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drm/amdgpu: always flush the TLB on gfx8

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The TLB on GFX8 stores each block of 8 PTEs where any of the valid bits
are set.

Fixes: 5255e146c9 ("drm/amdgpu: rework TLB flushing")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2022-06-03 15:05:04 +02:00 committed by Alex Deucher
parent 1d2afeb798
commit 84205d0093
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View file

@ -793,6 +793,11 @@ int amdgpu_vm_update_range(struct amdgpu_device *adev, struct amdgpu_vm *vm,
flush_tlb |= adev->gmc.xgmi.num_physical_nodes &&
adev->ip_versions[GC_HWIP][0] == IP_VERSION(9, 4, 0);
/*
* On GFX8 and older any 8 PTE block with a valid bit set enters the TLB
*/
flush_tlb |= adev->ip_versions[GC_HWIP][0] < IP_VERSION(9, 0, 0);
memset(&params, 0, sizeof(params));
params.adev = adev;
params.vm = vm;