From patchwork Fri Feb 7 14:37:24 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Woodhouse X-Patchwork-Id: 13965150 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.xenproject.org (lists.xenproject.org [192.237.175.120]) (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 E3DC7C02194 for ; Fri, 7 Feb 2025 14:38:03 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.883731.1293650 (Exim 4.92) (envelope-from ) id 1tgPU6-0003uM-Uc; Fri, 07 Feb 2025 14:37:34 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 883731.1293650; Fri, 07 Feb 2025 14:37:34 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1tgPU6-0003uF-S2; Fri, 07 Feb 2025 14:37:34 +0000 Received: by outflank-mailman (input) for mailman id 883731; Fri, 07 Feb 2025 14:37:33 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1tgPU5-0003fk-9b for xen-devel@lists.xenproject.org; Fri, 07 Feb 2025 14:37:33 +0000 Received: from desiato.infradead.org (desiato.infradead.org [2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 0e4b4831-e561-11ef-b3ef-695165c68f79; Fri, 07 Feb 2025 15:37:29 +0100 (CET) Received: from [2001:8b0:10b:1::ebe] (helo=i7.infradead.org) by desiato.infradead.org with esmtpsa (Exim 4.98 #2 (Red Hat Linux)) id 1tgPTx-0000000HBz1-3CSg; Fri, 07 Feb 2025 14:37:26 +0000 Received: from dwoodhou by i7.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1tgPTw-0000000080s-1T6c; Fri, 07 Feb 2025 14:37:24 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list X-Inumbo-ID: 0e4b4831-e561-11ef-b3ef-695165c68f79 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Sender:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description; bh=jqKBIjWS/VL/NerjFJ7l2smMvefEMdIXeKueSmtNuXM=; b=MKKeF0WkOdZdx0i7NBRAm39on6 y9Zmbv3IOMDNE0uJoQ39VshYEZvnKrIUoG1hJhXrBp3oBos2Cya+Ac4rigAlMgFSqu+Kxzawoo4mJ CgxgnkpqM8EJ2St4+/5PMDGEtWQbz5Tb0g8WLiPJBYkhtLR+W3cYK7V4GG+I3qbW9qwNAIsmbiXZq /henGsqGvm0qTFwL7jLGXGjgkakz6CPFNN40julayByQ98c+Baw6d9RnQyHyDYfaKvTKIf5L0AoRF WZvPTj8S7xheeQgO6xnRHiyuejR6S0lHRADH+4/XFzUkMVfPltm2R3mYXCLMNvnZTEViY7l4Kcu/+ MpZaYsxQ==; From: David Woodhouse To: qemu-devel@nongnu.org Cc: Stefano Stabellini , Anthony PERARD , Paul Durrant , "Edgar E. Iglesias" , Kevin Wolf , Hanna Reitz , Paolo Bonzini , Marcelo Tosatti , David Woodhouse , xen-devel@lists.xenproject.org, qemu-block@nongnu.org, kvm@vger.kernel.org, Sean Christopherson Subject: [PATCH 2/2] hw/xen: Add "mode" parameter to xen-block devices Date: Fri, 7 Feb 2025 14:37:24 +0000 Message-ID: <20250207143724.30792-2-dwmw2@infradead.org> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250207143724.30792-1-dwmw2@infradead.org> References: <20250207143724.30792-1-dwmw2@infradead.org> MIME-Version: 1.0 Sender: David Woodhouse X-SRS-Rewrite: SMTP reverse-path rewritten from by desiato.infradead.org. See http://www.infradead.org/rpr.html From: David Woodhouse Block devices don't work in PV Grub (0.9x) if there is no mode specified. It complains: "Error ENOENT when reading the mode" Signed-off-by: David Woodhouse --- hw/block/xen-block.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c index 034a18b70e..e61eab466c 100644 --- a/hw/block/xen-block.c +++ b/hw/block/xen-block.c @@ -408,6 +408,8 @@ static void xen_block_realize(XenDevice *xendev, Error **errp) } xen_device_backend_printf(xendev, "info", "%u", blockdev->info); + xen_device_backend_printf(xendev, "mode", + (blockdev->info & VDISK_READONLY) ? "r" : "w"); xen_device_frontend_printf(xendev, "virtual-device", "%lu", vdev->number);