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[src/trunk]: src/sys/arch/x86/x86 Fix braino in pmap_find_gnt(), really retur...
details: https://anonhg.NetBSD.org/src/rev/9636b4405092
branches: trunk
changeset: 943370:9636b4405092
user: bouyer <bouyer%NetBSD.org@localhost>
date: Tue Sep 01 11:24:14 2020 +0000
description:
Fix braino in pmap_find_gnt(), really return the gnt entry covering the range
and not one that starts just after.
Fixes a KASSERT in pmap_remove_gnt().
diffstat:
sys/arch/x86/x86/pmap.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diffs (27 lines):
diff -r 51c8caef831a -r 9636b4405092 sys/arch/x86/x86/pmap.c
--- a/sys/arch/x86/x86/pmap.c Tue Sep 01 08:22:36 2020 +0000
+++ b/sys/arch/x86/x86/pmap.c Tue Sep 01 11:24:14 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pmap.c,v 1.403 2020/08/04 06:23:46 skrll Exp $ */
+/* $NetBSD: pmap.c,v 1.404 2020/09/01 11:24:14 bouyer 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 1.403 2020/08/04 06:23:46 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.404 2020/09/01 11:24:14 bouyer Exp $");
#include "opt_user_ldt.h"
#include "opt_lockdebug.h"
@@ -5082,7 +5082,7 @@
headp = pmap->pm_data;
KASSERT(headp != NULL);
SLIST_FOREACH(pgnt, headp, pd_gnt_list) {
- if (pgnt->pd_gnt_sva >= sva && pgnt->pd_gnt_sva <= eva)
+ if (pgnt->pd_gnt_sva <= sva && eva <= pgnt->pd_gnt_eva)
return pgnt;
/* check that we're not overlapping part of a region */
KASSERT(pgnt->pd_gnt_sva >= eva || pgnt->pd_gnt_eva <= sva);
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