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 47102C433F5 for ; Mon, 15 Nov 2021 13:50:39 +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 1167F61A40 for ; Mon, 15 Nov 2021 13:50:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 1167F61A40 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]:33178 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mmcNZ-0001Uh-U8 for qemu-devel@archiver.kernel.org; Mon, 15 Nov 2021 08:50:37 -0500 Received: from eggs.gnu.org ([209.51.188.92]:36322) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mmcLJ-00005L-GK for qemu-devel@nongnu.org; Mon, 15 Nov 2021 08:48:17 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:28682) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mmcLG-0005ti-8Y for qemu-devel@nongnu.org; Mon, 15 Nov 2021 08:48:16 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1636984093; 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=39X9PHyLgG5tKgwq8KHgl7E9/h1ZlQME+TsbaEXLlrw=; b=NRisip7WYt8TWUi+SMzoQUhDNGiOhKXhJ6bnJGnoR19SLaUL7Kv5gfrCUpsCnc7/YFJIqs fmyn82WklT3YpchB3/EqmaE9R8Wu0C6z932wih9slw7GgjNqMXtSwOr+xq9RexaAIjXW4x H0omCA1Lpth74/1AFN5gkeaky4xsgmI= 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-505-Xv4NxenOOdGGoggfrfxtoA-1; Mon, 15 Nov 2021 08:48:08 -0500 X-MC-Unique: Xv4NxenOOdGGoggfrfxtoA-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id EC53719251A2; Mon, 15 Nov 2021 13:48:04 +0000 (UTC) Received: from blackfin.pond.sub.org (ovpn-112-7.ams2.redhat.com [10.36.112.7]) by smtp.corp.redhat.com (Postfix) with ESMTPS id CC61F5F4EF; Mon, 15 Nov 2021 13:48:03 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id 4854011380A7; Mon, 15 Nov 2021 14:48:02 +0100 (CET) From: Markus Armbruster To: Peter Maydell Subject: Re: [PATCH RFC 2/2] hw: Replace drive_get_next() by drive_get() References: <20211115125536.3341681-1-armbru@redhat.com> <20211115125536.3341681-3-armbru@redhat.com> Date: Mon, 15 Nov 2021 14:48:02 +0100 In-Reply-To: (Peter Maydell's message of "Mon, 15 Nov 2021 13:38:43 +0000") Message-ID: <875ystjzsd.fsf@dusky.pond.sub.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 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-Type: text/plain Received-SPF: pass client-ip=216.205.24.124; envelope-from=armbru@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=-0.7, 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=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: bin.meng@windriver.com, mark.cave-ayland@ilande.co.uk, qemu-devel@nongnu.org, edgar.iglesias@gmail.com, sundeep.lkml@gmail.com, qemu-block@nongnu.org, andrew.smirnov@gmail.com, hskinnemoen@google.com, joel@jms.id.au, atar4qemu@gmail.com, alistair@alistair23.me, b.galvani@gmail.com, nieklinnenbank@gmail.com, qemu-arm@nongnu.org, clg@kaod.org, kwolf@redhat.com, qemu-riscv@nongnu.org, andrew@aj.id.au, f4bug@amsat.org, Andrew.Baumann@microsoft.com, jcd@tribudubois.net, kfting@nuvoton.com, hreitz@redhat.com, palmer@dabbelt.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Peter Maydell writes: > On Mon, 15 Nov 2021 at 12:55, Markus Armbruster wrote: >> >> drive_get_next() is basically a bad idea. It returns the "next" block >> backend of a certain interface type. "Next" means bus=0,unit=N, where >> subsequent calls count N up from zero, per interface type. >> >> This lets you define unit numbers implicitly by execution order. If the >> order changes, or new calls appear "in the middle", unit numbers change. >> ABI break. Hard to spot in review. >> >> Explicit is better than implicit: use drive_get() directly. >> >> Signed-off-by: Markus Armbruster >> --- >> include/sysemu/blockdev.h | 1 - >> blockdev.c | 10 ---------- >> hw/arm/aspeed.c | 21 +++++++++++++-------- >> hw/arm/cubieboard.c | 2 +- >> hw/arm/imx25_pdk.c | 2 +- >> hw/arm/integratorcp.c | 2 +- >> hw/arm/mcimx6ul-evk.c | 2 +- >> hw/arm/mcimx7d-sabre.c | 2 +- >> hw/arm/msf2-som.c | 2 +- >> hw/arm/npcm7xx_boards.c | 6 +++--- >> hw/arm/orangepi.c | 2 +- >> hw/arm/raspi.c | 2 +- >> hw/arm/realview.c | 2 +- >> hw/arm/sabrelite.c | 2 +- >> hw/arm/versatilepb.c | 4 ++-- >> hw/arm/vexpress.c | 6 +++--- >> hw/arm/xilinx_zynq.c | 16 +++++++++------- >> hw/arm/xlnx-versal-virt.c | 3 ++- >> hw/arm/xlnx-zcu102.c | 6 +++--- >> hw/microblaze/petalogix_ml605_mmu.c | 2 +- >> hw/misc/sifive_u_otp.c | 2 +- >> hw/riscv/microchip_pfsoc.c | 2 +- >> hw/sparc64/niagara.c | 2 +- >> 23 files changed, 49 insertions(+), 52 deletions(-) > > This would be easier to review if it didn't try to change all of > these board/SoC models at once. Each one of them is entirely > separate review work. Happy to split, but first I'd like to get some advice on the part I'm unsure about; see my cover letter.