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. v2: take Chris' comments: - move the code into intel_update_fbc() 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_pm.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index daa99e7..50cf96b 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -544,6 +544,10 @@ void intel_update_fbc(struct drm_device *dev) return; } + /* disable framebuffer compression in vgt */ + if (intel_vgpu_active(dev)) + i915.enable_fbc = 0; + /* * If FBC is already on, we just have to verify that we can * keep it that way... -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
