Am 29.03.2017 um 10:08 schrieb Junwei Zhang:
> Signed-off-by: Junwei Zhang <Jerry.Zhang at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index 1ad1113..4af4ea0 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -1080,6 +1080,11 @@ static void amdgpu_get_block_size(struct amdgpu_device *adev)
>
> static void amdgpu_check_vm_size(struct amdgpu_device *adev)
> {
> + if (adev->asic_type >= CHIP_VEGA10) {
> + amdgpu_vm_size = 1U << 18; /* 256TB */
> + return;
> + }
> +
NAK, that would break in a mixed environment with APU+Vega10.
Instead just go into gmc_v9_0_sw_init() and set max_pfn = 1ULL << 36 and
add a comment there why we hardcode this value for Vega10 and later.
Christian.
> if (!amdgpu_check_pot_argument(amdgpu_vm_size)) {
> dev_warn(adev->dev, "VM size (%d) must be a power of 2\n",
> amdgpu_vm_size);
