From f25d716dac97193cf3d244ba170deb965ded3304 Mon Sep 17 00:00:00 2001
From: Monk Liu <Monk.Liu@amd.com>
Date: Wed, 4 Mar 2020 15:21:22 +0800
Subject: drm/amdgpu: don't try to reserve training bo for sriov (v2)
Git-commit: e862b08b4650be6d5196c191baceff3c43dfddef
Patch-mainline: v5.7-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
1) SRIOV guest KMD doesn't care training buffer
2) if we resered training buffer that will overlap with IP discovery
reservation because training buffer is at vram_size - 0x8000 and
IP discovery is at ()vram_size - 0x10000 => vram_size -1)
v2: squash in warning fix from Nirmoy
Signed-off-by: Monk Liu <Monk.Liu@amd.com>
Reviewed-by: Emily Deng <Emily.Deng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 393442c8f928..9f44ba7d9d97 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1840,9 +1840,11 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
*The reserved vram for memory training must be pinned to the specified
*place on the VRAM, so reserve it early.
*/
- r = amdgpu_ttm_training_reserve_vram_init(adev);
- if (r)
- return r;
+ if (!amdgpu_sriov_vf(adev)) {
+ r = amdgpu_ttm_training_reserve_vram_init(adev);
+ if (r)
+ return r;
+ }
/* allocate memory as required for VGA
* This is used for VGA emulation and pre-OS scanout buffers to
--
2.28.0