K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2019-12-06T19:20:45.562472Z
K 7
svn:log
V 401
Remove SPARE_USRSPACE.

This constant was used to reserve space at the top of the stack to
hold translated system call arguments for non-default ABIs (the
"stackgap").  However, none of the compatibility ABIs have used the
stackgap in many years and the last use of SPARE_USRSPACE was removed
in r355373.

Reviewed by:	kib
Sponsored by:	DARPA
Differential Revision:	https://reviews.freebsd.org/D22697

END