Commit b72ff190 authored by Felix Kuehling's avatar Felix Kuehling Committed by Alex Deucher
Browse files

drm/amdgpu: Raise KFD unpinned system memory limit 



Allow KFD applications to use more unpinned system memory through
HMM.

Signed-off-by: default avatarFelix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: default avatarYong Zhao <Yong.Zhao@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 79c4ac0d

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

+2 −2
Original line number Diff line number Diff line
@@ -85,7 +85,7 @@ static bool check_if_add_bo_to_vm(struct amdgpu_vm *avm, 
}



/* Set memory usage limits. Current, limits are

 *  System (TTM + userptr) memory - 3/4th System RAM

 *  System (TTM + userptr) memory - 15/16th System RAM

 *  TTM memory - 3/8th System RAM

 */

void amdgpu_amdkfd_gpuvm_init_mem_limits(void)
@@ -98,7 +98,7 @@ void amdgpu_amdkfd_gpuvm_init_mem_limits(void) 
	mem *= si.mem_unit;



	spin_lock_init(&kfd_mem_limit.mem_limit_lock);

	kfd_mem_limit.max_system_mem_limit = (mem >> 1) + (mem >> 2);

	kfd_mem_limit.max_system_mem_limit = mem - (mem >> 4);

	kfd_mem_limit.max_ttm_mem_limit = (mem >> 1) - (mem >> 3);

	pr_debug("Kernel memory limit %lluM, TTM limit %lluM\n",

		(kfd_mem_limit.max_system_mem_limit >> 20),

CRA Git | Maintained and supported by SUSTech CRA and CCSE