On Thu 05-01-17 13:30:10, Khalid Aziz wrote:
[...]

It is very tempting to restrict tags to PAGE_SIZE granularity since it makes
code noticeably simpler and that is indeed going to be the majority of
cases. Sooner or later somebody would want to use multiple tags per page
though.

I didn't get to read the patch throughly yet but I am really confused by
this statement. The api is mprotect based which makes it ineherently
PAGE_SIZE granular. How do you want to achieve cache line granularity
with this API?

And I would really vote for simplicity first... Subpage granularity
sounds way too tricky...
-- 
Michal Hocko
SUSE Labs

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