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=-8.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=ham 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 0E943C433E7 for ; Mon, 12 Oct 2020 10:22:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D56CF2074D for ; Mon, 12 Oct 2020 10:22:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729534AbgJLKW3 (ORCPT ); Mon, 12 Oct 2020 06:22:29 -0400 Received: from foss.arm.com ([217.140.110.172]:35562 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729529AbgJLKW3 (ORCPT ); Mon, 12 Oct 2020 06:22:29 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8E9E831B; Mon, 12 Oct 2020 03:22:28 -0700 (PDT) Received: from e107158-lin.cambridge.arm.com (e107158-lin.cambridge.arm.com [10.1.195.21]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3EC173F719; Mon, 12 Oct 2020 03:22:27 -0700 (PDT) Date: Mon, 12 Oct 2020 11:22:24 +0100 From: Qais Yousef To: Randy Dunlap Cc: Catalin Marinas , Will Deacon , Marc Zyngier , "Peter Zijlstra (Intel)" , Morten Rasmussen , Greg Kroah-Hartman , Linus Torvalds , linux-arm-kernel@lists.infradead.org, linux-arch@vger.kernel.org Subject: Re: [RFC PATCH 2/3] arm64: Add support for asymmetric AArch32 EL0 configurations Message-ID: <20201012102224.jwwwbejmgq7hj373@e107158-lin.cambridge.arm.com> References: <20201008181641.32767-1-qais.yousef@arm.com> <20201008181641.32767-3-qais.yousef@arm.com> <5e1fe1a9-4ebc-bd20-701e-844d5c16dd42@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <5e1fe1a9-4ebc-bd20-701e-844d5c16dd42@infradead.org> User-Agent: NeoMutt/20171215 Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org On 10/08/20 11:22, Randy Dunlap wrote: > On 10/8/20 11:16 AM, Qais Yousef wrote: > > diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig > > index 6d232837cbee..591853504dc4 100644 > > --- a/arch/arm64/Kconfig > > +++ b/arch/arm64/Kconfig > > @@ -1868,6 +1868,20 @@ config DMI > > > > endmenu > > > > +config ASYMMETRIC_AARCH32 > > + bool "Allow support for asymmetric AArch32 support" > > Please drop one "support" or reword the prompt string. Thanks Randy. It now reads "Allow support for asymmetric AArch32 systems" Cheers -- Qais Yousef > > > + depends on COMPAT && EXPERT > > + help > > + Enable this option to allow support for asymmetric AArch32 EL0 > > + CPU configurations. Once the AArch32 EL0 support is detected > > + on a CPU, the feature is made available to user space to allow > > + the execution of 32-bit (compat) applications. If the affinity > > + of the 32-bit application contains a non-AArch32 capable CPU > > + or the last AArch32 capable CPU is offlined, the application > > + will be killed. > > + > > + If unsure say N. > > > -- > ~Randy >