[src/trunk]: src/sys/arch/powerpc/powerpc Do not copy l_md to the new lwp in ...

[martin <martin%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/33ebd0238763
branches:  trunk
changeset: 372533:33ebd0238763
user:      martin <martin%NetBSD.org@localhost>
date:      Mon Dec 05 16:01:03 2022 +0000

description:
Do not copy l_md to the new lwp in cpu_lwp_fork - as discussed on
tech-kern we do not want the child to inherit any of the flags in there.

diffstat:

 sys/arch/powerpc/powerpc/vm_machdep.c |  7 +++----
 1 files changed, 3 insertions(+), 4 deletions(-)

diffs (28 lines):

diff -r 7ac6e00338bc -r 33ebd0238763 sys/arch/powerpc/powerpc/vm_machdep.c
--- a/sys/arch/powerpc/powerpc/vm_machdep.c     Mon Dec 05 15:47:14 2022 +0000
+++ b/sys/arch/powerpc/powerpc/vm_machdep.c     Mon Dec 05 16:01:03 2022 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vm_machdep.c,v 1.104 2020/07/06 10:52:12 rin Exp $     */
+/*     $NetBSD: vm_machdep.c,v 1.105 2022/12/05 16:01:03 martin Exp $  */
 
 /*
  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.104 2020/07/06 10:52:12 rin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.105 2022/12/05 16:01:03 martin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_altivec.h"
@@ -95,8 +95,7 @@
        struct pcb * const pcb1 = lwp_getpcb(l1);
        struct pcb * const pcb2 = lwp_getpcb(l2);
 
-       /* Copy MD part of lwp and set up user trapframe pointer.  */
-       l2->l_md = l1->l_md;
+       /* Set up user trapframe pointer. */
        l2->l_md.md_utf = trapframe(l2);
 
        /* Copy PCB. */