Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261603AbVDTNKy (ORCPT ); Wed, 20 Apr 2005 09:10:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261618AbVDTNKx (ORCPT ); Wed, 20 Apr 2005 09:10:53 -0400 Received: from extgw-uk.mips.com ([62.254.210.129]:46618 "EHLO bacchus.net.dhis.org") by vger.kernel.org with ESMTP id S261603AbVDTNKu (ORCPT ); Wed, 20 Apr 2005 09:10:50 -0400 Date: Wed, 20 Apr 2005 14:10:25 +0100 From: Ralf Baechle To: Chris Wedgwood Cc: Paul Jackson , ikebe.takashi@lab.ntt.co.jp, linux-kernel@vger.kernel.org Subject: Re: [PATCH x86_64] Live Patching Function on 2.6.11.7 Message-ID: <20050420131025.GA8255@linux-mips.org> References: <4263275A.2020405@lab.ntt.co.jp> <20050418040718.GA31163@taniwha.stupidest.org> <4263356D.9080007@lab.ntt.co.jp> <20050418061221.GA32315@taniwha.stupidest.org> <42636285.9060405@lab.ntt.co.jp> <20050418075635.GB644@taniwha.stupidest.org> <20050418021609.07f6ec16.pj@sgi.com> <20050418092505.GA2206@taniwha.stupidest.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050418092505.GA2206@taniwha.stupidest.org> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 719 Lines: 19 On Mon, Apr 18, 2005 at 02:25:06AM -0700, Chris Wedgwood wrote: > > The call switching folks have been doing live patching at least > > since I worked on it, over 25 years ago. This is not just > > marketing. > > That still doesn't explain *why* live patching is needed. The more optimization a modern compiler does the less practical a patching approach seems for anything but very trivial fixes. I'd try a shared library based approach for on the fly updates. Ralf - 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/