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=-3.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 5079CC388F7 for ; Tue, 10 Nov 2020 12:04:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E71E920678 for ; Tue, 10 Nov 2020 12:04:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729908AbgKJME3 (ORCPT ); Tue, 10 Nov 2020 07:04:29 -0500 Received: from muru.com ([72.249.23.125]:47844 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726462AbgKJME2 (ORCPT ); Tue, 10 Nov 2020 07:04:28 -0500 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 59D5280BA; Tue, 10 Nov 2020 12:04:31 +0000 (UTC) Date: Tue, 10 Nov 2020 14:04:22 +0200 From: Tony Lindgren To: Arnd Bergmann Cc: Russell King - ARM Linux admin , v.narang@samsung.com, a.sahrawat@samsung.com, Marc Zyngier , Sebastian Andrzej Siewior , Vincent Whitchurch , Nick Desaulniers , "linux-kernel@vger.kernel.org" , Nathan Huckleberry , Jian Cai , Thomas Gleixner , Dmitry Safonov <0x7f454c46@gmail.com>, Maninder Singh , Andrew Morton , Will Deacon , Valentin Schneider , Linux ARM Subject: Re: [PATCH 2/3] arm: introduce IRQ stacks Message-ID: <20201110120422.GE26857@atomide.com> References: <1602141333-17822-3-git-send-email-maninder1.s@samsung.com> <20201021124542.GL1551@shell.armlinux.org.uk> <20201021125740.GM1551@shell.armlinux.org.uk> <20201109144549.GA26857@atomide.com> <20201110091904.GC26857@atomide.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Arnd Bergmann [201110 10:04]: > On Tue, Nov 10, 2020 at 10:19 AM Tony Lindgren wrote: > > * Arnd Bergmann [201109 19:10]: > > > On Mon, Nov 9, 2020 at 3:45 PM Tony Lindgren wrote: > > > > > > I know it works, my point was that I'm not sure anyone cares > > > any more ;-) > > > > Well for example whatever Linux running ARMv6 LTE modems out there might > > need to be supported for quite some time. Not sure how many of them are > > able to update kernels though. Certainly network security related issues > > would be a good reason to update the kernels. > > While I agree they should update their kernels, I suspect none of those > modems do. I am however certain that none of them are running an > SMP-enabled multiplatform kernel on an ARM1136r0! Nope, AFAIK all the SMP parts are ARMv6K :) > Are these actually ARMv6? Most ARM11 cores you'd come across > in practice are ARMv6K (ARM1136r1, ARM1167, ARM11MPCore), > in particular every SoC that has any mainline support except for > the ARM1136r0 based OMAP2 and i.MX3. I've been only using smp_on_up for the ARMv6 ARM1136r0 variants for omap2, no SMP on those. Regards, Tony