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=-9.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,WEIRD_QUOTING 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 AF61AC433E0 for ; Tue, 14 Jul 2020 14:59:05 +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 7349B2245A for ; Tue, 14 Jul 2020 14:59:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="Wld4/tim" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7349B2245A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:47326 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jvMOe-0002Fx-O2 for qemu-devel@archiver.kernel.org; Tue, 14 Jul 2020 10:59:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:33462) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jvMNv-0001Gx-0a for qemu-devel@nongnu.org; Tue, 14 Jul 2020 10:58:19 -0400 Received: from mail-wr1-x441.google.com ([2a00:1450:4864:20::441]:46739) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jvMNs-0005Wn-F6 for qemu-devel@nongnu.org; Tue, 14 Jul 2020 10:58:18 -0400 Received: by mail-wr1-x441.google.com with SMTP id r12so22172555wrj.13 for ; Tue, 14 Jul 2020 07:58:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=references:user-agent:from:to:cc:subject:in-reply-to:date :message-id:mime-version:content-transfer-encoding; bh=lv7hYlkGnW1rWcDv6BRNknF1Q7ibX8kdSLjSmxuFngo=; b=Wld4/timG7vx6/XNETDngauohqdwQlzhU/nOVx6EvnMnTaqYNkzjiVSPV9vvUvFeIC tQsFpU2tiHBT8cynaaO20VSz+v4BbL3WOxHn5R38QpOzhDp6bM1BL61QhHJkUQWT5ywP wkw/EaQ7L+QqYnNyB4FoIhX0ITd5rZ7mDsWLBcHBBHVSdkVQrjdgxGmis1O6nag72bkB GYcbwrjiFdZ0V5AyDKHk3zRUAlSjZ2sGcFu0IhLDdTGFAH0A+WEk1CtmT11WN9w7KZSv g17ea86v6GEXRoMx7IZicYnuTCIBRZIIXzAQugCoPkBHfRPA6r2hqbeFJxuzyC1jN7D2 0ibQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:references:user-agent:from:to:cc:subject :in-reply-to:date:message-id:mime-version:content-transfer-encoding; bh=lv7hYlkGnW1rWcDv6BRNknF1Q7ibX8kdSLjSmxuFngo=; b=YiVeZBQjufQxLpUBxM9Iz4YiPpJ7DFHsCpodXRm/bf5nPbFuDxLk1v9P4LmDV0gb6c UE3eAYPsEGFk82R17iQP4G92z56C71fdTr1Od+RM5VUqR3B+6vAhwsnNA0HlLmXKvNOI a4bbbMHwUItc9ry7sy0azhQjHku1J7kyx8hOI8p4e+7lbTtY+z202OykkCNouWqsW/YG ItNzqROETyDV/t68p21DnG9Qtt7rI2M/ifuWhxbxqSv5gSMigU/haBqhv4j5g9kjGn9J kxTDC2B4+T9rC/UgKeLDfgozcKW3eMIMTfV0uYT7nJHsUKKvkXk1VKxJjyMpSJmxNllV K5zg== X-Gm-Message-State: AOAM531o06IQSXh8oW1B4UQBjktY7nw8w+V/8UVYLjb3e/Ih6yEX2dtf pUPuO6oCWW+/GIUgvtwX1KAPfQ== X-Google-Smtp-Source: ABdhPJxFy3zdPQFWYBlLeO0LtQkTq/o+S3diqMM55OolZ7sKIBAz10DfP9Eigkrs2Rl/xG4hOM4SWQ== X-Received: by 2002:a5d:44d1:: with SMTP id z17mr6135592wrr.259.1594738694797; Tue, 14 Jul 2020 07:58:14 -0700 (PDT) Received: from zen.linaroharston ([51.148.130.216]) by smtp.gmail.com with ESMTPSA id u84sm4767223wmg.7.2020.07.14.07.58.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Jul 2020 07:58:13 -0700 (PDT) Received: from zen (localhost [127.0.0.1]) by zen.linaroharston (Postfix) with ESMTP id A44271FF7E; Tue, 14 Jul 2020 15:58:12 +0100 (BST) References: <20200713175746.5936-1-peter.maydell@linaro.org> <20200713175746.5936-5-peter.maydell@linaro.org> User-agent: mu4e 1.5.4; emacs 28.0.50 From: Alex =?utf-8?Q?Benn=C3=A9e?= To: Peter Maydell Subject: Re: [PATCH for-5.1 4/4] docs/system: Document the arm virt board In-reply-to: <20200713175746.5936-5-peter.maydell@linaro.org> Date: Tue, 14 Jul 2020 15:58:12 +0100 Message-ID: <871rleywhn.fsf@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Received-SPF: pass client-ip=2a00:1450:4864:20::441; envelope-from=alex.bennee@linaro.org; helo=mail-wr1-x441.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, WEIRD_QUOTING=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: qemu-arm@nongnu.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Peter Maydell writes: > Document the arm 'virt' board, which has been undocumented > for far too long given that it is the main recommended board > type for arm guests. > > Signed-off-by: Peter Maydell > --- > docs/system/arm/virt.rst | 157 +++++++++++++++++++++++++++++++++++++ > docs/system/target-arm.rst | 1 + > MAINTAINERS | 1 + > 3 files changed, 159 insertions(+) > create mode 100644 docs/system/arm/virt.rst > > diff --git a/docs/system/arm/virt.rst b/docs/system/arm/virt.rst > new file mode 100644 > index 00000000000..6a7823d8bca > --- /dev/null > +++ b/docs/system/arm/virt.rst > @@ -0,0 +1,157 @@ > +'virt' generic virtual platform (``virt``) > +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D > + > +The `virt` board is a platform which does not correspond to any > +real hardware; it is designed for use in virtual machines. > +It is the recommended board type if you simply want to run > +a guest such as Linux and do not care about reproducing the > +idiosyncrasies and limitations of a particular bit of real-world > +hardware. > + > +This is a "versioned" board model, so as well as the ``virt`` machine > +type itself (which may have improvements, bugfixes and other minor > +changes between QEMU versions) a version is provided that guarantees > +to have the same behaviour as that of previous QEMU releases, so > +that VM migration will work between QEMU versions. For instance the > +``virt-5.0`` machine type will behave like the ``virt`` machine from > +the QEMU 5.0 release, and migration should work between ``virt-5.0`` > +of the 5.0 release and ``virt-5.0`` of the 5.1 release. Migration > +is not guaranteed to work between different QEMU releases for > +the non-versioned ``virt`` machine type. > + > +Supported devices > +""""""""""""""""" > + > +The virt board supports: > + > +- Flash memory > +- One PL011 UART > +- An RTC > +- The fw_cfg device that allows a guest to obtain data from QEMU > +- A PL061 GPIO controller > +- An optional SMMUv3 IOMMU > +- hotpluggable DIMMs > +- hotpluggable NVDIMs > +- 32 virtio-mmio transport devices We seem to miss out we also support the virtio-pci transports here. Otherwise: Reviewed-by: Alex Benn=C3=A9e --=20 Alex Benn=C3=A9e