Re: [PATCH] drm/amdgpu remove restriction of sriov max_pfn on Vega10

[Christian König]

Am 18.10.23 um 04:39 schrieb Lin.Cao:

Remove restriction of sriov max_pfn so that TBA and TMA can move to high
47 bits address.

Regression test: change range alloc flag of libdrm as
AMDGPU_VA_RANGE_HIGH and there is no flr occur when testing amdgpu_test
of drm.

Signed-off-by: Lin.Cao <linca...@amd.com>

Acked-by: Christian König <christian.koe...@amd.com>

---
  drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 7 ++-----
  1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c 
b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index 3a1050344b59..b1eb81ca64bc 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -2023,11 +2023,8 @@ static int gmc_v9_0_sw_init(void *handle)
                 * vm size is 256TB (48bit), maximum size of Vega10,
                 * block size 512 (9bit)
                 */
-               /* sriov restrict max_pfn below AMDGPU_GMC_HOLE */
-               if (amdgpu_sriov_vf(adev))
-                       amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 47);
-               else
-                       amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 48);
+
+               amdgpu_vm_adjust_size(adev, 256 * 1024, 9, 3, 48);
                if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(9, 4, 2))
                        adev->gmc.translate_further = adev->vm_manager.num_level 
> 1;
                break;