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Commit 86209523 authored by Bas Nieuwenhuizen's avatar Bas Nieuwenhuizen Committed by Alex Deucher
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drm/amdgpu: Account for shadow PTs in mapping update IB size. 



When amdgpu_vm_frag_ptes calls amdgpu_vm_update_ptes and the pt
has a shadow PT we mirror all the write to the shadow PT too, which
results in twice the commands.

Signed-off-by: default avatarBas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: default avatarChristian König <christian.koenig@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 378e2d5b

drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c

+4 −2
Original line number Diff line number Diff line
@@ -1536,10 +1536,12 @@ static int amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev, 
	nptes = last - start + 1;



	/*

	 * reserve space for one command every (1 << BLOCK_SIZE)

	 * reserve space for two commands every (1 << BLOCK_SIZE)

	 *  entries or 2k dwords (whatever is smaller)

         *

         * The second command is for the shadow pagetables.

	 */

	ncmds = (nptes >> min(adev->vm_manager.block_size, 11u)) + 1;

	ncmds = ((nptes >> min(adev->vm_manager.block_size, 11u)) + 1) * 2;



	/* padding, etc. */

	ndw = 64;