From: Martin Hicks <mort@wildopensource.com>
To: linux-ia64@vger.kernel.org
Subject: [Linux-ia64] [PATCH] Increase size of user stack
Date: Mon, 05 May 2003 18:18:52 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590723705637@msgid-missing> (raw)
Hello,
The current user stack size limit of 2GB is not big enough for large
SMP or SSI clusters. The following patch increases this size from
2GB to 512GB. The new size is negotiable, but right now SGI has
programs that require over 100GB of stack size on a 64 processor
machine. Setting the user stack size to 512GB seems like
a reasonable thing to do for future growth.
The patch is against 2.4.21-bk but it applies against 2.5 as well.
Comments?
mh
--
Wild Open Source Inc. mort@wildopensource.com
=== include/asm-ia64/a.out.h 1.4 vs edited ==--- 1.4/include/asm-ia64/a.out.h Thu Feb 28 06:57:29 2002
+++ edited/include/asm-ia64/a.out.h Mon May 5 16:39:03 2003
@@ -32,7 +32,7 @@
#ifdef __KERNEL__
# include <asm/page.h>
# define STACK_TOP (0x6000000000000000UL + (1UL << (4*PAGE_SHIFT - 12)) - PAGE_SIZE)
-# define IA64_RBS_BOT (STACK_TOP - 0x80000000L + PAGE_SIZE) /* bottom of reg. backing store */
+# define IA64_RBS_BOT (STACK_TOP - 0x8000000000UL + PAGE_SIZE) /* bottom of reg. backing store */
#endif
#endif /* _ASM_IA64_A_OUT_H */
next reply other threads:[~2003-05-05 18:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-05-05 18:18 Martin Hicks [this message]
2003-05-05 19:35 ` [Linux-ia64] [PATCH] Increase size of user stack Howell, David P
2003-05-05 19:42 ` Matthew Wilcox
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