From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Sun, 06 Feb 2005 01:02:15 +0000 (GMT) Received: from embeddededge.com ([IPv6:::ffff:209.113.146.155]:29445 "EHLO penguin.netx4.com") by linux-mips.org with ESMTP id ; Sun, 6 Feb 2005 01:02:00 +0000 Received: from [192.168.2.27] (h69-21-252-132.69-21.unk.tds.net [69.21.252.132]) by penguin.netx4.com (8.12.8/8.12.9) with ESMTP id j160gU4s014347; Sat, 5 Feb 2005 19:42:30 -0500 In-Reply-To: <20050205203333.CD4DBC108D@atlas.denx.de> References: <20050205203333.CD4DBC108D@atlas.denx.de> Mime-Version: 1.0 (Apple Message framework v619.2) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: Content-Transfer-Encoding: 7bit Cc: linux-mips , Robert Michel From: Dan Malek Subject: Re: patch like kexec for MIPS possible? Date: Sat, 5 Feb 2005 20:01:46 -0500 To: Wolfgang Denk X-Mailer: Apple Mail (2.619.2) Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 7167 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: dan@embeddededge.com Precedence: bulk X-list: linux-mips On Feb 5, 2005, at 3:33 PM, Wolfgang Denk wrote: > ..... but I cannot see many situations where > kexec is actually better or more powerful than a decent bootloader > line U-Boot. OK, I'm obviously biased. I agree. I've played with booting kernels from kernels in both PowerPC and MIPS in the past, and the problem I always run into is drivers or kernel functions that assume a particular power up state. When rebooting from another kernel you don't have the same state as from power up, and some software doesn't like this. I suspect main reason for kexec is the horrible x86 bios and nothing that can be done about it. Oh, and I agree with your assessment, not that you are biased :-) -- Dan