[PATCH] drm/amdgpu: one pde of 4 levels at least 512GB

[PATCH] drm/amdgpu: one pde of 4 levels at least 512GB

[Chunming Zhou]

Change-Id: I9d764e6e6cf214e64bd79435a8bbb4063260dc11
Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index c29a477..b7ec537 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -500,11 +500,11 @@ static int gmc_v9_0_vm_init(struct amdgpu_device *adev)
 	 * amdkfd will use VMIDs 8-15
 	 */
 	adev->vm_manager.num_ids = AMDGPU_NUM_OF_VMIDS;
-	/* Because of four level VMPTs, vm size at least is 256GB.
+	/* Because of four level VMPTs, vm size at least is 512GB.
 	256TB is OK as well */
-	if (amdgpu_vm_size < 256) {
-		DRM_WARN("vm size at least is 256GB!\n");
-		amdgpu_vm_size = 256;
+	if (amdgpu_vm_size < 512) {
+		DRM_WARN("vm size at least is 512GB!\n");
+		amdgpu_vm_size = 512;
 	}
 	adev->vm_manager.num_level = 3;
 	amdgpu_vm_manager_init(adev);
-- 
1.9.1

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Re: [PATCH] drm/amdgpu: one pde of 4 levels at least 512GB

[Zhang, Jerry (Junwei)]

On 03/28/2017 11:46 AM, Chunming Zhou wrote:
> Change-Id: I9d764e6e6cf214e64bd79435a8bbb4063260dc11
> Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>

For the minimum size, PD is 0

> ---
>   drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 8 ++++----
>   1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> index c29a477..b7ec537 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
> @@ -500,11 +500,11 @@ static int gmc_v9_0_vm_init(struct amdgpu_device *adev)
>   	 * amdkfd will use VMIDs 8-15
>   	 */
>   	adev->vm_manager.num_ids = AMDGPU_NUM_OF_VMIDS;
> -	/* Because of four level VMPTs, vm size at least is 256GB.
> +	/* Because of four level VMPTs, vm size at least is 512GB.
>   	256TB is OK as well */
> -	if (amdgpu_vm_size < 256) {
> -		DRM_WARN("vm size at least is 256GB!\n");
> -		amdgpu_vm_size = 256;
> +	if (amdgpu_vm_size < 512) {
> +		DRM_WARN("vm size at least is 512GB!\n");
> +		amdgpu_vm_size = 512;
>   	}
>   	adev->vm_manager.num_level = 3;
>   	amdgpu_vm_manager_init(adev);
>
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