From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nick Piggin Subject: Re: [PATCH] Remove needless flush_dcache_page call Date: Fri, 16 Jan 2009 08:34:13 +0100 Message-ID: <20090116073413.GC22810@wotan.suse.de> References: <20090116052804.GA18737@barrios-desktop> <20090116053338.GC31013@parisc-linux.org> <20090116055119.GA6515@barrios-desktop> <20090116055927.GA22810@wotan.suse.de> <20090116060124.GG31013@parisc-linux.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-parisc@vger.kernel.org To: Matthew Wilcox Return-path: In-Reply-To: <20090116060124.GG31013@parisc-linux.org> List-ID: List-Id: linux-parisc.vger.kernel.org On Thu, Jan 15, 2009 at 11:01:24PM -0700, Matthew Wilcox wrote: > On Fri, Jan 16, 2009 at 06:59:27AM +0100, Nick Piggin wrote: > > But there are quite possibly holes around here because not as much testing > > is done on CPUs with these kinds of caches. Eg. brd probably should be > > doing a flush_dcache_page in the rw == WRITE direction AFAIKS, so it picks > > up user aliases here. > > Nick, if you wanted me to schlep a parisc machine to LCA for you, you > needed to ask me *before* I got as far as Vancouver ;-) ;) That actually might not be a bad idea if I had access to one of your crazy systems. Would it really fit on an aeroplane or would you need a shipping container? :)