From: John Olender Date: Tue, 29 Apr 2025 11:24:28 +0000 (-0400) Subject: drm/amdgpu: amdgpu_vram_mgr_new(): Clamp lpfn to total vram X-Git-Tag: v6.16-rc1~33^2~6^2~14 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=4d2f6b4e4c7ed32e7fa39fcea37344a9eab99094;p=linux-2.6-block.git drm/amdgpu: amdgpu_vram_mgr_new(): Clamp lpfn to total vram The drm_mm allocator tolerated being passed end > mm->size, but the drm_buddy allocator does not. Restore the pre-buddy-allocator behavior of allowing such placements. Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3448 Signed-off-by: John Olender Reviewed-by: Alex Deucher Reviewed-by: Arunpravin Paneer Selvam Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c index 2d7f82e98df9..abdc52b0895a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c @@ -463,7 +463,7 @@ static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man, int r; lpfn = (u64)place->lpfn << PAGE_SHIFT; - if (!lpfn) + if (!lpfn || lpfn > man->size) lpfn = man->size; fpfn = (u64)place->fpfn << PAGE_SHIFT;