[src/trunk]: src/sys/arch/powerpc/booke Fix pmap_procwr() for powerpc/booke:

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

details:   https://anonhg.NetBSD.org/src/rev/5bfb0cac9ae3
branches:  trunk
changeset: 949231:5bfb0cac9ae3
user:      rin <rin%NetBSD.org@localhost>
date:      Wed Jan 06 07:56:19 2021 +0000

description:
Fix pmap_procwr() for powerpc/booke:

- Use PAGE_MASK, not PAGE_SIZE, to calculate page offset.
- Do not drop page offset of target address.

diffstat:

 sys/arch/powerpc/booke/booke_pmap.c |  10 +++++-----
 1 files changed, 5 insertions(+), 5 deletions(-)

diffs (38 lines):

diff -r 08bbf805fc4b -r 5bfb0cac9ae3 sys/arch/powerpc/booke/booke_pmap.c
--- a/sys/arch/powerpc/booke/booke_pmap.c       Wed Jan 06 04:43:14 2021 +0000
+++ b/sys/arch/powerpc/booke/booke_pmap.c       Wed Jan 06 07:56:19 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: booke_pmap.c,v 1.30 2020/12/20 16:38:25 skrll Exp $    */
+/*     $NetBSD: booke_pmap.c,v 1.31 2021/01/06 07:56:19 rin Exp $      */
 /*-
  * Copyright (c) 2010, 2011 The NetBSD Foundation, Inc.
  * All rights reserved.
@@ -37,7 +37,7 @@
 #define __PMAP_PRIVATE
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: booke_pmap.c,v 1.30 2020/12/20 16:38:25 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: booke_pmap.c,v 1.31 2021/01/06 07:56:19 rin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_multiprocessor.h"
@@ -62,7 +62,7 @@
 pmap_procwr(struct proc *p, vaddr_t va, size_t len)
 {
        struct pmap * const pmap = p->p_vmspace->vm_map.pmap;
-       vsize_t off = va & PAGE_SIZE;
+       vsize_t off = va & PAGE_MASK;
 
        kpreempt_disable();
        for (const vaddr_t eva = va + len; va < eva; off = 0) {
@@ -78,8 +78,8 @@
                        continue;
                }
                kpreempt_enable();
-               dcache_wb(pte_to_paddr(pt_entry), segeva - va);
-               icache_inv(pte_to_paddr(pt_entry), segeva - va);
+               dcache_wb(pte_to_paddr(pt_entry) + off, segeva - va);
+               icache_inv(pte_to_paddr(pt_entry) + off, segeva - va);
                kpreempt_disable();
                va = segeva;
        }