https://github.com/torvalds/linux
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Tip revision: d0e639c9e06d44e713170031fe05fb60ebe680af authored by Linus Torvalds on 06 October 2013, 21:00:20 UTC
Linux 3.12-rc4
Tip revision: d0e639c
shmparam.h
#ifndef _ASM_IA64_SHMPARAM_H
#define _ASM_IA64_SHMPARAM_H

/*
 * SHMLBA controls minimum alignment at which shared memory segments
 * get attached.  The IA-64 architecture says that there may be a
 * performance degradation when there are virtual aliases within 1MB.
 * To reduce the chance of this, we set SHMLBA to 1MB. --davidm 00/12/20
 */
#define	SHMLBA	(1024*1024)

#endif /* _ASM_IA64_SHMPARAM_H */
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