K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2020-04-24T21:21:49.399987Z
K 7
svn:log
V 445
Fix a race in pmap_emulate_modified().

pmap_emulate_modify() was assuming that no changes to the pmap could
take place between the TLB signaling the fault and
pmap_emulate_modify()'s acquisition of the pmap lock, but that's clearly
not even true in the uniprocessor case, nevermind the SMP case.

Submitted by:	Nathaniel Filardo <nwf20@cl.cam.ac.uk>
Reviewed by:	kib
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D24523

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