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VMware Member of Technical Staff Interview Question

"On a NUMA architecture, if there is a huge process say running on NUMA node 0 and it is migrated to NUMA node 1 and you want to copy the process address space from NUMA node 0 to NUMA node 1 local memory how would you do that?"
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Part of a Member of Technical Staff Interview Review - one of 415 VMware Interview Reviews

Answers & Comments

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The interesting thing was that while I will be copying the memory page by page we need to make sure that during copying the page is not modified locally. We can do this by changing the PTE R/W bit to read only while the page is being copied.
- Interview Candidate on Oct 31, 2013

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