[src/trunk]: src/sys/arch/mips/mips Code style and add a comment

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

details:   https://anonhg.NetBSD.org/src/rev/cefbe66b601a
branches:  trunk
changeset: 823868:cefbe66b601a
user:      skrll <skrll%NetBSD.org@localhost>
date:      Fri May 12 06:43:42 2017 +0000

description:
Code style and add a comment

diffstat:

 sys/arch/mips/mips/pmap_machdep.c |  11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)

diffs (39 lines):

diff -r cb9aa03e6254 -r cefbe66b601a sys/arch/mips/mips/pmap_machdep.c
--- a/sys/arch/mips/mips/pmap_machdep.c Fri May 12 06:38:18 2017 +0000
+++ b/sys/arch/mips/mips/pmap_machdep.c Fri May 12 06:43:42 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap_machdep.c,v 1.14 2017/05/12 06:38:18 skrll Exp $  */
+/*     $NetBSD: pmap_machdep.c,v 1.15 2017/05/12 06:43:42 skrll Exp $  */
 
 /*-
  * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
@@ -67,7 +67,7 @@
 
 #include <sys/cdefs.h>
 
-__KERNEL_RCSID(0, "$NetBSD: pmap_machdep.c,v 1.14 2017/05/12 06:38:18 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap_machdep.c,v 1.15 2017/05/12 06:43:42 skrll Exp $");
 
 /*
  *     Manages physical address maps.
@@ -727,7 +727,10 @@
        struct vm_page_md * const mdpg = VM_PAGE_TO_MD(pg);
 
        KASSERT(VM_PAGEMD_CACHED_P(mdpg));
-       mdpg->mdpg_first.pv_va = va;
+       pv_entry_t pv = &mdpg->mdpg_first;
+
+       /* Note last mapped address for future color check */
+       pv->pv_va = va;
 #if 0
        if (MIPS_CACHE_VIRTUAL_ALIAS) {
                /*
@@ -735,7 +738,7 @@
                 */
                KASSERT((va & PAGE_MASK) == 0);
                mips_dcache_inv_range(va, PAGE_SIZE);
-               mdpg->mdpg_first.pv_va = va;
+               pv->pv_va = va;
        }
 #endif