Framebuffer compression is disabled when driver detects it's
running in a Intel GVT-g enlightened VM, because FBC is not
emulated and there is no stolen memory for a vGPU.
v2:
take Chris' comments:
- move the code into intel_update_fbc()
v4:
take Tvrtko's comments:
- rebase the code into intel_fbc_update()
Signed-off-by: Yu Zhang <yu.c.zhang@xxxxxxxxxxxxxxx>
Signed-off-by: Jike Song <jike.song@xxxxxxxxx>
Signed-off-by: Zhiyuan Lv <zhiyuan.lv@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_fbc.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_fbc.c b/drivers/gpu/drm/i915/intel_fbc.c
index 7341e87..ee65731 100644
--- a/drivers/gpu/drm/i915/intel_fbc.c
+++ b/drivers/gpu/drm/i915/intel_fbc.c
@@ -505,6 +505,10 @@ void intel_fbc_update(struct drm_device *dev)
if (!HAS_FBC(dev))
return;
+ /* disable framebuffer compression in vGPU */
+ if (intel_vgpu_active(dev))
+ i915.enable_fbc = 0;
+
if (i915.enable_fbc < 0) {
if (set_no_fbc_reason(dev_priv, FBC_CHIP_DEFAULT))
DRM_DEBUG_KMS("disabled per chip default\n");
--
1.9.1
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