[src/trunk]: src/sys/kern Allow a pool's pagesz to larger than the VM page size.

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

details:   https://anonhg.NetBSD.org/src/rev/de1545cbbc00
branches:  trunk
changeset: 486967:de1545cbbc00
user:      pk <pk%NetBSD.org@localhost>
date:      Wed May 31 15:29:42 2000 +0000

description:
Allow a pool's pagesz to larger than the VM page size.
Enforce the required page alignment restriction in pool_prime_page().

diffstat:

 sys/kern/subr_pool.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r c8b76adb7c8f -r de1545cbbc00 sys/kern/subr_pool.c
--- a/sys/kern/subr_pool.c      Wed May 31 15:27:33 2000 +0000
+++ b/sys/kern/subr_pool.c      Wed May 31 15:29:42 2000 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: subr_pool.c,v 1.35 2000/05/31 15:03:54 pk Exp $        */
+/*     $NetBSD: subr_pool.c,v 1.36 2000/05/31 15:29:42 pk Exp $        */
 
 /*-
  * Copyright (c) 1997, 1999 The NetBSD Foundation, Inc.
@@ -404,7 +404,7 @@
        /*
         * Check arguments and construct default values.
         */
-       if (!powerof2(pagesz) || pagesz > PAGE_SIZE)
+       if (!powerof2(pagesz))
                panic("pool_init: page size invalid (%lx)\n", (u_long)pagesz);
 
        if (alloc == NULL && release == NULL) {
@@ -1025,6 +1025,9 @@
        unsigned int ioff = pp->pr_itemoffset;
        int s, n;
 
+       if (((u_long)cp & (pp->pr_pagesz - 1)) != 0)
+               panic("pool_prime_page: %s: unaligned page", pp->pr_wchan);
+
        if ((pp->pr_roflags & PR_PHINPAGE) != 0) {
                ph = (struct pool_item_header *)(cp + pp->pr_phoffset);
        } else {