Commit 5d14fdab authored by David Yat Sin's avatar David Yat Sin Committed by Alex Deucher
Browse files

amdkfd: MTYPE_UC for ext-coherent system memory 



Set memory mtype to UC host memory when ext-coherent
flag is set and memory is registered as a SVM allocation.

Reviewed-by: default avatarAmber Lin <Amber.Lin@amd.com>
Signed-off-by: default avatarDavid Yat Sin <David.YatSin@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 61feed0b

drivers/gpu/drm/amd/amdkfd/kfd_svm.c

+1 −1
Original line number Diff line number Diff line
@@ -1278,7 +1278,7 @@ svm_range_get_pte_flags(struct kfd_node *node, 
				mapping_flags |= ext_coherent ? AMDGPU_VM_MTYPE_UC : AMDGPU_VM_MTYPE_NC;

		/* system memory accessed by the dGPU */

		} else {

			if (gc_ip_version < IP_VERSION(9, 5, 0))

			if (gc_ip_version < IP_VERSION(9, 5, 0) || ext_coherent)

				mapping_flags |= AMDGPU_VM_MTYPE_UC;

			else

				mapping_flags |= AMDGPU_VM_MTYPE_NC;