https://bugzilla.kernel.org/show_bug.cgi?id=203837
--- Comment #2 from Paul Mackerras (pau...@ozlabs.org) ---
Just tried 5.1.7 in the host and got the guest locking up during boot. In xmon
I see one cpu in pmdp_invalidate and another in handle_mm_fault. It seems very
possible this is the bug that Nick Piggin's recent patch series fixes
("powerpc/64s: Fix THP PMD collapse serialisation"):
http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=112348
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