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=-16.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 833D6C432BE for ; Tue, 27 Jul 2021 16:35:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61C2D61B93 for ; Tue, 27 Jul 2021 16:35:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230248AbhG0Qf3 (ORCPT ); Tue, 27 Jul 2021 12:35:29 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:58543 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230097AbhG0Qf2 (ORCPT ); Tue, 27 Jul 2021 12:35:28 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1627403728; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=90tCfQVeRTH8MaC1o4KYlvgxHv2WwxCXpgUHehd5MrI=; b=e9PtRDJgqgSgi1Zv12JFPCzmPXrZkBI+3BR/cCxN8BaZxSv28rGYlaTbE5xht0R63yw3RI HWevbwAg6sdRukS6/C2S/jChEgVKbtmTSLmQidUKItoZPw5QHjcAUED0K1IYVcS+5iFI/e HoZnx40BU4nvlmceuAN7Lz6tfqLu8G8= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-494-PbhXqnTjOW6wEiU_ZuHt2w-1; Tue, 27 Jul 2021 12:35:27 -0400 X-MC-Unique: PbhXqnTjOW6wEiU_ZuHt2w-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A9AB4802B9F; Tue, 27 Jul 2021 16:35:24 +0000 (UTC) Received: from localhost (unknown [10.39.192.46]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 986A260862; Tue, 27 Jul 2021 16:35:16 +0000 (UTC) From: Cornelia Huck To: Cai Huoqing , alex.williamson@redhat.com, jgg@ziepe.ca, eric.auger@redhat.com, kevin.tian@intel.com, giovanni.cabiddu@intel.com, mgurtovoy@nvidia.com, jannh@google.com Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Cai Huoqing Subject: Re: [PATCH] vfio: Add "#ifdef CONFIG_MMU" for vma operations In-Reply-To: <20210727034000.547-1-caihuoqing@baidu.com> Organization: Red Hat GmbH References: <20210727034000.547-1-caihuoqing@baidu.com> User-Agent: Notmuch/0.32.1 (https://notmuchmail.org) Date: Tue, 27 Jul 2021 18:35:14 +0200 Message-ID: <877dhb4svx.fsf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 27 2021, Cai Huoqing wrote: > Add "#ifdef CONFIG_MMU", > because vma mmap and vm_operations_struct depend on MMU vfio_pci already depends on MMU -- what problems are you trying to fix? > > Signed-off-by: Cai Huoqing > --- > drivers/vfio/pci/vfio_pci.c | 4 ++++ > drivers/vfio/vfio.c | 8 ++++++++ > 2 files changed, 12 insertions(+)