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=-4.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 2AF22C388F7 for ; Tue, 10 Nov 2020 13:35:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BD67F20825 for ; Tue, 10 Nov 2020 13:35:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZHVnw8uw" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731960AbgKJNfg (ORCPT ); Tue, 10 Nov 2020 08:35:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:48780 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730097AbgKJNfg (ORCPT ); Tue, 10 Nov 2020 08:35:36 -0500 Received: from mail-ot1-f51.google.com (mail-ot1-f51.google.com [209.85.210.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3EB0720825 for ; Tue, 10 Nov 2020 13:35:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1605015335; bh=UdSLbo7EDDIsFl49OPtUX28MCUCIQOcedfBVOANR+0E=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=ZHVnw8uwtjbaSJBRQmdI+w7yxo5rOJlCeEg1YgJ/X+NaIBeexlVTYyhJuOPwPRz5q dPLoAaencKIgEJV0FA38zl49gMR2o/cicZd+Rr+w+SkBCf7SODATM3X6dDVXXM7kju Ajr76tKHAhlRpIxls7XcEP+ExJ4HUoS5U9aK9mVk= Received: by mail-ot1-f51.google.com with SMTP id k3so12459927otp.12 for ; Tue, 10 Nov 2020 05:35:35 -0800 (PST) X-Gm-Message-State: AOAM5334Y+qUF1VEQNKX0kIhbOfnEfy1/S+/j0jUoXcMAZVs9Ht9264x dvrtKzsxwGPCPGd3JNRQXpbTbwdRCDBZ8fYP22I= X-Google-Smtp-Source: ABdhPJzrNzZjooAFpqKeVuxuB7hk2bHjyXqWaVV07LjZM++y42H2QXGO9GH+FlAwRKv5VU23fGqpasu68px2f/vJfZE= X-Received: by 2002:a05:6830:22d2:: with SMTP id q18mr12737619otc.305.1605015334402; Tue, 10 Nov 2020 05:35:34 -0800 (PST) MIME-Version: 1.0 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> <20201110120422.GE26857@atomide.com> In-Reply-To: <20201110120422.GE26857@atomide.com> From: Arnd Bergmann Date: Tue, 10 Nov 2020 14:35:17 +0100 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 2/3] arm: introduce IRQ stacks To: Tony Lindgren 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 Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Nov 10, 2020 at 1:06 PM Tony Lindgren wrote: > > 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. Obviously all SMP hardware is ARMv6K, the only question I raised in point "c)" is what we would lose by making ARMv6 (ARM1136r0) support and SMP mutually exclusive in a kernel configuration, and I suppose the answer remains "testing". Arnd