Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755802AbXEZCRm (ORCPT ); Fri, 25 May 2007 22:17:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751525AbXEZCRf (ORCPT ); Fri, 25 May 2007 22:17:35 -0400 Received: from saraswathi.solana.com ([198.99.130.12]:44082 "EHLO saraswathi.solana.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751043AbXEZCRf (ORCPT ); Fri, 25 May 2007 22:17:35 -0400 Date: Fri, 25 May 2007 22:10:13 -0400 From: Jeff Dike To: Roland McGrath Cc: LKML Subject: Re: Current utrace breaks UML Message-ID: <20070526021013.GA11490@c2.user-mode-linux.org> References: <20070523121902.GA4365@c2.user-mode-linux.org> <20070526013513.E894D1F8511@magilla.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070526013513.E894D1F8511@magilla.localdomain> User-Agent: Mutt/1.4.2.2i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 965 Lines: 24 On Fri, May 25, 2007 at 06:35:13PM -0700, Roland McGrath wrote: > Oops! I overlooked the need to preserve the orig_eax value, though its > necessity is obvious. This makes me wonder about those previous > reports that UML was working OK. The one from me was on x86_64, where PTRACE_SYSEMU isn't an issue yet. > I've fixed this in the latest utrace patch set. I also wired up > sysemu on x86_64. This means 32-bit processes calling ptrace now > support it for full compatibility with native i386, which the vanilla > kernel does not. It also means it works for 64-bit ptrace calls, > whether operating on a 64-bit or a 32-bit target process. Beautiful! Jeff -- Work email - jdike at linux dot intel dot com - 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/