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Subject[RFC][PATCH 0/8] Speculative pagefault -v3
Patch series implementing speculative page faults for x86.

Still needs lots of things sorted, like:

- call_srcu()
- ptl, irq and tlb-flush
- a 2nd VM_FAULT_LOCK? return code to distuinguish between
simple retry and must take mmap_sem semantics?


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