[AMD Official Use Only - General]
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-----Original Message-----
From: Zhang, Yifan <yifan1.zh...@amd.com>
Sent: Friday, August 25, 2023 8:34 AM
To: amd-gfx@lists.freedesktop.org
Cc: Deucher, Alexander <alexander.deuc...@amd.com>; Koenig, Christian
<christian.koe...@amd.com>; Zhang, Yifan <yifan1.zh...@amd.com>
Subject: [PATCH v3 2/2] drm/amdgpu: Put page tables to GTT memory for gfx10
onwards APUs
To decrease VRAM pressure for APUs, put page tables to GTT domain for gfx10 and
newer APUs.
v2: only enable it for gfx10 and newer APUs (Alex, Christian)
Signed-off-by: Yifan Zhang <yifan1.zh...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
index 96d601e209b8..4603d87c61a0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm_pt.c
@@ -515,10 +515,13 @@ int amdgpu_vm_pt_create(struct amdgpu_device *adev,
struct amdgpu_vm *vm,
bp.size = amdgpu_vm_pt_size(adev, level);
bp.byte_align = AMDGPU_GPU_PAGE_SIZE;
- if (!adev->gmc.is_app_apu)
- bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
- else
+ if (adev->gmc.is_app_apu ||
+ ((adev->flags & AMD_IS_APU) &&
+ (adev->ip_versions[GC_HWIP][0] >= IP_VERSION(10, 3, 3))))
bp.domain = AMDGPU_GEM_DOMAIN_GTT;
+ else
+ bp.domain = AMDGPU_GEM_DOMAIN_VRAM;
+
bp.domain = amdgpu_bo_get_preferred_domain(adev, bp.domain);
bp.flags = AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS |
--
2.37.3
