On Mon, 31 Mar 2025 at 17:38, Linus Torvalds
<[email protected]> wrote:
>
> So *this* is the kind of "bad in a different way" I could imagine:
> things that probably should be cleaned up and be available to generic
> code, but very few people have cared, and so they are used in ad-hoc
> places and haven't been sufficiently generalized and cleaned up.
Of course, the good news is that (a) few people care - which is why we
are in this situation - and (b) the people who *do* care about these
issues tend to be both responsible and responsive.
So not some unfixable morass, more of a "one or two architectures may
care, and we might have to extend interfaces that haven't been used
this way before".
For example, just adding flush_dcache_range() into
include/asm-generic/cacheflush.h should be more-or-less trivial, with
the same kinds of "architectures can make clear they have their own
optimized version".
Linus
