From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bilbo.ozlabs.org (bilbo.ozlabs.org [203.10.76.25]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "bilbo.ozlabs.org", Issuer "CAcert Class 3 Root" (verified OK)) by ozlabs.org (Postfix) with ESMTPS id 4CBB0DDF01 for ; Tue, 24 Mar 2009 17:01:05 +1100 (EST) From: Jeremy Kerr To: michael@ellerman.id.au Subject: Re: [PATCH] powerpc: Add write barrier before enabling DTL flags Date: Tue, 24 Mar 2009 16:59:54 +1100 References: <1237863308.620048.912148989400.1.gpush@pingu> <1237874006.6478.284.camel@localhost> In-Reply-To: <1237874006.6478.284.camel@localhost> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Message-Id: <200903241659.55302.jk@ozlabs.org> Cc: linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Michael, > Wouldn't this still be a problem on a UP kernel? I don't believe so - stores should be ordered with respect to the current CPU, and in the UP case we still get a barrier(). However, perhaps there are other considerations with the HV that I'm not aware of. Anyone? Cheers, Jeremy