[src/trunk]: src/sys/arch/arm/arm32 Add a KASERT that we're not overwriting a...

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

details:   https://anonhg.NetBSD.org/src/rev/ae6e1efc3c52
branches:  trunk
changeset: 744771:ae6e1efc3c52
user:      skrll <skrll%NetBSD.org@localhost>
date:      Wed Feb 12 17:31:51 2020 +0000

description:
Add a KASERT that we're not overwriting anything in pmap_growkernel

diffstat:

 sys/arch/arm/arm32/pmap.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r 44efa666a72d -r ae6e1efc3c52 sys/arch/arm/arm32/pmap.c
--- a/sys/arch/arm/arm32/pmap.c Wed Feb 12 16:50:37 2020 +0000
+++ b/sys/arch/arm/arm32/pmap.c Wed Feb 12 17:31:51 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.c,v 1.389 2020/02/12 16:08:19 skrll Exp $ */
+/*     $NetBSD: pmap.c,v 1.390 2020/02/12 17:31:51 skrll Exp $ */
 
 /*
  * Copyright 2003 Wasabi Systems, Inc.
@@ -198,7 +198,7 @@
 #endif
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.389 2020/02/12 16:08:19 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.390 2020/02/12 17:31:51 skrll Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -5978,6 +5978,7 @@
                const pd_entry_t npde = L1_C_PROTO | l2b->l2b_pa
                    | L1_C_DOM(PMAP_DOMAIN_KERNEL);
 #ifdef ARM_MMU_EXTENDED
+               KASSERT(*pdep == 0);
                l1pte_setone(pdep, npde);
 #else
                /* Distribute new L1 entry to all other L1s */