Re: CP15 Barrier emulation performance?

2017-07-11 Thread Ian Campbell
On Tue, 2017-07-11 at 08:56 +0100, Edmund Grimley Evans wrote: > > Does this emulation take a considerable performance hit, as opposed > > to > > running on armhf hardware/kernel, where the instruction doesn't > > appear > > to be listed as deprecated? > > I'd expect the kernel-emulated instructio

Re: CP15 Barrier emulation performance?

2017-07-11 Thread Edmund Grimley Evans
> Does this emulation take a considerable performance hit, as opposed to > running on armhf hardware/kernel, where the instruction doesn't appear > to be listed as deprecated? I'd expect the kernel-emulated instruction to be much slower than any non-emulated instruction, but the overall effect on