[src/trunk]: src/sys/uvm Wired kernel mappings are wired; pass VM_PROT_READ|V...

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

details:   https://anonhg.NetBSD.org/src/rev/304973e6f6b8
branches:  trunk
changeset: 473249:304973e6f6b8
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Wed May 26 19:27:49 1999 +0000

description:
Wired kernel mappings are wired; pass VM_PROT_READ|VM_PROT_WRITE for
access_type to pmap_enter() to ensure that when these mappings are accessed,
possibly in interrupt context, that they won't cause mod/ref emulation
page faults.

diffstat:

 sys/uvm/uvm_km.c |  8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diffs (32 lines):

diff -r eb132f32c1ac -r 304973e6f6b8 sys/uvm/uvm_km.c
--- a/sys/uvm/uvm_km.c  Wed May 26 19:23:13 1999 +0000
+++ b/sys/uvm/uvm_km.c  Wed May 26 19:27:49 1999 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uvm_km.c,v 1.25 1999/05/26 19:16:36 thorpej Exp $      */
+/*     $NetBSD: uvm_km.c,v 1.26 1999/05/26 19:27:49 thorpej Exp $      */
 
 /* 
  * Copyright (c) 1997 Charles D. Cranor and Washington University.
@@ -827,11 +827,11 @@
                            VM_PROT_ALL);
 #else
                        pmap_enter(map->pmap, loopva, VM_PAGE_TO_PHYS(pg),
-                           UVM_PROT_ALL, TRUE, 0);
+                           UVM_PROT_ALL, TRUE, VM_PROT_READ|VM_PROT_WRITE);
 #endif
                } else {
                        pmap_enter(map->pmap, loopva, VM_PAGE_TO_PHYS(pg),
-                           UVM_PROT_ALL, TRUE, 0);
+                           UVM_PROT_ALL, TRUE, VM_PROT_READ|VM_PROT_WRITE);
                }
                loopva += PAGE_SIZE;
                offset += PAGE_SIZE;
@@ -964,7 +964,7 @@
                 * object, so we always use regular old pmap_enter().
                 */
                pmap_enter(map->pmap, loopva, VM_PAGE_TO_PHYS(pg),
-                   UVM_PROT_ALL, TRUE, 0);
+                   UVM_PROT_ALL, TRUE, VM_PROT_READ|VM_PROT_WRITE);
 
                loopva += PAGE_SIZE;
                offset += PAGE_SIZE;