From mboxrd@z Thu Jan  1 00:00:00 1970
From: Zoltan Menyhart <Zoltan.Menyhart@bull.net>
Date: Fri, 10 Mar 2006 10:40:18 +0000
Subject: Re: Fix race in the accessed/dirty bit handlers
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References: <Pine.LNX.4.64.0603071901420.2463@schroedinger.engr.sgi.com>
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To: linux-ia64@vger.kernel.org

Christian Hildner wrote:
> Zoltan Menyhart schrieb:
> 
>> The only instruction I know of to synchronize with the "itc" mechanism is
>> the "srlz" instruction. 
> 
> 
> rfi implies srlz.i (and srlz.d) as well.

You are right as far as the user mode code is concerned.

Yet, we have not got any "rfi" in our

    insert TLB
    ;;
    re-read

sequence. Only a "srlz" can help.:

	itc.d	r25
	;;
	srlz.d
	ld8	r18 = [r17]

Thanks,

Zoltan