Fix for final ptdi panic on i386

diff --git a/sys/arch/i386/i386/pmap.c b/sys/arch/i386/i386/pmap.c
index cf4c571..3e7d0d0 100644 (file)
--- a/sys/arch/i386/i386/pmap.c
+++ b/sys/arch/i386/i386/pmap.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pmap.c,v 1.15 1996/10/25 11:14:13 deraadt Exp $       */
+/*     $OpenBSD: pmap.c,v 1.16 1997/01/07 05:37:32 tholo Exp $ */
 /*     $NetBSD: pmap.c,v 1.36 1996/05/03 19:42:22 christos Exp $       */
 
 /*
@@ -1726,6 +1726,23 @@ pmap_changebit(pa, setbits, maskbits)
        splx(s);
 }
 
+void
+pmap_prefault(map, v, l)
+       vm_map_t map;
+       vm_offset_t v;
+       vm_size_t l;
+{
+       vm_offset_t pv, pv2;
+
+       for (pv = v; pv < v + l ; pv += ~PD_MASK + 1) {
+               if (!pmap_pde_v(pmap_pde(map->pmap, pv))) {
+                       pv2 = trunc_page(vtopte(pv));
+                       vm_fault(map, pv2, VM_PROT_READ, FALSE);
+               }
+               pv &= PD_MASK;
+       }
+}
+
 #ifdef DEBUG
 void
 pmap_pvdump(pa)

diff --git a/sys/arch/i386/i386/pmap.old.c b/sys/arch/i386/i386/pmap.old.c
index 57ae1e1..0aa7a5d 100644 (file)
--- a/sys/arch/i386/i386/pmap.old.c
+++ b/sys/arch/i386/i386/pmap.old.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pmap.old.c,v 1.15 1996/10/25 11:14:13 deraadt Exp $   */
+/*     $OpenBSD: pmap.old.c,v 1.16 1997/01/07 05:37:32 tholo Exp $     */
 /*     $NetBSD: pmap.c,v 1.36 1996/05/03 19:42:22 christos Exp $       */
 
 /*
@@ -1726,6 +1726,23 @@ pmap_changebit(pa, setbits, maskbits)
        splx(s);
 }
 
+void
+pmap_prefault(map, v, l)
+       vm_map_t map;
+       vm_offset_t v;
+       vm_size_t l;
+{
+       vm_offset_t pv, pv2;
+
+       for (pv = v; pv < v + l ; pv += ~PD_MASK + 1) {
+               if (!pmap_pde_v(pmap_pde(map->pmap, pv))) {
+                       pv2 = trunc_page(vtopte(pv));
+                       vm_fault(map, pv2, VM_PROT_READ, FALSE);
+               }
+               pv &= PD_MASK;
+       }
+}
+
 #ifdef DEBUG
 void
 pmap_pvdump(pa)

diff --git a/sys/arch/i386/include/pmap.h b/sys/arch/i386/include/pmap.h
index 4d43e52..67415f5 100644 (file)
--- a/sys/arch/i386/include/pmap.h
+++ b/sys/arch/i386/include/pmap.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pmap.h,v 1.7 1996/10/25 11:14:16 deraadt Exp $        */
+/*     $OpenBSD: pmap.h,v 1.8 1997/01/07 05:37:34 tholo Exp $  */
 /*     $NetBSD: pmap.h,v 1.23 1996/05/03 19:26:30 christos Exp $       */
 
 /* 
@@ -86,6 +86,7 @@ extern int    PTDpaddr;       /* physical address of kernel PTD */
 void pmap_bootstrap __P((vm_offset_t start));
 boolean_t pmap_testbit __P((vm_offset_t, int));
 void pmap_changebit __P((vm_offset_t, int, int));
+void pmap_prefault __P((vm_map_t, vm_offset_t, vm_size_t));
 #endif
 
 /*

diff --git a/sys/arch/i386/include/pmap.old.h b/sys/arch/i386/include/pmap.old.h
index 3fbeaf5..bbe198f 100644 (file)
--- a/sys/arch/i386/include/pmap.old.h
+++ b/sys/arch/i386/include/pmap.old.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: pmap.old.h,v 1.7 1996/10/25 11:14:16 deraadt Exp $    */
+/*     $OpenBSD: pmap.old.h,v 1.8 1997/01/07 05:37:34 tholo Exp $      */
 /*     $NetBSD: pmap.h,v 1.23 1996/05/03 19:26:30 christos Exp $       */
 
 /* 
@@ -86,6 +86,7 @@ extern int    PTDpaddr;       /* physical address of kernel PTD */
 void pmap_bootstrap __P((vm_offset_t start));
 boolean_t pmap_testbit __P((vm_offset_t, int));
 void pmap_changebit __P((vm_offset_t, int, int));
+void pmap_prefault __P((vm_map_t, vm_offset_t, vm_size_t));
 #endif
 
 /*

diff --git a/sys/miscfs/procfs/procfs_mem.c b/sys/miscfs/procfs/procfs_mem.c
index 901f13c..dd443a9 100644 (file)
--- a/sys/miscfs/procfs/procfs_mem.c
+++ b/sys/miscfs/procfs/procfs_mem.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: procfs_mem.c,v 1.2 1996/02/27 08:03:36 niklas Exp $   */
+/*     $OpenBSD: procfs_mem.c,v 1.3 1997/01/07 05:37:35 tholo Exp $    */
 /*     $NetBSD: procfs_mem.c,v 1.8 1996/02/09 22:40:50 christos Exp $  */
 
 /*
@@ -149,7 +149,11 @@ procfs_rwmem(p, uio)
                 */
                if (!error)
                        vm_map_lookup_done(tmap, out_entry);
-  
+
+#ifdef __i386__
+               pmap_prefault(map, pageno, PAGE_SIZE);
+#endif
+
                /*
                 * Fault the page in...
                 */

diff --git a/sys/vm/vm_extern.h b/sys/vm/vm_extern.h
index cf93f18..14346cb 100644 (file)
--- a/sys/vm/vm_extern.h
+++ b/sys/vm/vm_extern.h
@@ -1,4 +1,4 @@
-/*     $OpenBSD: vm_extern.h,v 1.8 1996/08/02 00:05:58 niklas Exp $    */
+/*     $OpenBSD: vm_extern.h,v 1.9 1997/01/07 05:37:35 tholo Exp $     */
 /*     $NetBSD: vm_extern.h,v 1.20 1996/04/23 12:25:23 christos Exp $  */
 
 /*-
@@ -139,8 +139,8 @@ void                vmtotal __P((struct vmtotal *));
 void           vnode_pager_setsize __P((struct vnode *, u_long));
 void           vnode_pager_umount __P((struct mount *));
 boolean_t      vnode_pager_uncache __P((struct vnode *));
-void           vslock __P((caddr_t, u_int));
-void           vsunlock __P((caddr_t, u_int));
+int            vslock __P((caddr_t, u_int));
+int            vsunlock __P((caddr_t, u_int));
 
 /* Machine dependent portion */
 void           vmapbuf __P((struct buf *, vm_size_t));

diff --git a/sys/vm/vm_glue.c b/sys/vm/vm_glue.c
index 764435d..2851697 100644 (file)
--- a/sys/vm/vm_glue.c
+++ b/sys/vm/vm_glue.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: vm_glue.c,v 1.21 1996/11/23 23:19:54 kstailey Exp $    */
+/*     $OpenBSD: vm_glue.c,v 1.22 1997/01/07 05:37:36 tholo Exp $    */
 /*     $NetBSD: vm_glue.c,v 1.55.4.1 1996/06/13 17:25:45 cgd Exp $     */
 
 /* 
@@ -173,22 +173,25 @@ chgkprot(addr, len, rw)
 }
 #endif
 
-void
+int
 vslock(addr, len)
        caddr_t addr;
        u_int   len;
 {
-       vm_map_pageable(&curproc->p_vmspace->vm_map, trunc_page(addr),
-                       round_page(addr+len), FALSE);
+#ifdef __i386__
+       pmap_prefault(&curproc->p_vmspace->vm_map, (vm_offset_t)addr, len);
+#endif
+       return vm_map_pageable(&curproc->p_vmspace->vm_map, trunc_page(addr),
+                              round_page(addr+len), FALSE);
 }
 
-void
+int
 vsunlock(addr, len)
        caddr_t addr;
        u_int   len;
 {
-       vm_map_pageable(&curproc->p_vmspace->vm_map, trunc_page(addr),
-                       round_page(addr+len), TRUE);
+       return vm_map_pageable(&curproc->p_vmspace->vm_map, trunc_page(addr),
+                              round_page(addr+len), TRUE);
 }
 
 /*

diff --git a/sys/vm/vm_mmap.c b/sys/vm/vm_mmap.c
index 5008feb..0e614e8 100644 (file)
--- a/sys/vm/vm_mmap.c
+++ b/sys/vm/vm_mmap.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: vm_mmap.c,v 1.6 1996/04/21 22:33:13 deraadt Exp $     */
+/*     $OpenBSD: vm_mmap.c,v 1.7 1997/01/07 05:37:37 tholo Exp $       */
 /*     $NetBSD: vm_mmap.c,v 1.47 1996/03/16 23:15:23 christos Exp $    */
 
 /*
@@ -599,7 +599,7 @@ sys_mlock(p, v, retval)
                return (error);
 #endif
 
-       error = vm_map_pageable(&p->p_vmspace->vm_map, addr, addr+size, FALSE);
+       error = vslock((caddr_t)addr, size);
        return (error == KERN_SUCCESS ? 0 : ENOMEM);
 }
 
@@ -642,7 +642,7 @@ sys_munlock(p, v, retval)
                return (error);
 #endif
 
-       error = vm_map_pageable(&p->p_vmspace->vm_map, addr, addr+size, TRUE);
+       error = vsunlock((caddr_t)addr, size);
        return (error == KERN_SUCCESS ? 0 : ENOMEM);
 }