Module Name:	syssrc
Committed By:	nathanw
Date:		Thu Sep 26 19:45:56 UTC 2002

Modified Files:
	syssrc/sys/kern [nathanw_sa]: kern_sa.c

Log Message:
Permit sa_upcall() to be called with SA_UPCALL_DEFER masked in to the type
field. This signals that the user context should be acquired in
sa_upcall_userret() rather than immediately, which permits proper "stacking"
of multiple upcalls in one kernel entry. Synchronous upcalls should
not use this option (to avoid possible MP scheduling races); asynchronous
ones should.


To generate a diff of this commit:
cvs rdiff -r1.1.2.32 -r1.1.2.33 syssrc/sys/kern/kern_sa.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.