K 10
svn:author
V 5
markj
K 8
svn:date
V 27
2021-02-28T20:53:36.361637Z
K 7
svn:log
V 645
pmap: Fix largemap restart checks in the kernel_maps sysctl handler

The purpose of these checks is to ensure that the address of the
next-level page table page is valid, since nothing is synchronizing with
a concurrent update of the large map and large map PTPs are freed to the
system.  However, if PG_PS is set, there is no next level.

Reported by:	rpokala
Reviewed by:	kib
Tested by:	rpokala
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D28922

(cherry picked from commit aac25e222525780db8939d07a594d3e090c0a148)

Git Hash:   39e2c45679a58ba3a5eaed1ac63212c7dc54b0f3
Git Author: markj@FreeBSD.org
END