[src/trunk]: src/sys/arch/i386/i386 db_write_text: make this work on xen.

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

details:   https://anonhg.NetBSD.org/src/rev/ac2724acb867
branches:  trunk
changeset: 579938:ac2724acb867
user:      yamt <yamt%NetBSD.org@localhost>
date:      Fri Apr 01 13:00:57 2005 +0000

description:
db_write_text: make this work on xen.

diffstat:

 sys/arch/i386/i386/db_memrw.c |  19 +++++++++++++++++--
 1 files changed, 17 insertions(+), 2 deletions(-)

diffs (64 lines):

diff -r d2830a8ff9aa -r ac2724acb867 sys/arch/i386/i386/db_memrw.c
--- a/sys/arch/i386/i386/db_memrw.c     Fri Apr 01 12:51:07 2005 +0000
+++ b/sys/arch/i386/i386/db_memrw.c     Fri Apr 01 13:00:57 2005 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: db_memrw.c,v 1.16 2004/02/13 11:36:13 wiz Exp $        */
+/*     $NetBSD: db_memrw.c,v 1.17 2005/04/01 13:00:57 yamt Exp $       */
 
 /*-
  * Copyright (c) 1996, 2000 The NetBSD Foundation, Inc.
@@ -56,7 +56,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: db_memrw.c,v 1.16 2004/02/13 11:36:13 wiz Exp $");
+__KERNEL_RCSID(0, "$NetBSD: db_memrw.c,v 1.17 2005/04/01 13:00:57 yamt Exp $");
 
 #include "opt_largepages.h"
 
@@ -67,6 +67,9 @@
 #include <uvm/uvm_extern.h>
 
 #include <machine/db_machdep.h>
+#if defined(XEN)
+#include <machine/xenpmap.h>
+#endif
 
 #include <ddb/db_access.h>
 
@@ -116,7 +119,11 @@
                 * Get the PTE for the page.
                 */
                pte = kvtopte(addr);
+#if defined(XEN)
+               oldpte = PTE_GET_MA(pte);
+#else
                oldpte = *pte;
+#endif
 
                if ((oldpte & PG_V) == 0) {
                        printf(" address %p not a valid page\n", dst);
@@ -149,7 +156,11 @@
                size -= limit;
 
                tmppte = (oldpte & ~PG_KR) | PG_KW;
+#if defined(XEN)
+               PTE_SET_MA(pte, (pt_entry_t *)vtomach((vaddr_t)pte), tmppte);
+#else
                *pte = tmppte;
+#endif
                pmap_update_pg(pgva);
                /*
                 * MULTIPROCESSOR: no shootdown required as the PTE continues to
@@ -166,7 +177,11 @@
                /*
                 * Restore the old PTE.
                 */
+#if defined(XEN)
+               PTE_SET_MA(pte, (pt_entry_t *)vtomach((vaddr_t)pte), oldpte);
+#else
                *pte = oldpte;
+#endif
 
 #if 0 
                /*