K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2018-07-05T16:43:15.807898Z
K 7
svn:log
V 605
Copyout(9) on 4/4 i386 needs correct vm_page_array[].

On the 4/4 i386, copyout(9) may need to call pmap_extract_and_hold()
on arbitrary userspace mapping.  If the mapping is backed by the
non-managed cdev pager or by the sg pager, on dense configs we might
access arbitrary element of vm_page_array[], in particular, not
corresponding to a page from the memory segment.  Initialize such pages
as fictitious with the corresponding physical address.

Reported by:	bde
Reviewed by:	alc, markj (previous version)
Sponsored by:	The FreeBSD Foundation
Differential revision:	https://reviews.freebsd.org/D16085

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