From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: 3c59x Date: Tue, 10 Jun 2003 13:25:56 -0400 Sender: netdev-bounce@oss.sgi.com Message-ID: <20030610172556.GD1959@gtf.org> References: <20030610162342.GB1959@gtf.org> <20030610.100209.70199702.davem@redhat.com> <20030610171617.GC1959@gtf.org> <20030610.101452.35033262.davem@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: ak@suse.de, bogdan.costescu@iwr.uni-heidelberg.de, hadi@shell.cyberus.ca, ralph+d@istop.com, xerox@foonet.net, sim@netnation.com, fw@deneb.enyo.de, netdev@oss.sgi.com, linux-net@vger.kernel.org Return-path: To: "David S. Miller" Content-Disposition: inline In-Reply-To: <20030610.101452.35033262.davem@redhat.com> Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org On Tue, Jun 10, 2003 at 10:14:52AM -0700, David S. Miller wrote: > From: Jeff Garzik > Date: Tue, 10 Jun 2003 13:16:17 -0400 > > On Tue, Jun 10, 2003 at 10:02:09AM -0700, David S. Miller wrote: > > This means end users don't see the benefit, so I definitely > > prefer Andi's idea. > > Making every IO a conditional branch? Ug. > > A PIO costs hundreds if not thousands of instructions! > Come on Jeff, get real :-) MMIO isn't as bad as PIO, and the 'runtime choice' setup implies slowing down the MMIO path, too. Jeff