* Toshi Kani <toshi.kani@xxxxxx> wrote: > This patch implements huge I/O mapping capability interfaces on x86. > +#ifdef CONFIG_HUGE_IOMAP > +#ifdef CONFIG_X86_64 > +#define IOREMAP_MAX_ORDER (PUD_SHIFT) > +#else > +#define IOREMAP_MAX_ORDER (PMD_SHIFT) > +#endif > +#endif /* CONFIG_HUGE_IOMAP */ > +#ifdef CONFIG_HUGE_IOMAP Hm, so why is there a Kconfig option for this? It just complicates things. For example the kernel already defaults to mapping itself with as large mappings as possible, without a Kconfig entry for it. There's no reason to make this configurable - and quite a bit of complexity in the patches comes from this configurability. Thanks, Ingo -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>