Messages in this thread | | | Date | Thu, 15 Jan 2015 11:08:28 -0500 | From | Austin S Hemmelgarn <> | Subject | Re: [LSF/MM TOPIC] userfaultfd |
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On 2015-01-14 18:01, Andrea Arcangeli wrote: > 7) distributed shared memory that could allow simultaneous mapping of > regions marked readonly and collapse them on the first exclusive > write. I'm mentioning it as a corollary, because I'm not aware of > anybody who is planning to use it that way (still I'd like that > this will be possible too just in case it finds its way later on). While I haven't actually written any code for it yet, I've been thinking about the possibility to use this to allow qemu to do distributed emulation of a NUMA system (ie, you could run qemu on a Beowulf cluster and make it look to the guest OS like it's running on a big NUMA system, essentially SSI clustering for people who don't have a multi-million dollar budget). Having userfaultd to work with would make this exponentially easier to implement.
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