Use UMA_ZONE_NODUMP for the DMAR map entry zone
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Authored by markj on Feb 18 2018, 1:16 AM.

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kbowling

Details

Reviewers

kib

Commits

rS329521: Don't include DMAR map entry zone items in kernel dumps.

Summary

We may attempt to allocate from this zone while dumping to a device. I
noted that dmar_pgalloc() already uses the NODUMP flag, so it seemed
reasonable to extend this approach to the problem. If it is desirable to
retain the zone items in a dump, some more complicated solutions are
possible.

Test Plan

mmacy reported the problem and tested this change.