K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2020-10-03T23:11:20.798186Z
K 7
svn:log
V 343
Fix pmap_pti_add_kva() call for doublefault stack page.

After r354889 stack got struct nmi_pcpu at top, which makes IST top
not page-aligned.  Since pmap_pti_add_kva() truncates/rounds up
addresses, it erronously entered a page mapped before double fault
stack into the pti page table.

Sponsored by:	The FreeBSD Foundation
MFC after:	3 days

END