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=-15.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,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 7DE3CC433B4 for ; Wed, 12 May 2021 03:58:54 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 06D2A61205 for ; Wed, 12 May 2021 03:58:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 06D2A61205 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:43452 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lgg1N-0004wl-0N for qemu-devel@archiver.kernel.org; Tue, 11 May 2021 23:58:53 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:46824) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgg0X-0003nX-33 for qemu-devel@nongnu.org; Tue, 11 May 2021 23:58:01 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:50251) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lgg0V-0003i2-30 for qemu-devel@nongnu.org; Tue, 11 May 2021 23:58:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1620791878; 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: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zARzJ3VY+v5cLeah1bkFjzw4VgZs19HGeS+bK/EIeQ8=; b=STDUuppw6dGfY92YB3oacnbKyOO2dHpUlRLUiE21sjZkbZ0on487CEyjCAiZG/wLTUtNHk Gq2TI7/LB0ov9rwF7du7kacpb0VWIEb7DfznTd7fmFHpfTMi82Ggt3Gape58uTjD1QL/Xm junjFgGdEmOOn11lHFq1SWToRILoTUQ= Received: from mail-wr1-f69.google.com (mail-wr1-f69.google.com [209.85.221.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-536-9vozfp9sPHmAa1rggW266w-1; Tue, 11 May 2021 23:57:57 -0400 X-MC-Unique: 9vozfp9sPHmAa1rggW266w-1 Received: by mail-wr1-f69.google.com with SMTP id c13-20020a5d6ccd0000b029010ec741b84bso916282wrc.23 for ; Tue, 11 May 2021 20:57:56 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=zARzJ3VY+v5cLeah1bkFjzw4VgZs19HGeS+bK/EIeQ8=; b=foqsnC/MK5Pfh5QVtDTeku1DoOl72EetCFFeZrwjC58Q1IU2uq2OAyESAN6IbknttP xgjjqK9rlMMdsdjWGTpWMG004D4NeEwIJfWi0bV78+J/z7YeUUb/Tp5ZFdqap/CNk7Wa rrZn1DGxKpRsia0nILVhKeHqo3MUksrcjGvFe2DjlDSLOPxZcbfTgJ8o8OVAnkEjKc5j b3RpLP+AFXioDkC70MSDIXn5gaWA5Xb9+s4SSUviORBsxd9DViTuxUv6468b6PMPuX3p wMy9W5G73TdmKcj46XgmKcmSD9OFpB85Ea53X6WsVzUKXg79iUT7liWxzFY4ofQFPDSH izOQ== X-Gm-Message-State: AOAM533Pdx2ZsKMe53jQt0QCSbDto6L+h4lyFLlaIHmzz4EheB5wShd8 ++0E82eMq4/Ys2MSefPGyJBfZZOLdlIKyKa90boXttek0jvArWImGa94f8vN4/HPyIpR+Kh/YbJ 2HOOd+07f1Dc3h1A= X-Received: by 2002:adf:cd8c:: with SMTP id q12mr42302835wrj.328.1620791875778; Tue, 11 May 2021 20:57:55 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwazc81pSOKdVPUNDhqDUshi7M+/5oa+rVxXqpQHL1E6FUH3u52QGBywAK8AE1tFMKL7qcj6g== X-Received: by 2002:adf:cd8c:: with SMTP id q12mr42302807wrj.328.1620791875530; Tue, 11 May 2021 20:57:55 -0700 (PDT) Received: from [192.168.1.36] (39.red-81-40-121.staticip.rima-tde.net. [81.40.121.39]) by smtp.gmail.com with ESMTPSA id z19sm4949700wmf.47.2021.05.11.20.57.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 11 May 2021 20:57:55 -0700 (PDT) Subject: Re: [RFC PATCH 1/5] hw/mem/nvdimm: Use Kconfig 'imply' instead of 'depends on' To: David Gibson References: <20210511155354.3069141-1-philmd@redhat.com> <20210511155354.3069141-2-philmd@redhat.com> From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Message-ID: <21e0a306-ccfb-a627-1496-14f831fe80a7@redhat.com> Date: Wed, 12 May 2021 05:57:53 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.8.1 MIME-Version: 1.0 In-Reply-To: Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=philmd@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=WINDOWS-1252 Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.133.124; envelope-from=philmd@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -34 X-Spam_score: -3.5 X-Spam_bar: --- X-Spam_report: (-3.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.699, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Thomas Huth , Eduardo Habkost , "Michael S. Tsirkin" , Alexey Kardashevskiy , Richard Henderson , qemu-devel@nongnu.org, Greg Kurz , Igor Mammedov , "open list:ARM TCG CPUs" , qemu-ppc@nongnu.org, John Paul Adrian Glaubitz , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 5/12/21 4:24 AM, David Gibson wrote: > On Tue, May 11, 2021 at 05:53:50PM +0200, Philippe Mathieu-Daudé wrote: >> Per the kconfig.rst: >> >> A device should be listed [...] ``imply`` if (depending on >> the QEMU command line) the board may or may not be started >> without it. >> >> This is the case with the NVDIMM device, so use the 'imply' >> weak reverse dependency to select the symbol. > > Uh.. It should definitely be possible to start a pseries machine > without NVDIMM. I would have guessed the same for PC. Yes, this is what this patch does. With it we can build with: CONFIG_NVDIMM=n > >> >> Signed-off-by: Philippe Mathieu-Daudé >> --- >> default-configs/devices/ppc64-softmmu.mak | 1 - >> hw/arm/Kconfig | 1 + >> hw/i386/Kconfig | 1 + >> hw/mem/Kconfig | 2 -- >> hw/ppc/Kconfig | 1 + >> 5 files changed, 3 insertions(+), 3 deletions(-) >> >> diff --git a/default-configs/devices/ppc64-softmmu.mak b/default-configs/devices/ppc64-softmmu.mak >> index ae0841fa3a1..cca52665d90 100644 >> --- a/default-configs/devices/ppc64-softmmu.mak >> +++ b/default-configs/devices/ppc64-softmmu.mak >> @@ -8,4 +8,3 @@ CONFIG_POWERNV=y >> >> # For pSeries >> CONFIG_PSERIES=y >> -CONFIG_NVDIMM=y >> diff --git a/hw/arm/Kconfig b/hw/arm/Kconfig >> index b887f6a5b17..67723d9ea6a 100644 >> --- a/hw/arm/Kconfig >> +++ b/hw/arm/Kconfig >> @@ -6,6 +6,7 @@ config ARM_VIRT >> imply VFIO_PLATFORM >> imply VFIO_XGMAC >> imply TPM_TIS_SYSBUS >> + imply NVDIMM >> select ARM_GIC >> select ACPI >> select ARM_SMMUV3 >> diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig >> index 7f91f30877f..66838fa397b 100644 >> --- a/hw/i386/Kconfig >> +++ b/hw/i386/Kconfig >> @@ -23,6 +23,7 @@ config PC >> imply TPM_TIS_ISA >> imply VGA_PCI >> imply VIRTIO_VGA >> + imply NVDIMM >> select FDC >> select I8259 >> select I8254 >> diff --git a/hw/mem/Kconfig b/hw/mem/Kconfig >> index a0ef2cf648e..8b19fdc49f1 100644 >> --- a/hw/mem/Kconfig >> +++ b/hw/mem/Kconfig >> @@ -7,6 +7,4 @@ config MEM_DEVICE >> >> config NVDIMM >> bool >> - default y >> - depends on (PC || PSERIES || ARM_VIRT) >> select MEM_DEVICE >> diff --git a/hw/ppc/Kconfig b/hw/ppc/Kconfig >> index e51e0e5e5ac..66e0b15d9ef 100644 >> --- a/hw/ppc/Kconfig >> +++ b/hw/ppc/Kconfig >> @@ -3,6 +3,7 @@ config PSERIES >> imply PCI_DEVICES >> imply TEST_DEVICES >> imply VIRTIO_VGA >> + imply NVDIMM >> select DIMM >> select PCI >> select SPAPR_VSCSI >