[src/trunk]: src/sys/arch/sparc64 Increase maximum MSGBUFSIZE to 248k.

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

details:   https://anonhg.NetBSD.org/src/rev/96267e59d97b
branches:  trunk
changeset: 330465:96267e59d97b
user:      jdc <jdc%NetBSD.org@localhost>
date:      Thu Jul 10 06:24:02 2014 +0000

description:
Increase maximum MSGBUFSIZE to 248k.
While here, remove 2 sparc(32)-only entries (from mrg@).

diffstat:

 sys/arch/sparc64/include/param.h |  17 +++++++++++------
 sys/arch/sparc64/sparc64/pmap.c  |   7 +++----
 2 files changed, 14 insertions(+), 10 deletions(-)

diffs (69 lines):

diff -r cdc40d23225e -r 96267e59d97b sys/arch/sparc64/include/param.h
--- a/sys/arch/sparc64/include/param.h  Thu Jul 10 06:02:40 2014 +0000
+++ b/sys/arch/sparc64/include/param.h  Thu Jul 10 06:24:02 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: param.h,v 1.53 2014/02/21 18:00:09 palle Exp $ */
+/*     $NetBSD: param.h,v 1.54 2014/07/10 06:24:02 jdc Exp $ */
 
 /*
  * Copyright (c) 1992, 1993
@@ -168,13 +168,12 @@
 
 #define        _MAXNBPG        8192    /* fixed VAs, independent of actual NBPG */
 
-#define        AUXREG_VA       (      KERNEND + _MAXNBPG) /* 1 page REDZONE */
-#define        TMPMAP_VA       (    AUXREG_VA + _MAXNBPG)
-#define        MSGBUF_VA       (    TMPMAP_VA + _MAXNBPG)
+#define        MSGBUF_VA       (      KERNEND + _MAXNBPG) /* 1 page REDZONE */
 /*
+ * Maximum message buffer size is 248k.
  * Here's the location of the interrupt stack and CPU structure.
  */
-#define        INTSTACK        (      KERNEND + 8*_MAXNBPG)
+#define        INTSTACK        (      KERNEND + 32*_MAXNBPG)
 #define        EINTSTACK       (     INTSTACK + 4*_MAXNBPG)
 #define        CPUINFO_VA      (    EINTSTACK              )
 #define        PANICSTACK      (     INTSTACK + 8*_MAXNBPG)
@@ -197,7 +196,13 @@
 
 #define        MCLBYTES        (1 << MCLSHIFT) /* size of a m_buf cluster */
 
-#define MSGBUFSIZE     NBPG
+#if !defined (MSGBUFSIZE)              /* options MSGBUFSIZE=integer   */
+#define MSGBUFSIZE     4 * NBPG
+#else
+#if INTSTACK - MSGBUF_VA - MSGBUFSIZE < 0
+#error MSGBUFSIZE is too large
+#endif
+#endif
 
 /*
  * Minimum size of the kernel kmem_arena in PAGE_SIZE-sized
diff -r cdc40d23225e -r 96267e59d97b sys/arch/sparc64/sparc64/pmap.c
--- a/sys/arch/sparc64/sparc64/pmap.c   Thu Jul 10 06:02:40 2014 +0000
+++ b/sys/arch/sparc64/sparc64/pmap.c   Thu Jul 10 06:24:02 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pmap.c,v 1.288 2014/06/05 19:47:24 palle Exp $ */
+/*     $NetBSD: pmap.c,v 1.289 2014/07/10 06:24:02 jdc Exp $   */
 /*
  *
  * Copyright (C) 1996-1999 Eduardo Horvath.
@@ -26,7 +26,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.288 2014/06/05 19:47:24 palle Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.289 2014/07/10 06:24:02 jdc Exp $");
 
 #undef NO_VCACHE /* Don't forget the locked TLB in dostart */
 #define        HWREF
@@ -742,8 +742,7 @@
         * Get hold or the message buffer.
         */
        msgbufp = (struct kern_msgbuf *)(vaddr_t)MSGBUF_VA;
-/* XXXXX -- increase msgbufsiz for uvmhist printing */
-       msgbufsiz = 4*PAGE_SIZE /* round_page(sizeof(struct msgbuf)) */;
+       msgbufsiz = MSGBUFSIZE;
        BDPRINTF(PDB_BOOT, ("Trying to allocate msgbuf at %lx, size %lx\n",
                            (long)msgbufp, (long)msgbufsiz));
        if ((long)msgbufp !=