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Subject: Re: [Qemu-devel] Re: [PATCH][v2] Align file accesses with cache=off
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Cc: Blue Swirl <blauwirbel@gmail.com>, Laurent Vivier <Laurent.Vivier@bull.net>, Paul Brook <paul@codesourcery.com>

Anthony Liguori wrote:
>
> Actually, this is precisely what I'd like to do.  The key is to 
> mmap(MAP_PRIVATE) from the underling file directly into the guest's 
> memory.  Should be just as applicable to QEMU as KVM (although for KVM 
> we need mmu-notifiers first).
>

mmap()ing a page at a time will generate a horribly long vma list.  You 
need nonlinear mappings for this to be efficient.

-- 
error compiling committee.c: too many arguments to function