[PATCH v2 3/4] drm/amdkfd: Move gfx9 MQD to VRAM domain

[Philip Yang <Philip.Yang@amd.com>]

To reduce queue switch latency further, move MQD to VRAM domain, add
AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS flag to allocate contiguous pages
using one buddy block.

Signed-off-by: Philip Yang <Philip.Yang@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c      | 3 ++-
 drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index 9cd1660b8f60..c11e37915365 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -329,7 +329,8 @@ int amdgpu_amdkfd_alloc_gtt_mem(struct amdgpu_device *adev, size_t size,
 	bp.size = size;
 	bp.byte_align = PAGE_SIZE;
 	bp.domain = domain;
-	bp.flags = AMDGPU_GEM_CREATE_CPU_GTT_USWC;
+	bp.flags = AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS |
+		   AMDGPU_GEM_CREATE_CPU_GTT_USWC;
 	bp.type = ttm_bo_type_kernel;
 	bp.resv = NULL;
 	bp.bo_ptr_size = sizeof(struct amdgpu_bo);
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
index a489d43d5f64..c6945c842267 100644
--- a/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_mqd_manager_v9.c
@@ -139,7 +139,7 @@ static struct kfd_mem_obj *allocate_mqd(struct kfd_node *node,
 			(ALIGN(q->ctl_stack_size, PAGE_SIZE) +
 			ALIGN(sizeof(struct v9_mqd), PAGE_SIZE)) *
 			NUM_XCC(node->xcc_mask),
-			AMDGPU_GEM_DOMAIN_GTT,
+			AMDGPU_GEM_DOMAIN_VRAM,
 			&(mqd_mem_obj->gtt_mem),
 			&(mqd_mem_obj->gpu_addr),
 			(void *)&(mqd_mem_obj->cpu_ptr), true);
-- 
2.50.1