On 09/19/2014 04:07 PM, Chris Wilson wrote:
On Sat, Sep 20, 2014 at 02:47:04AM +0800, Jike Song wrote:
From: Yu Zhang <yu.c.zhang@xxxxxxxxx>
Framebuffer compression is disabled when driver detects it's
running in XenGT VM, because XenGT does not provide emulations
for FBC related operations, and we do not expose stolen memory
to the VM.
Signed-off-by: Yu Zhang <yu.c.zhang@xxxxxxxxx>
Signed-off-by: Jike Song <jike.song@xxxxxxxxx>
Signed-off-by: Zhiyuan Lv <zhiyuan.lv@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_dma.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index 927acea..bb4ad52 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1741,6 +1741,10 @@ int i915_driver_load(struct drm_device *dev, unsigned long flags)
i915_check_vgpu(dev);
+ /* disable framebuffer compression in vgt */
+ if (intel_vgpu_active(dev))
+ i915.enable_fbc = 0;
This should be done inside intel_enable_fbc() so that the correct reason
is given as to why it is disabled.
I'm sorry, but do you mean intel_update_fbc()?
-Chris
--
Thanks,
Jike
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