On Mon, Apr 06, 2015 at 08:14:30PM +0200, Matthijs van Duin wrote: > * Ivaylo Dimitrov <ivo.g.dimitrov.75@xxxxxxxxx> [150406 10:15]: > > Why custom function, if IBE bit is zero, BTB invalidate instruction is a > > NOP. Do you think that "mcr p15, 0, r2, c7, c5, 6" executed as a NOP will > > put so much overhead, that it deserves a custom function? > > Executing them as nop is Cortex-A8 specific. On other ARMv7 CPUs, BTB > invalidation on context switch may be unnecessary yet expensive. That can be solved (see the patch I just posted) so I wouldn't worry too much about that issue. -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
