drm/amdgpu: Remove unnecessary VM size calculations

This is now handled in amdgpu_vm_adjust_size.

Change-Id: I273e5901cec0517c56bf56e7dfd7b26a1bc1385f
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>

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

@@ -914,9 +914,6 @@ static void amdgpu_device_check_smu_prv_buffer_size(struct amdgpu_device *adev)
  */
 static void amdgpu_device_check_arguments(struct amdgpu_device *adev)
 {
-	struct sysinfo si;
-	int phys_ram_gb, amdgpu_vm_size_aligned;
-
 	if (amdgpu_sched_jobs < 4) {
 		dev_warn(adev->dev, "sched jobs (%d) must be at least 4\n",
 			 amdgpu_sched_jobs);
@@ -941,27 +938,6 @@ static void amdgpu_device_check_arguments(struct amdgpu_device *adev)
 		amdgpu_gtt_size = -1;
 	}
 
-	/* Compute the GPU VM space only if the user
-	 * hasn't changed it from the default.
-	 */
-	if (amdgpu_vm_size == -1) {
-		/* Computation depends on the amount of physical RAM available.
-		 * Cannot exceed 1TB.
-		 */
-		si_meminfo(&si);
-		phys_ram_gb = ((uint64_t)si.totalram * si.mem_unit) >> 30;
-		amdgpu_vm_size = min(phys_ram_gb * 3 + 16, 1024);
-
-		/* GPUVM sizes are almost never perfect powers of two.
-		 * Round up to nearest power of two starting from
-		 * the minimum allowed but aligned size of 32GB */
-		amdgpu_vm_size_aligned = 32;
-		while (amdgpu_vm_size > amdgpu_vm_size_aligned)
-			amdgpu_vm_size_aligned *= 2;
-
-		amdgpu_vm_size = amdgpu_vm_size_aligned;
-	}
-
 	/* valid range is between 4 and 9 inclusive */
 	if (amdgpu_vm_fragment_size != -1 &&
 	    (amdgpu_vm_fragment_size > 9 || amdgpu_vm_fragment_size < 4)) {