Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sat, 21 Jul 2001 20:02:41 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sat, 21 Jul 2001 20:02:31 -0400 Received: from [64.81.246.98] ([64.81.246.98]:33674 "EHLO are.twiddle.net") by vger.kernel.org with ESMTP id ; Sat, 21 Jul 2001 20:02:24 -0400 Date: Sat, 21 Jul 2001 17:00:18 -0700 From: Richard Henderson To: Linus Torvalds Cc: kai@tp1.ruhr-uni-bochum.de, linux-kernel@vger.kernel.org, Julian Anastasov Subject: Re: cpuid_eax damages registers (2.4.7pre7) Message-ID: <20010721170018.C3676@twiddle.net> Mail-Followup-To: Linus Torvalds , kai@tp1.ruhr-uni-bochum.de, linux-kernel@vger.kernel.org, Julian Anastasov In-Reply-To:

<200107182204.f6IM4K001282@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: <200107182204.f6IM4K001282@penguin.transmeta.com>; from torvalds@transmeta.com on Wed, Jul 18, 2001 at 03:04:20PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Original-Recipient: rfc822;linux-kernel-outgoing On Wed, Jul 18, 2001 at 03:04:20PM -0700, Linus Torvalds wrote: > Can you verify with this alternate patch instead? I take it you've found something that happens to work with egcs 1.1? At a glance the bug appears to be the one that caused gcc/testsuite/gcc.dg/clobbers.c to be written. That one is a fundamental flaw in reload that caused it to be largely rewritten for gcc 2.95. In other words, you may not be able to find a workaround for egcs 1.1 that works for all cases. Using an alternative that writes all of eax/ebx/ecx/edx to memory is probably safer if none of the uses of cpuid are performance-critical. r~ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/