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=-11.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS 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 C175DC433E3 for ; Mon, 24 Aug 2020 17:24:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9B7B52074D for ; Mon, 24 Aug 2020 17:24:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598289891; bh=u6ITf2TE+0Yj01YyyE3ZFTxoh+W/UkoJjDlG96zQlB8=; h=References:In-Reply-To:From:Date:Subject:To:Cc:List-ID:From; b=wXbSapswXa/b6hKsZf4XxAms0IS1knCB4rAXh/tlVxlPS0s+2GgQSE5PRH+a8SnB5 LEgnWjzbEl6FgGPYR8mK/eHMXqXc6aNgnAbsPwl72mdtrlyXywO6jQ+FegitoidbnG jt236uIiBGl/MXyvaltu79pc0ZKTRJi5aMowFb3I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727980AbgHXRYs (ORCPT ); Mon, 24 Aug 2020 13:24:48 -0400 Received: from mail.kernel.org ([198.145.29.99]:53786 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727080AbgHXRYO (ORCPT ); Mon, 24 Aug 2020 13:24:14 -0400 Received: from mail-ot1-f43.google.com (mail-ot1-f43.google.com [209.85.210.43]) (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 7323920738; Mon, 24 Aug 2020 17:24:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598289853; bh=u6ITf2TE+0Yj01YyyE3ZFTxoh+W/UkoJjDlG96zQlB8=; h=References:In-Reply-To:From:Date:Subject:To:Cc:From; b=m9FtahviMbr5P384IS5H5uSVrGUs6/7NH8y15icrkiBkCK+DFwszIICTbKTpcPNkh Zz7xc0u+6Iw2jOvPzsky+c1gEznxeotr5lP+F3+ivqT1NBYYnsJlk+Bmwd9PR7+UzA fujNQZyw4bSqeIX0OO4ScKt2OsDcSCIiY80sfkqw= Received: by mail-ot1-f43.google.com with SMTP id i11so956408otr.5; Mon, 24 Aug 2020 10:24:13 -0700 (PDT) X-Gm-Message-State: AOAM531McTIrMEOiieC2umWprnKqinWS5r5Pa47xiYCU/p3CdkS3HYdr lQg89eiJz4komRzIGuG3TiUcFp4I9a9zugsNXt4= X-Google-Smtp-Source: ABdhPJx54D6AG+VvNZEytOaXrn/shKRo/oQCyztVQLHUm4m/2JTRanN3KarJdrloIn4PZRieB1BNuwnqUHAdUuqZ9Dc= X-Received: by 2002:a9d:6251:: with SMTP id i17mr4017155otk.90.1598289852763; Mon, 24 Aug 2020 10:24:12 -0700 (PDT) MIME-Version: 1.0 References: <1598287583-71762-1-git-send-email-mikelley@microsoft.com> <1598287583-71762-11-git-send-email-mikelley@microsoft.com> In-Reply-To: <1598287583-71762-11-git-send-email-mikelley@microsoft.com> From: Ard Biesheuvel Date: Mon, 24 Aug 2020 19:24:01 +0200 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH v7 10/10] Drivers: hv: Enable Hyper-V code to be built on ARM64 To: Michael Kelley Cc: Will Deacon , Arnd Bergmann , Catalin Marinas , Mark Rutland , Marc Zyngier , Linux ARM , Greg Kroah-Hartman , Linux Kernel Mailing List , linux-hyperv@vger.kernel.org, linux-efi , linux-arch , wei.liu@kernel.org, vkuznets , KY Srinivasan , Sunil Muthuswamy , Boqun Feng Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 24 Aug 2020 at 18:48, Michael Kelley wrote: > > Update drivers/hv/Kconfig so CONFIG_HYPERV can be selected on > ARM64, causing the Hyper-V specific code to be built. > > Signed-off-by: Michael Kelley > --- > drivers/hv/Kconfig | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/hv/Kconfig b/drivers/hv/Kconfig > index 79e5356..1113e49 100644 > --- a/drivers/hv/Kconfig > +++ b/drivers/hv/Kconfig > @@ -4,7 +4,8 @@ menu "Microsoft Hyper-V guest support" > > config HYPERV > tristate "Microsoft Hyper-V client drivers" > - depends on X86 && ACPI && X86_LOCAL_APIC && HYPERVISOR_GUEST > + depends on ACPI && \ > + ((X86 && X86_LOCAL_APIC && HYPERVISOR_GUEST) || ARM64) > select PARAVIRT > select X86_HV_CALLBACK_VECTOR > help Given the comment in a previous patch +/* + * All data structures defined in the TLFS that are shared between Hyper-V + * and a guest VM use Little Endian byte ordering. This matches the default + * byte ordering of Linux running on ARM64, so no special handling is required. + */ shouldn't this depend on !CONFIG_CPU_BIG_ENDIAN ?