>>> On 07.12.17 at 15:53, <marc.zyng...@arm.com> wrote:
> On 07/12/17 13:52, Julien Grall wrote:
> There is exactly one case where set/way makes sense, and that's when
> you're the only CPU left in the system, your MMU is off, and you're
> about to go down.

With this and ...

> On top of bypassing the coherency, S/W CMOs do not prevent lines from
> migrating from one CPU to another. So you could happily be flushing by
> S/W, and still end up with dirty lines in your cache. Success!

... this I wonder what value emulating those insns then has in the first
place. Can't you as well simply skip and ignore them, with the same
(bad) result?

Jan


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