:22 AM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>
Cc: Russell, Kent <Kent.Russell@xxxxxxx>
Subject: [PATCH] drm/amdkfd: Fix byte align on VegaM

 

This was missed during the addition of VegaM support

Change-Id: I61c8fbbea77338126e3ebdfa74c286b665bdd670
Signed-off-by: Kent Russell <kent.russell@xxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
index f5ecf28eb37c..3179117ac434 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c
@@ -1139,7 +1139,8 @@ int amdgpu_amdkfd_gpuvm_alloc_memory_of_gpu(
                         adev->asic_type != CHIP_FIJI &&
                         adev->asic_type != CHIP_POLARIS10 &&
                         adev->asic_type != CHIP_POLARIS11 &&
-                       adev->asic_type != CHIP_POLARIS12) ?
+                       adev->asic_type != CHIP_POLARIS12 &&
+                       adev->asic_type != CHIP_VEGAM) ?
                         VI_BO_SIZE_ALIGN : 1;
 
         mapping_flags = AMDGPU_VM_PAGE_READABLE;
--
2.17.1

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