[PATCH] drm/amdgpu: increase reserved VRAM size to 8MB

[Zhang, Hawking]

[AMD Public Use]

Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>

Regards,
Hawking
-----Original Message-----
From: Gao, Likun <Likun.Gao at amd.com> 
Sent: Wednesday, November 25, 2020 21:12
To: amd-gfx at lists.freedesktop.org
Cc: Zhang, Hawking <Hawking.Zhang at amd.com>; Gao, Likun <Likun.Gao at amd.com>
Subject: [PATCH] drm/amdgpu: increase reserved VRAM size to 8MB

From: Likun Gao <Likun.Gao at amd.com>

4MB reserved VRAM size which used for page tables was not enough for some condition, increase it to 8MB to reduce page table contention.

Signed-off-by: Likun Gao <Likun.Gao at amd.com>
Change-Id: Ibbc0c14a75bd0e57d77e30b7140a144f4030114a
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
index fa7d181934e5..1ed130d518a0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.h
@@ -104,7 +104,7 @@ struct amdgpu_bo_list_entry;
 #define AMDGPU_VM_FAULT_STOP_ALWAYS	2
 
 /* Reserve 4MB VRAM for page tables */
-#define AMDGPU_VM_RESERVED_VRAM		(4ULL << 20)
+#define AMDGPU_VM_RESERVED_VRAM		(8ULL << 20)
 
 /* max number of VMHUB */
 #define AMDGPU_MAX_VMHUBS			3
--
2.25.1