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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6D5C0C433FE for ; Mon, 27 Sep 2021 13:11:53 +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 243AA60FED for ; Mon, 27 Sep 2021 13:11:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 243AA60FED Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:58138 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mUqQB-0003GR-5I for qemu-devel@archiver.kernel.org; Mon, 27 Sep 2021 09:11:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:41858) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mUqLW-0003Fr-Jz for qemu-devel@nongnu.org; Mon, 27 Sep 2021 09:07:05 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:26345) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mUqLR-0003kg-Mc for qemu-devel@nongnu.org; Mon, 27 Sep 2021 09:07:02 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1632748016; 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=rl/76egBchC0z6HYvLrR58HS0uTp9+lCDtH+lGvK4/Y=; b=M6HXira5PAThTTtmn6sJ9kJFHhPTMkAJMV/JggAz55LcLDSaGutlh0biibtklWbOPaLnBM x0Pbe+ebXc4J4CemcdfuUzcORqIAXyUfqf8BSc4rlN+pq8ejSsbyupnz2BArsRPXoY2xt8 YXRkQGzYY2Ta2us0xr7liDOWGmRcA2g= 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-400-kon3--wrMp-s78CFPlj5vg-1; Mon, 27 Sep 2021 09:06:52 -0400 X-MC-Unique: kon3--wrMp-s78CFPlj5vg-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0EFB81927804; Mon, 27 Sep 2021 13:06:52 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-14.ams2.redhat.com [10.36.112.14]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 5EA555DF2F; Mon, 27 Sep 2021 13:06:50 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 89B17113853B; Mon, 27 Sep 2021 15:06:47 +0200 (CEST) From: Markus Armbruster To: qemu-devel@nongnu.org Subject: [PULL v2 06/25] qapi: Convert simple union MemoryDeviceInfo to flat one Date: Mon, 27 Sep 2021 15:06:28 +0200 Message-Id: <20210927130647.1271533-7-armbru@redhat.com> In-Reply-To: <20210927130647.1271533-1-armbru@redhat.com> References: <20210927130647.1271533-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=armbru@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" Received-SPF: pass client-ip=170.10.133.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham 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@linaro.org, Eric Blake , Eduardo Habkost Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Simple unions predate flat unions. Having both complicates the QAPI schema language and the QAPI generator. We haven't been using simple unions in new code for a long time, because they are less flexible and somewhat awkward on the wire. To prepare for their removal, convert simple union MemoryDeviceInfo to an equivalent flat one. Adds some boilerplate to the schema, which is a bit ugly, but a lot easier to maintain than the simple union feature. Cc: Eduardo Habkost Cc: Marcel Apfelbaum Signed-off-by: Markus Armbruster Reviewed-by: Eric Blake Message-Id: <20210917143134.412106-7-armbru@redhat.com> --- qapi/machine.json | 42 ++++++++++++++++++++++++++++++++++++++---- 1 file changed, 38 insertions(+), 4 deletions(-) diff --git a/qapi/machine.json b/qapi/machine.json index 157712f006..32d47f4e35 100644 --- a/qapi/machine.json +++ b/qapi/machine.json @@ -1194,6 +1194,38 @@ } } +## +# @MemoryDeviceInfoKind: +# +# Since: 2.1 +## +{ 'enum': 'MemoryDeviceInfoKind', + 'data': [ 'dimm', 'nvdimm', 'virtio-pmem', 'virtio-mem' ] } + +## +# @PCDIMMDeviceInfoWrapper: +# +# Since: 2.1 +## +{ 'struct': 'PCDIMMDeviceInfoWrapper', + 'data': { 'data': 'PCDIMMDeviceInfo' } } + +## +# @VirtioPMEMDeviceInfoWrapper: +# +# Since: 2.1 +## +{ 'struct': 'VirtioPMEMDeviceInfoWrapper', + 'data': { 'data': 'VirtioPMEMDeviceInfo' } } + +## +# @VirtioMEMDeviceInfoWrapper: +# +# Since: 2.1 +## +{ 'struct': 'VirtioMEMDeviceInfoWrapper', + 'data': { 'data': 'VirtioMEMDeviceInfo' } } + ## # @MemoryDeviceInfo: # @@ -1205,10 +1237,12 @@ # Since: 2.1 ## { 'union': 'MemoryDeviceInfo', - 'data': { 'dimm': 'PCDIMMDeviceInfo', - 'nvdimm': 'PCDIMMDeviceInfo', - 'virtio-pmem': 'VirtioPMEMDeviceInfo', - 'virtio-mem': 'VirtioMEMDeviceInfo' + 'base': { 'type': 'MemoryDeviceInfoKind' }, + 'discriminator': 'type', + 'data': { 'dimm': 'PCDIMMDeviceInfoWrapper', + 'nvdimm': 'PCDIMMDeviceInfoWrapper', + 'virtio-pmem': 'VirtioPMEMDeviceInfoWrapper', + 'virtio-mem': 'VirtioMEMDeviceInfoWrapper' } } -- 2.31.1