From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 5 Jun 2001 12:03:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 5 Jun 2001 12:03:15 -0400 Received: from u-87-21.karlsruhe.ipdial.viaginterkom.de ([62.180.21.87]:42223 "EHLO dea.waldorf-gmbh.de") by vger.kernel.org with ESMTP id ; Tue, 5 Jun 2001 12:03:03 -0400 Date: Tue, 5 Jun 2001 17:10:48 +0200 From: Ralf Baechle To: Ingo Molnar Cc: Linus Torvalds , linux-kernel@vger.kernel.org Subject: Re: Missing cache flush. Message-ID: <20010605171048.A30818@bacchus.dhis.org> In-Reply-To: <9fhqlj$7jt$1@penguin.transmeta.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from mingo@elte.hu on Tue, Jun 05, 2001 at 10:29:28AM +0200 X-Accept-Language: de,en,fr Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 05, 2001 at 10:29:28AM +0200, Ingo Molnar wrote: > > - even when it works, it is necessarily very very very slow. Not to be > > used lightly. As you can imagine, the work-around is even slower. > > i've measured it once, IIRC it was around 10-15 millisecs on normal > pentiums, so while it's indeed the slowest x86 instruction on the planet, > it's still perhaps acceptable for hot-swapping ECC RAM. I can already hear the realtime crowd bitch ... Ralf