On Thu, 5 Jan 2012 14:16:23 -0200, przanoni@xxxxxxxxx wrote: > From: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx> > > This ioctl is used to signal the drivers that the screen is rotated, > not to make the drivers rotate the screen. > - add a driver-specific "rotation_set" function > - implement Intel's rotation_set by setting the right values to the > PIPECONF registers. > > The idea is that when user-space does rotation, it can call this ioctl > to inform the Kernel that we have a rotation. This feature is needed > by the KVMr feature of VPro. So am I following this right, that these register bits are used to communicate from one piece of software to another piece of software, across the virtualization boundary?
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