Commit bd49234b authored Feb 10, 2015 by Yu Zhang Committed by Daniel Vetter Feb 13, 2015

drm/i915: Disable framebuffer compression for i915 driver in VM



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@linux.intel.com>
Signed-off-by: Jike Song <jike.song@intel.com>
Signed-off-by: Zhiyuan Lv <zhiyuan.lv@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

parent eb82289a

drivers/gpu/drm/i915/intel_fbc.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -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");