Re: [PATCH] libibverbs: Add huge page support to ibv_madvise_range()

[Alex Vainman <alexonlists-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

> Changing which API?  

Verbs API.
Since there is no way to figure out (as we know) from user space 
if a given memory region is backed by a huge page or default one,
we can allow the user to supply us this info on memory registration.
For that we need to add version of ibv_reg_mr() with additional 
input parameter for page size (the same for ibv_dontfork_range()
and ibv_dofork_range()).

> Changing the kernel is a possibility of course.

In my opinion if we have the user space solution it is preferable
than changing the kernel, which is more complex path.

Alex.

Roland Dreier Wrote:
>  > But we couldn't find another one without changing the API or changing
>  > the kernel.
> 
> Changing which API?  Changing the kernel is a possibility of course.
> 
>  - R.
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