linux-kernel - [PATCH v1 20/20] drm/amdgpu: double AMDGPU_GTT_MAX_TRANSFER

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Message-ID: <20251104083605.13677-21-pierre-eric.pelloux-prayer@amd.com>
Date: Tue, 4 Nov 2025 09:35:35 +0100
From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>
To: Alex Deucher <alexander.deucher@....com>,
	Christian König <christian.koenig@....com>, David Airlie
	<airlied@...il.com>, Simona Vetter <simona@...ll.ch>
CC: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>,
	<amd-gfx@...ts.freedesktop.org>, <dri-devel@...ts.freedesktop.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH v1 20/20] drm/amdgpu: double AMDGPU_GTT_MAX_TRANSFER_SIZE

Makes copies/evictions faster when gart windows are required.

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@....com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index b685bf207e43..82276eff511d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -38,7 +38,7 @@
 #define AMDGPU_PL_MMIO_REMAP	(TTM_PL_PRIV + 5)
 #define __AMDGPU_PL_NUM	(TTM_PL_PRIV + 6)
 
-#define AMDGPU_GTT_MAX_TRANSFER_SIZE	512
+#define AMDGPU_GTT_MAX_TRANSFER_SIZE	1024
 
 extern const struct attribute_group amdgpu_vram_mgr_attr_group;
 extern const struct attribute_group amdgpu_gtt_mgr_attr_group;
-- 
2.43.0