From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <398CDA96.C3CBE4C@denise.shiny.it> Date: Sat, 05 Aug 2000 23:25:10 -0400 From: Giuliano Pochini MIME-Version: 1.0 To: Benjamin Herrenschmidt CC: linuxppc-dev@lists.linuxppc.org Subject: Re: progress on l2cr References: <39861753.8DB68BB6@denise.shiny.it> <20000731184228.18405@192.168.1.10> Content-Type: text/plain; charset=us-ascii Sender: owner-linuxppc-dev@lists.linuxppc.org List-Id: > >> >Is there any reason to keep the L2 cache data-only ? > >> > >> There are some rare cases where it can be useful, yes. Like when flushing > >> it, to avoid the flush code to pollute it. > > > >A few bytes inside a 1MB cache are't a problem IMHO. Anyway I enabled it and > >performance compiling programs is 15% lower. > > You have no reason to enable "data only" in normal use. It's used during > the flush cycle of the cache to avoid polluting it while the flush code > runs, but it's set and unset automatically, so you don't need to care. Ok, but /proc/.../l2cr tells it's data-only at boot. Bye. ** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/