commit 9d54504c7d60aeef0874295e5bcc24be8d62e81e
Author: Ryota Ozaki <ozaki-r@iij.ad.jp>
Date:   Fri Jan 26 17:44:32 2018 +0900

    Update xcall.9

diff --git a/share/man/man9/xcall.9 b/share/man/man9/xcall.9
index b8b4347d5e5..436098b51c8 100644
--- a/share/man/man9/xcall.9
+++ b/share/man/man9/xcall.9
@@ -87,7 +87,6 @@ also provides a mechanism for making
 .Dq "high priority"
 cross calls.
 The function to be executed runs on the remote CPU within a
-.Dv IPL_SOFTSERIAL
 software interrupt context, possibly interrupting other lower-priority
 code running on the CPU.
 .Sh NOTES
@@ -112,7 +111,18 @@ on for the cross-call to complete.
 .Fa flags
 should be
 .Dv XC_HIGHPRI
+or
+.Fo XC_HIGHPRI_IPL
+.Fa ipl
+.Fc
 for a "high priority" call, and 0 for a "low priority" call.
+.Dv XC_HIGHPRI
+uses an
+.Dv IPL_SOFTSERIAL
+software interrupt while
+.Fn XC_HIGHPRI_IPL
+uses a software interrupt with an IPL specified by
+.Fa ipl .
 .Fn xc_broadcast
 should not be called from interrupt context.
 .It Fn xc_unicast "flags" "func" "arg1" "arg2" "ci"