From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266769AbUG1C2F (ORCPT ); Tue, 27 Jul 2004 22:28:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266770AbUG1C2F (ORCPT ); Tue, 27 Jul 2004 22:28:05 -0400 Received: from mx1.redhat.com ([66.187.233.31]:38874 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S266769AbUG1C2C (ORCPT ); Tue, 27 Jul 2004 22:28:02 -0400 Date: Tue, 27 Jul 2004 19:24:54 -0700 From: "David S. Miller" To: William Lee Irwin III Cc: kaos@sgi.com, akpm@osdl.org, zwane@linuxpower.ca, ak@suse.de, linux-kernel@vger.kernel.org Subject: Re: [PATCH][2.6] Allow x86_64 to reenable interrupts on contention Message-Id: <20040727192454.787c6b62.davem@redhat.com> In-Reply-To: <20040728022131.GL2334@holomorphy.com> References: <20040728004030.GK2334@holomorphy.com> <2479.1090979285@kao2.melbourne.sgi.com> <20040728022131.GL2334@holomorphy.com> X-Mailer: Sylpheed version 0.9.12 (GTK+ 1.2.10; sparc-unknown-linux-gnu) X-Face: "_;p5u5aPsO,_Vsx"^v-pEq09'CU4&Dc1$fQExov$62l60cgCc%FnIwD=.UF^a>?5'9Kn[;433QFVV9M..2eN.@4ZWPGbdi<=?[:T>y?SD(R*-3It"Vj:)"dP Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 27 Jul 2004 19:21:31 -0700 William Lee Irwin III wrote: > and may also have issues with > architectures (e.g. sparc/sparc64) which need the interrupt disablement > in e.g. spin_lock_irqsave() to be done in the same call frame as the > spin_unlock_irqrestore() etc. This only was a problem on sparc, and it no longer exists at all in 2.6.x kernels. It was too much of a pain to keep teaching people that violated this, and it resulted in some contorted code as well. So don't worry about this at all in 2.6.x and later.