Module Name: src
Committed By: ad
Date: Fri May 15 22:22:44 UTC 2020
Modified Files:
src/sys/arch/x86/x86: pmap.c
Log Message:
PTP pages are zeroed before free again.
To generate a diff of this commit:
cvs rdiff -u -r1.391 -r1.392 src/sys/arch/x86/x86/pmap.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/x86/x86/pmap.c
diff -u src/sys/arch/x86/x86/pmap.c:1.391 src/sys/arch/x86/x86/pmap.c:1.392
--- src/sys/arch/x86/x86/pmap.c:1.391 Fri May 15 22:22:06 2020
+++ src/sys/arch/x86/x86/pmap.c Fri May 15 22:22:44 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.391 2020/05/15 22:22:06 ad Exp $ */
+/* $NetBSD: pmap.c,v 1.392 2020/05/15 22:22:44 ad Exp $ */
/*
* Copyright (c) 2008, 2010, 2016, 2017, 2019, 2020 The NetBSD Foundation, Inc.
@@ -130,7 +130,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.391 2020/05/15 22:22:06 ad Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.392 2020/05/15 22:22:44 ad Exp $");
#include "opt_user_ldt.h"
#include "opt_lockdebug.h"
@@ -5433,10 +5433,7 @@ pmap_update(struct pmap *pmap)
uvm_pagerealloc(ptp, NULL, 0);
PMAP_DUMMY_UNLOCK(pmap);
- /*
- * XXX for PTPs freed by pmap_remove_ptes() but not
- * pmap_zap_ptp(), we could mark them PG_ZERO.
- */
+ ptp->flags |= PG_ZERO;
uvm_pagefree(ptp);
}
while ((pvp = LIST_FIRST(&pmap->pm_pvp_full)) != NULL) {
