From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC6BFC0018C for ; Wed, 16 Dec 2020 10:09:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 74FD62313C for ; Wed, 16 Dec 2020 10:09:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726255AbgLPKI4 convert rfc822-to-8bit (ORCPT ); Wed, 16 Dec 2020 05:08:56 -0500 Received: from eu-smtp-delivery-151.mimecast.com ([185.58.86.151]:32392 "EHLO eu-smtp-delivery-151.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726104AbgLPKI4 (ORCPT ); Wed, 16 Dec 2020 05:08:56 -0500 Received: from AcuMS.aculab.com (156.67.243.126 [156.67.243.126]) (Using TLS) by relay.mimecast.com with ESMTP id uk-mtapsc-1-DQ7o0olHPkKE9tyKf8G5Zg-1; Wed, 16 Dec 2020 10:07:17 +0000 X-MC-Unique: DQ7o0olHPkKE9tyKf8G5Zg-1 Received: from AcuMS.Aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) by AcuMS.aculab.com (fd9f:af1c:a25b:0:43c:695e:880f:8750) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 16 Dec 2020 10:07:17 +0000 Received: from AcuMS.Aculab.com ([fe80::43c:695e:880f:8750]) by AcuMS.aculab.com ([fe80::43c:695e:880f:8750%12]) with mapi id 15.00.1347.000; Wed, 16 Dec 2020 10:07:17 +0000 From: David Laight To: 'Sam Ravnborg' , Arnd Bergmann CC: Guo Ren , Thomas Gleixner , "Marco Elver" , Arnd Bergmann , Russell King , Ingo Molnar , Peter Zijlstra , Darren Hart , Nick Desaulniers , Davidlohr Bueso , "Elena Reshetova" , Greg Kroah-Hartman , "linux-kernel@vger.kernel.org" , "linux-csky@vger.kernel.org" , sparclinux , "David S. Miller" Subject: RE: [PATCH 1/2] futex: mark futex_detect_cmpxchg() as 'noinline' Thread-Topic: [PATCH 1/2] futex: mark futex_detect_cmpxchg() as 'noinline' Thread-Index: AQHW0xooHlKGsPugJ0Clc+udYv6uHan5fdZg Date: Wed, 16 Dec 2020 10:07:17 +0000 Message-ID: <56daed1d2cbd40fea0a7170c45081cf7@AcuMS.aculab.com> References: <20190307091514.2489338-1-arnd@arndb.de> <87czzeg5ep.fsf@nanos.tec.linutronix.de> <20201215193800.GA1098247@ravnborg.org> In-Reply-To: <20201215193800.GA1098247@ravnborg.org> Accept-Language: en-GB, en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.202.205.107] MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=C51A453 smtp.mailfrom=david.laight@aculab.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: aculab.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8BIT Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sam Ravnborg > Sent: 15 December 2020 19:38 > > Hi Arnd, > > On Tue, Dec 15, 2020 at 12:26:10PM +0100, Arnd Bergmann wrote: > > On Tue, Dec 15, 2020 at 7:09 AM Guo Ren wrote: ... > > - Disable SMP support for sun4m/sun4d. From the historic git > > tree, it's unclear how well this ever worked, and very few machines > > of this class ever existed > Yeah, I have collection of sparc32 machines that I played around with > once. Including one sun4d that I brought from a friendly Linux fellow in > the UK. But somehow I lost interest as this is all very nice machines > but not useful for anything real work. ICL made a few SMP sparc32 systems. I think the first ones used the original Cypress cpu running at 25MHz. (I'm fairly sure these were SMP-capable, the later 40MHz definitely were.) These were full sized VMEbus beasts. Somewhere I've got a 32MByte memory board - over a square foot of board. The memory is all 64k by 1 with all the pins on one edge and the chips vertical. Really looks as though it should glow red and be used for cooking toast. Even with 4 of those you're not going to run anything modern! There were also some later mbus+sbus systems with dual sbus! Designed by Fujitsu. None of these ever ran solaris. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)