[src/trunk]: src/sys/arch/amd64/amd64 add MD part of SA/pthread pagefault han...

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

details:   https://anonhg.NetBSD.org/src/rev/14cc9fc89935
branches:  trunk
changeset: 552036:14cc9fc89935
user:      cl <cl%NetBSD.org@localhost>
date:      Tue Sep 16 15:49:06 2003 +0000

description:
add MD part of SA/pthread pagefault handling on amd64

diffstat:

 sys/arch/amd64/amd64/trap.c |  14 +++++++++++---
 1 files changed, 11 insertions(+), 3 deletions(-)

diffs (50 lines):

diff -r 97179b3434ae -r 14cc9fc89935 sys/arch/amd64/amd64/trap.c
--- a/sys/arch/amd64/amd64/trap.c       Tue Sep 16 15:28:45 2003 +0000
+++ b/sys/arch/amd64/amd64/trap.c       Tue Sep 16 15:49:06 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: trap.c,v 1.8 2003/08/20 21:48:49 fvdl Exp $    */
+/*     $NetBSD: trap.c,v 1.9 2003/09/16 15:49:06 cl Exp $      */
 
 /*-
  * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@@ -75,7 +75,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.8 2003/08/20 21:48:49 fvdl Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.9 2003/09/16 15:49:06 cl Exp $");
 
 #include "opt_ddb.h"
 #include "opt_kgdb.h"
@@ -395,6 +395,11 @@
 
                cr2 = rcr2();
                KERNEL_PROC_LOCK(l);
+               if (l->l_flag & L_SA) {
+                       KDASSERT(p != NULL && p->p_sa != NULL);
+                       p->p_sa->sa_vp_faultaddr = (vaddr_t)cr2;
+                       l->l_flag |= L_SA_PAGEFAULT;
+               }
 faultcommon:
                vm = p->p_vmspace;
                if (vm == NULL)
@@ -456,6 +461,7 @@
                                KERNEL_UNLOCK();
                                return;
                        }
+                       l->l_flag &= ~L_SA_PAGEFAULT;
                        KERNEL_PROC_UNLOCK(l);
                        goto out;
                }
@@ -488,8 +494,10 @@
                }
                if (type == T_PAGEFLT)
                        KERNEL_UNLOCK();
-               else
+               else {
+                       l->l_flag &= ~L_SA_PAGEFAULT;
                        KERNEL_PROC_UNLOCK(l);
+               }
                break;
        }