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[src/trunk]: src/sys/arch/aarch64/aarch64 Improve a comment
details: https://anonhg.NetBSD.org/src/rev/9d6238181cf8
branches: trunk
changeset: 974804:9d6238181cf8
user: skrll <skrll%NetBSD.org@localhost>
date: Tue Aug 11 19:46:56 2020 +0000
description:
Improve a comment
diffstat:
sys/arch/aarch64/aarch64/db_interface.c | 13 +++++++------
1 files changed, 7 insertions(+), 6 deletions(-)
diffs (34 lines):
diff -r 38a387c882e4 -r 9d6238181cf8 sys/arch/aarch64/aarch64/db_interface.c
--- a/sys/arch/aarch64/aarch64/db_interface.c Tue Aug 11 18:52:03 2020 +0000
+++ b/sys/arch/aarch64/aarch64/db_interface.c Tue Aug 11 19:46:56 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: db_interface.c,v 1.8 2020/08/02 06:58:16 maxv Exp $ */
+/* $NetBSD: db_interface.c,v 1.9 2020/08/11 19:46:56 skrll Exp $ */
/*
* Copyright (c) 2017 Ryo Shimizu <ryo%nerv.org@localhost>
@@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: db_interface.c,v 1.8 2020/08/02 06:58:16 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: db_interface.c,v 1.9 2020/08/11 19:46:56 skrll Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -121,10 +121,11 @@
pte = *ptep;
/*
- * change to writable. require to keep execute permission.
- * because if the block/page to which the target address belongs and
- * the block/page to which this function itself belongs are the same,
- * if drop PROT_EXECUTE and TLB invalidate, the program stop...
+ * change to writable. it is required to keep execute permission.
+ * because if the block/page to which the target address belongs is
+ * the same as the block/page to which this function belongs, then
+ * if PROT_EXECUTE is dropped and TLB is invalidated, the program
+ * will stop...
*/
pmap_kvattr(addr, VM_PROT_EXECUTE|VM_PROT_READ|VM_PROT_WRITE);
aarch64_tlbi_all();
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