Hi, On Mon, Apr 06, 2015 at 07:23:13PM -0700, Tony Lindgren wrote: > I'm now thinking the kernel should just always set the 430973 specific > cpu_v7_switch_mm for all cortex-a8 if IBE bit is set. That avoids > the whole mess of early SoC detection and smc calls. And if IBE bit > is not set, then we just use the regular cpu_v7_switch_mm. > > This will work as long as we can read the aux ctrl register IBE > bit using mrc, which I believe is the case for all cortex-a8 based > omap variants. If I understood it correctly we can simply call the BTB flush on cortex-a8 if IBE bit is not set, since it would be translated as nop. So it should be safe to include the call on all cortex-a8 based cpus. We may need a non-BTB-flushing function for non-cortex-a8 based cpus, though. -- Sebastian
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