Instead of defining all cache flush operations with an assembly macro in proc-macros.S, provide an explicit struct cpu_cache_fns for each CPU cache type in mm/cache.c. As a side effect from rewriting the vtables in C, we can avoid the aliasing for the "louis" cache callback, instead we can just assign the NN_flush_kern_cache_all() function to the louis callback in the C vtable. As the louis cache callback is called explicitly (not through the vtable) if we only have one type of cache support compiled in, we need an ifdef quirk for this in the !MULTI_CACHE case. Feroceon and XScale have some dma mapping quirk, in this case we can just define two structs and assign all but one callback to the main implementation; since each of them invoked define_cache_functions twice they require MULTI_CACHE by definition so the compiled-in shortcut is not used on these variants. Tested-by: Kees Cook <keescook@chromium.org> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>