From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pdx-out-006.esa.us-west-2.outbound.mail-perimeter.amazon.com (pdx-out-006.esa.us-west-2.outbound.mail-perimeter.amazon.com [52.26.1.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 51D3A33EAE9 for ; Thu, 29 Jan 2026 16:39:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=52.26.1.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769704766; cv=none; b=DWrQVmPj4JuG74Y+ylMYpXWDp7G80secXMm9TpL3l5ro8ICkWYrTXCVEo9+9lRXKk5IfTmah3Fm8ORZYjUaezrjIPoA35Zj1tpMKOF3q+DrxI6qytzjrRJ8IL1MvlEiz9WLxSRdxaLKuZfI1oxMrFkzt0O0rpz9BBpye5uhBsrM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1769704766; c=relaxed/simple; bh=Fc/cgxlRFDNreo7V/sGH4YF+Ny5qj9VmO/oiDU3g1yc=; h=Message-ID:Date:MIME-Version:Subject:To:CC:References:From: In-Reply-To:Content-Type; b=vGIzEJO+bz7kwef7pJAp80SBVghYffE78bTzIKmx+jtOE5JvVnfH3p0rqB7/6HwgU0BU2PhmjhCQ5jRPJ4kDtI1XMuJYAmPrcANzPb8tQStbCaj23ePsoF/SvZ5lmDqGkJBnkuyA8w6RxZLukYIS1rKNJIFeHYEcBahYoV3SrA8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com; spf=pass smtp.mailfrom=amazon.de; dkim=pass (2048-bit key) header.d=amazon.com header.i=@amazon.com header.b=JxPuN3zI; arc=none smtp.client-ip=52.26.1.71 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=amazon.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=amazon.com header.i=@amazon.com header.b="JxPuN3zI" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazoncorp2; t=1769704764; x=1801240764; h=message-id:date:mime-version:subject:to:cc:references: from:in-reply-to:content-transfer-encoding; bh=Fc/cgxlRFDNreo7V/sGH4YF+Ny5qj9VmO/oiDU3g1yc=; b=JxPuN3zIeQwqzvbumke6gDP+KnQnc/IpVGWXvWrZJ3GnkVAbBoyekWj6 UWxnPDE0O/S8gCKz8Wl/3SyqKWE/zMTGFFmEHKUWII32sI5ANWtDpEJgc q73bOPInNNDyJSWwWL+aDCtIZIoZTQ5Oeg3L//6zkPYIcX9865PaMBD54 krdSE92esWmLm3IXRw96IiUGI1KFlCtE9LpH+Abl8VyEuI0o/LOv+Dc4j qGJgcMj6RKDAk0XnwwKqymm92RSUBOEgTX93cmLn2+9lVna0wer+kZSEW +uK6on8DMRB5cMG1sa4K5hbMfANcVwdpOPXiEMXdJ5dsefjcRd/zwvwxP g==; X-CSE-ConnectionGUID: 7H9g9UeMSIi8+Q9d7g1J6A== X-CSE-MsgGUID: Scqj9ktcQ969WVJL3JnWBQ== X-IronPort-AV: E=Sophos;i="6.21,261,1763424000"; d="scan'208";a="11853402" Received: from ip-10-5-9-48.us-west-2.compute.internal (HELO smtpout.naws.us-west-2.prod.farcaster.email.amazon.dev) ([10.5.9.48]) by internal-pdx-out-006.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 29 Jan 2026 16:39:22 +0000 Received: from EX19MTAUWB002.ant.amazon.com [205.251.233.111:6028] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.20.168:2525] with esmtp (Farcaster) id 49177a38-027e-4937-ac71-a0e3cb355b67; Thu, 29 Jan 2026 16:39:21 +0000 (UTC) X-Farcaster-Flow-ID: 49177a38-027e-4937-ac71-a0e3cb355b67 Received: from EX19D020UWC004.ant.amazon.com (10.13.138.149) by EX19MTAUWB002.ant.amazon.com (10.250.64.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.35; Thu, 29 Jan 2026 16:39:21 +0000 Received: from [0.0.0.0] (172.19.99.218) by EX19D020UWC004.ant.amazon.com (10.13.138.149) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.35; Thu, 29 Jan 2026 16:39:19 +0000 Message-ID: <3df69121-b4ac-48ce-a26c-5dd3035a3b78@amazon.com> Date: Thu, 29 Jan 2026 17:39:17 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] virtio_ring: Add READ_ONCE annotations for device-writable fields To: Johannes Thumshirn CC: "Michael S. Tsirkin" , Jason Wang , Xuan Zhuo , =?UTF-8?Q?Eugenio_P=C3=A9rez?= , "open list:VIRTIO CORE" , open list References: <20260129121604.745681-1-johannes.thumshirn@wdc.com> Content-Language: en-US From: Alexander Graf In-Reply-To: <20260129121604.745681-1-johannes.thumshirn@wdc.com> X-ClientProxiedBy: EX19D031UWA004.ant.amazon.com (10.13.139.19) To EX19D020UWC004.ant.amazon.com (10.13.138.149) Content-Type: text/plain; charset="utf-8"; format="flowed" Content-Transfer-Encoding: base64 Ck9uIDI5LjAxLjI2IDEzOjE1LCBKb2hhbm5lcyBUaHVtc2hpcm4gd3JvdGU6Cj4gRnJvbTogQWxl eGFuZGVyIEdyYWYgPGdyYWZAYW1hem9uLmNvbT4KPgo+IEtDU0FOIHJlcG9ydHMgZGF0YSByYWNl cyB3aGVuIGFjY2Vzc2luZyB2aXJ0aW8gcmluZyBmaWVsZHMgdGhhdCBhcmUKPiBjb25jdXJyZW50 bHkgd3JpdHRlbiBieSB0aGUgZGV2aWNlIChob3N0KS4gVGhlc2UgYXJlIGxlZ2l0aW1hdGUKPiBj b25jdXJyZW50IGFjY2Vzc2VzIHdoZXJlIHRoZSBDUFUgcmVhZHMgZmllbGRzIHRoYXQgdGhlIGRl dmljZSB1cGRhdGVzCj4gdmlhIERNQS1saWtlIG1lY2hhbmlzbXMuCj4KPiBBZGQgYWNjZXNzb3Ig ZnVuY3Rpb25zIHRoYXQgdXNlIFJFQURfT05DRSgpIHRvIHByb3Blcmx5IGFubm90YXRlIHRoZXNl Cj4gZGV2aWNlLXdyaXRhYmxlIGZpZWxkcyBhbmQgcHJldmVudCBjb21waWxlciBvcHRpbWl6YXRp b25zIHRoYXQgY291bGQgaW4KPiB0aGVvcnkgYnJlYWsgdGhlIGNvZGUuIFRoaXMgYWxzbyBzZXJ2 ZXMgYXMgZG9jdW1lbnRhdGlvbiBzaG93aW5nIHdoaWNoCj4gZmllbGRzIGFyZSBzaGFyZWQgd2l0 aCB0aGUgZGV2aWNlLgo+Cj4gVGhlIGFmZmVjdGVkIGZpZWxkcyBhcmU6Cj4gLSBTcGxpdCByaW5n OiB1c2VkLT5pZHgsIHVzZWQtPnJpbmdbXS5pZCwgdXNlZC0+cmluZ1tdLmxlbgo+IC0gUGFja2Vk IHJpbmc6IGRlc2NbXS5mbGFncywgZGVzY1tdLmlkLCBkZXNjW10ubGVuCgoKUGxlYXNlIGFkZCAi VGhpcyBwYXRjaCB3YXMgcGFydGlhbGx5IHdyaXR0ZW4gdXNpbmcgdGhlIGhlbHAgb2YgS2lybywg YW4gCkFJIGNvZGluZyBhc3Npc3RlbnQsIHRvIGF1dG9tYXRlIHRoZSBtZWNoYW5pY2FsIHdvcmsg b2YgZ2VuZXJhdGluZyB0aGUgCmlubGluZSBmdW5jdGlvbiBkZWZpbml0aW9uLiIKCgpPdGhlcndp c2UgTEdUTSEKClJldmlld2VkLWJ5OiBBbGV4YW5kZXIgR3JhZiA8Z3JhZkBhbWF6b24uY29tPgoK CkFsZXgKCgoKCkFtYXpvbiBXZWIgU2VydmljZXMgRGV2ZWxvcG1lbnQgQ2VudGVyIEdlcm1hbnkg R21iSApUYW1hcmEtRGFuei1TdHIuIDEzCjEwMjQzIEJlcmxpbgpHZXNjaGFlZnRzZnVlaHJ1bmc6 IENocmlzdG9mIEhlbGxtaXMsIEFuZHJlYXMgU3RpZWdlcgpFaW5nZXRyYWdlbiBhbSBBbXRzZ2Vy aWNodCBDaGFybG90dGVuYnVyZyB1bnRlciBIUkIgMjU3NzY0IEIKU2l0ejogQmVybGluClVzdC1J RDogREUgMzY1IDUzOCA1OTcK