linux-kernel - [PATCH 1/5] ia64: limit stack size for the ski emulator

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Date:	Thu, 23 Jan 2014 20:52:51 -0500 (EST)
From:	Mikulas Patocka <mpatocka@...hat.com>
To:	Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>
cc:	linux-ia64@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/5] ia64: limit stack size for the ski emulator

The ski emulator can't spawn any process with larger stack than
0x7ffff00000000.

Signed-off-by: Mikulas Patocka <mpatocka@...hat.com>

---
 arch/ia64/include/asm/resource.h |    6 ++++++
 1 file changed, 6 insertions(+)

Index: linux-2.6-ia64/arch/ia64/include/asm/resource.h
===================================================================
--- linux-2.6-ia64.orig/arch/ia64/include/uapi/asm/resource.h	2013-04-20 19:14:30.000000000 +0200
+++ linux-2.6-ia64/arch/ia64/include/uapi/asm/resource.h	2013-04-20 20:59:00.000000000 +0200
@@ -2,6 +2,12 @@
 #define _ASM_IA64_RESOURCE_H
 
 #include <asm/ustack.h>
+
+#if defined(__KERNEL__) && defined(CONFIG_IA64_HP_SIM)
+/* The ski simulator can't spawn any process with larger stack size */
+#define _STK_LIM_MAX	0x7ffff00000000UL
+#endif
+
 #include <asm-generic/resource.h>
 
 #endif /* _ASM_IA64_RESOURCE_H */

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