On Mon, 15 Apr 2013 14:46:19 -0700 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > Well, this is also a thing arch maintainers can do when they feel a > need to support the feature on their architecture. To support them at > that time we should provide them with a) adequate information in an > easy-to-find place (eg, a nice comment at the site of the reference x86 > implementation) and b) a userspace test app. and c) a CONFIG symbol (maybe CONFIG_HAVE_MEM_SOFT_DIRTY, maybe in arch/Kconfig) that they can select to get this feature (so that this feature then depend on that CONFIG symbol instead of X86). That way we don't have to go back and tidy this up when 15 or so architectures implement it. -- Cheers, Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
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