On Sun, Jul 11, 2021 at 11:09 PM Christoph Hellwig [off-list ref] wrote:
I think we should just remove it and eat the very minor overhead in
exec rather than confusing poor driver writers.
Ack.
I think architectures that have virtual caches might want to think
about this patch a bit more, but on the whole I can't argue against
the "it's badly documented and misused".
No sane architecture will care, since dcache will be coherent (there
are more issues on the I$ side, but that's a different issue)
Linus
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