Re: remap_file_pages() use

[Paolo Bonzini]

Il 26/05/2014 15:24, Jeff Smith ha scritto:
> Your addr2 mmap() call is a bit incorrect semantically and
> syntactically (you skipped the length arg). The addr2 request will
> fail because mmap() does not implicitly munmap() occupied virtual
> address space.

With MAP_FIXED it does.  It is in the man page.

Paolo

> Even if you did that, the following still has a race
> condition between the addr2 request and another thread grabbing the
> same virtual space, which nothing short of a lock on all threads'
> mmap()-ing logic can protect:

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