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Subject[PATCH 0/5] [v3] fix illegal use of __pa() in KVM code
This series fixes a hard-to-debug early boot hang on 32-bit
NUMA systems. It adds coverage to the debugging code,
adds some helpers, and eventually fixes the original bug I
was hitting.

* Remove unnecessary initializations in slow_virt_to_phys(),
and convert 'level' to use the new enum pg_level.
* Add some text to slow_virt_to_phys() to make it clear
that we are not using it in any remotely fast paths.
* Moved DEBUG_VIRTUAL patch earlier in the series (it has no
dependencies on anything else and stands on its own.
* Created page_level_*() helpers to replace a nasty switch()
at hpa's suggestion

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