x86 NMI-safe INT3 and Page Fault (v2)

[RFC PATCH] x86 NMI-safe INT3 and Page Fault (v2)
(CCing lkml) Implements an alternative iret with popf and return so trap and exception handlers can return to the NMI handler without issuing iret. i.
Linux | Kernel - http://www.gossamer-threads.com/lists/linux/kernel/

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