Re: [PATCH 1/1] arm64: fix flush_cache_range

[Russell King - ARM Linux]

On Wed, May 25, 2016 at 04:22:55PM +0100, Catalin Marinas wrote:
> That's when we realised that the CoW problem no longer exists for
> non-aliasing VIPT caches. However, the I-cache counterpart 6060e8df5178
> has not been reverted.

I think I mostly agree, except for reverting 6060e8df5178, which I don't
think would be correct.  That reintroduces the possibility of flushing
the I-cache twice in that path, once for aliasing vipt dcaches, and again
for asid tagged vivt icaches.  I'd rather have the code structured so we
only do this once.

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