From 6cfba94a77c5cbad2d7c106ac5f026b6a8b1efe6 Mon Sep 17 00:00:00 2001
From: Philip Yang <Philip.Yang@amd.com>
Date: Tue, 7 Mar 2023 11:30:24 -0500
Subject: [PATCH] drm/amdgpu: dGPU mode set VRAM range lpfn as exclusive
TTM place lpfn is exclusive used as end (start + size) in drm and buddy
allocator, adev->gmc memory partition range lpfn is inclusive (start +
size - 1), should plus 1 to set TTM place lpfn.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 85ad355815fe..b2d11c4f39b0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -134,7 +134,11 @@ void amdgpu_bo_placement_from_domain(struct amdgpu_bo *abo, u32 domain)
if (adev->gmc.mem_partitions && abo->mem_id >= 0) {
places[c].fpfn = adev->gmc.mem_partitions[abo->mem_id].range.fpfn;
- places[c].lpfn = adev->gmc.mem_partitions[abo->mem_id].range.lpfn;
+ /*
+ * memory partition range lpfn is inclusive start + size - 1
+ * TTM place lpfn is exclusive start + size
+ */
+ places[c].lpfn = adev->gmc.mem_partitions[abo->mem_id].range.lpfn + 1;
} else {
places[c].fpfn = 0;
places[c].lpfn = 0;