Wrong SHMLBA for MIPS

[Daniel Jacobowitz]

On Tue, Jul 15, 2003 at 04:37:48PM -0400, Daniel Jacobowitz wrote:
> A year ago, HJ posted a patch to create a <sys/shm.h> for MIPS.  It was
> applied and then reverted, and <bits/shm.h> got a definition of SHMLBA.  But
> it's not the right one...
> 
> The kernel says:
> #define SHMLBA 0x40000                  /* attach addr a multiple of this */
> 
> But the MIPS <bits/shm.h> says:
> /* Segment low boundary address multiple.  */
> #define SHMLBA          (__getpagesize ())
> extern int __getpagesize (void) __THROW __attribute__ ((__const__));
> 
> which works out to 4K on MIPS.  Am I missing something or should
> <bits/shm.h> be corrected?

More specifically, this.

2003-07-15  Daniel Jacobowitz  <drow@mvista.com>

	* sysdeps/unix/sysv/linux/mips/bits/shm.h (SHMLBA): Define to 256K.

--- glibc-2.3.2/sysdeps/unix/sysv/linux/mips/bits/shm.h.orig	2003-07-15 16:39:31.000000000 -0400
+++ glibc-2.3.2/sysdeps/unix/sysv/linux/mips/bits/shm.h	2003-07-15 16:40:00.000000000 -0400
@@ -36,7 +36,7 @@
 #define SHM_UNLOCK	12		/* unlock segment (root only) */
 
 /* Segment low boundary address multiple.  */
-#define SHMLBA		(__getpagesize ())
+#define SHMLBA		0x40000
 extern int __getpagesize (void) __THROW __attribute__ ((__const__));
 
 


-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer