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Re: [PATCH] MEMORY_BARRIER default

From: Ulrich Drepper <drepper at redhat dot com>
To: David Mosberger <davidm at hpl dot hp dot com>
Cc: Jakub Jelinek <jakub at redhat dot com>, hboehm at napali dot hpl dot hp dot com, Mark Brown <bmark at us dot ibm dot com>, Glibc hackers <libc-hacker at sources dot redhat dot com>
Date: 02 Apr 2002 14:30:00 -0800
Subject: Re: [PATCH] MEMORY_BARRIER default
References: <AE06E1AA-3C4A-11D6-98E8-0030657603C6@us.ibm.com><20020321204602.X32482@sunsite.ms.mff.cuni.cz><1016742904.5188.166.camel@myware.mynet><20020322092754.A32482@sunsite.ms.mff.cuni.cz> <15519.24920.656980.732584@napali.hpl.hp.com>

On Mon, 2002-03-25 at 09:41, David Mosberger wrote:

> It seems to me that on ia64, MEMORY_BARRIER should expand into:
> 
> 	asm volatile ("mf" ::: "memory")

Yes, and I've added an appropriate change.  I'm not entirely clear how
the mf.a form comes into play.  We have separate READ_MEMORY_BARRIER and
WRITE_MEMORY_BARRIER macros and mf.a might fit for one of them.

-- 
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