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From dd5d6fc77fcae17b0c574db57e159284c4e5d4df Mon Sep 17 00:00:00 2001
From: Roger He <Hongbo.He@amd.com>
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 <christian.koenig@amd.com>
Signed-off-by: Roger He <Hongbo.He@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
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
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