From patchwork Fri Aug 23 14:15:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Michael Tokarev X-Patchwork-Id: 13775292 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 87A67C52D7C for ; Fri, 23 Aug 2024 14:17:34 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1shV61-0002xq-S1; Fri, 23 Aug 2024 10:16:58 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1shV57-00021z-5W; Fri, 23 Aug 2024 10:16:03 -0400 Received: from isrv.corpit.ru ([86.62.121.231]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1shV55-0004Hn-5Z; Fri, 23 Aug 2024 10:16:00 -0400 Received: from tsrv.corpit.ru (tsrv.tls.msk.ru [192.168.177.2]) by isrv.corpit.ru (Postfix) with ESMTP id F106787EC4; Fri, 23 Aug 2024 17:14:45 +0300 (MSK) Received: from tls.msk.ru (mjt.wg.tls.msk.ru [192.168.177.130]) by tsrv.corpit.ru (Postfix) with SMTP id 9EA8B12B0F7; Fri, 23 Aug 2024 17:15:42 +0300 (MSK) Received: (nullmailer pid 1411621 invoked by uid 1000); Fri, 23 Aug 2024 14:15:42 -0000 From: Michael Tokarev To: qemu-devel@nongnu.org Cc: Peter Maydell , qemu-trivial@nongnu.org, qemu-stable@nongnu.org, Michael Tokarev Subject: [PULL 2/3] system/vl.c: Print machine name, not "(null)", for unknown machine types Date: Fri, 23 Aug 2024 17:15:41 +0300 Message-Id: <20240823141542.1411594-3-mjt@tls.msk.ru> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240823141542.1411594-1-mjt@tls.msk.ru> References: <20240823141542.1411594-1-mjt@tls.msk.ru> MIME-Version: 1.0 Received-SPF: pass client-ip=86.62.121.231; envelope-from=mjt@tls.msk.ru; helo=isrv.corpit.ru X-Spam_score_int: -68 X-Spam_score: -6.9 X-Spam_bar: ------ X-Spam_report: (-6.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_HI=-5, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Peter Maydell In commit 412d294ffdc we tried to improve the error message printed when the machine type is unknown, but we used the wrong variable, resulting in: $ ./build/x86/qemu-system-aarch64 -M bang qemu-system-aarch64: unsupported machine type: "(null)" Use -machine help to list supported machines Use the right variable, so we produce more helpful output: $ ./build/x86/qemu-system-aarch64 -M bang qemu-system-aarch64: unsupported machine type: "bang" Use -machine help to list supported machines Note that we must move the qdict_del() to below the error_setg(), because machine_type points into the value of that qdict entry, and deleting it will make the pointer invalid. Cc: qemu-stable@nongnu.org Fixes: 412d294ffdc ("vl.c: select_machine(): add selected machine type to error message") Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Michael Tokarev Signed-off-by: Michael Tokarev --- system/vl.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/system/vl.c b/system/vl.c index 41d53d2456..01b8b8e77a 100644 --- a/system/vl.c +++ b/system/vl.c @@ -1679,10 +1679,10 @@ static MachineClass *select_machine(QDict *qdict, Error **errp) if (machine_type) { machine_class = find_machine(machine_type, machines); - qdict_del(qdict, "type"); if (!machine_class) { - error_setg(errp, "unsupported machine type: \"%s\"", optarg); + error_setg(errp, "unsupported machine type: \"%s\"", machine_type); } + qdict_del(qdict, "type"); } else { machine_class = find_default_machine(machines); if (!machine_class) {