[src/trunk]: src/doc Myself and I think dsl@ looked into sysenter/sysexit in ...

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details:   https://anonhg.NetBSD.org/src/rev/44e79a31e022
branches:  trunk
changeset: 968668:44e79a31e022
user:      ad <ad%NetBSD.org@localhost>
date:      Fri Jan 24 09:33:42 2020 +0000

description:
Myself and I think dsl@ looked into sysenter/sysexit in 2007 and while it
was faster, it wasn't worth the trouble.

diffstat:

 doc/TODO |  6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diffs (20 lines):

diff -r 6f7400bcfc98 -r 44e79a31e022 doc/TODO
--- a/doc/TODO  Fri Jan 24 08:45:16 2020 +0000
+++ b/doc/TODO  Fri Jan 24 09:33:42 2020 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: TODO,v 1.19 2015/02/19 11:20:43 mrg Exp $
+#      $NetBSD: TODO,v 1.20 2020/01/24 09:33:42 ad Exp $
 
 THINGS TO BE DONE:
 
@@ -36,10 +36,6 @@
 User programs:
     rwall nfs-mountees on shutdown
 
-i386 kernel support:
-    make use of sysenter/sysexit instructions on PIII/4 and Athlon for
-        reducing syscall overhead.
-
 This is a list of suggested smaller projects (in no particular order):
 
 + speed up sort(1) by using mmap(2) rather than temp files