Re: [PATCH 1/4] drm/amdgpu: don't try to reserve training bo for sriov

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Am 24.03.20 um 11:58 schrieb Monk Liu:
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)

Signed-off-by: Monk Liu <Monk.Liu@xxxxxxx>
---
  drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 7 ++++---
  1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 665db23..54cfa3a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1859,9 +1859,10 @@ 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;

Missing { } here, apart from that the series looks good to me.

Christian.

/* allocate memory as required for VGA
  	 * This is used for VGA emulation and pre-OS scanout buffers to

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