Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751175AbWH3RPS (ORCPT ); Wed, 30 Aug 2006 13:15:18 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751176AbWH3RPR (ORCPT ); Wed, 30 Aug 2006 13:15:17 -0400 Received: from spirit.analogic.com ([204.178.40.4]:58123 "EHLO spirit.analogic.com") by vger.kernel.org with ESMTP id S1751175AbWH3RPQ convert rfc822-to-8bit (ORCPT ); Wed, 30 Aug 2006 13:15:16 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 x-originalarrivaltime: 30 Aug 2006 17:15:12.0482 (UTC) FILETIME=[DA639C20:01C6CC57] Content-class: urn:content-classes:message Subject: Re: [PATCH][RFC] exception processing in early boot Date: Wed, 30 Aug 2006 13:15:07 -0400 Message-ID: In-Reply-To: <200608301902.20728.ak@suse.de> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: [PATCH][RFC] exception processing in early boot Thread-Index: AcbMV9ptSkbAIFmkQSeUIVL7+UMr8w== References: <20060830063932.GB289@1wt.eu> <200608301830.40994.ak@suse.de> <200608301902.20728.ak@suse.de> From: "linux-os \(Dick Johnson\)" To: "Andi Kleen" Cc: , "Willy Tarreau" , , , "Linux kernel" Reply-To: "linux-os \(Dick Johnson\)" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1578 Lines: 40 On Wed, 30 Aug 2006, Andi Kleen wrote: > >> Even the i286 and the 8086 support hlt. Is there some Cyrix chip that >> you are trying to preserve? I think even those all implimented >> hlt as well. > > > According to the kernel code it's > > char hlt_works_ok; /* Problems on some 486Dx4's and old 386's */ > > I don't know more details about what these problems were. > > -Andi > Oh yes. There were some buggy chips that would not let an interrupt take the CPU out of hlt! However, what's wanted here is a hard-stop which you get even with buggy chips because an interrupt won't awaken them. Cheers, Dick Johnson Penguin : Linux version 2.6.16.24 on an i686 machine (5592.62 BogoMips). New book: http://www.AbominableFirebug.com/ _  **************************************************************** The information transmitted in this message is confidential and may be privileged. Any review, retransmission, dissemination, or other use of this information by persons or entities other than the intended recipient is prohibited. If you are not the intended recipient, please notify Analogic Corporation immediately - by replying to this message or by sending an email to DeliveryErrors@analogic.com - and destroy all copies of this information, including any attachments, without reading or disclosing them. Thank you. - 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/