From dd5d6fc77fcae17b0c574db57e159284c4e5d4df Mon Sep 17 00:00:00 2001 From: Roger He Date: Fri, 10 Nov 2017 19:05:13 +0800 Subject: [PATCH 2800/4131] drm/amd/amdgpu: not allow gtt size exceed 75%*system memory size MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit keep consistency with threshold of swapout Change-Id: I3348581d8d33a87b71888b688d98db02561bfa45 Reviewed-by: Christian König Signed-off-by: Roger He Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index a05451a..c5bbbbe 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -1568,10 +1568,11 @@ int amdgpu_ttm_init(struct amdgpu_device *adev) struct sysinfo si; si_meminfo(&si); - gtt_size = max3((AMDGPU_DEFAULT_GTT_SIZE_MB << 20), - adev->mc.mc_vram_size, - ((uint64_t)si.totalram * si.mem_unit)); - } else + gtt_size = min(max((AMDGPU_DEFAULT_GTT_SIZE_MB << 20), + adev->mc.mc_vram_size), + ((uint64_t)si.totalram * si.mem_unit * 3/4)); + } + else gtt_size = (uint64_t)amdgpu_gtt_size << 20; /* reserve for DGMA import domain */ -- 2.7.4