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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 4939ACD8C88 for ; Sun, 7 Jun 2026 09:41:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=dQj5Uv7t9KZulzKNARL/h1xIIEJfpiotu+ZxBAIVAjg=; b=vvYBc659Y1C37pePsj8IxftIfj 8rru8DduAxKHLioMFkws17n45SC09M+T5DCMsizOO7HXq5+b3z+ORMYDTbsdtYvL1D50srFvr6uYl 8Vs8eN30pbLXbA5fvUxM7VVOdGh2QNWeOgYwH8iSTN673LqMvAJyiH35a4krhee3afQi3RpLkDsg6 +EpsDe4R3fvi6KLbSNjPMrt/f4Z6WZprGjMWwulVRYPLKgBGldf9vCgvr3N9T4KFRD8X7VnZu76jh 36HLFnnIPNcq14aHlbHSypivpv5ra3nww30OpZWOVsjKr1l+dpsCyYid7StH1dcToW54RgpNX3y8U q1E/wmjQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wWA0A-00000002ArL-3yGN; Sun, 07 Jun 2026 09:41:06 +0000 Received: from tor.source.kernel.org ([172.105.4.254]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wWA09-00000002ArA-45IL; Sun, 07 Jun 2026 09:41:06 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id BDE5660008; Sun, 7 Jun 2026 09:41:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id BA5D21F00893; Sun, 7 Jun 2026 09:41:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1780825264; bh=dQj5Uv7t9KZulzKNARL/h1xIIEJfpiotu+ZxBAIVAjg=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=jxXJyWkYAheaa+HAD8W5RsBp+eg4te2bRDyYEF6DSdeQ1CshV9RPk7PIAzpuVOQZO 7FPxskvJfzH6AI155IUpqWnSrarh9/JsM4RsQO/iQHgxNWt3DX3zDt0Sf9X++xjMUp J/gduDQhC1bGsbB68D05l9hxN7jNWCLYGevAX/rVPZx7O1qAuVnpD9GjgwxHReSmRD 72BAfOCWd35ovJVFebpIFVkNx29DSm/8RHi+gpnbX8cZwlgJVAKpZgfT4GvgpDrC/X Av9yP8PB6oetxT6lEGeVHzh69SggTN9AQ6m+x7TElCkLGvSTsYolN2f+UdzTVDeWfr rqpya3isueNIw== Message-ID: <6d6f0792-2fbb-4985-819c-87fa499da4ce@kernel.org> Date: Sun, 7 Jun 2026 11:40:59 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] nvme-apple: Prevent shared tags across queues on Apple A11 To: Nick Chan , Janne Grunau , Neal Gompa , Keith Busch , Jens Axboe , Christoph Hellwig , Sagi Grimberg Cc: asahi@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org References: <20260607-prevent-tag-collision-t8015-v2-1-dc4ef4fb42bc@gmail.com> Content-Language: en-US From: Sven Peter In-Reply-To: <20260607-prevent-tag-collision-t8015-v2-1-dc4ef4fb42bc@gmail.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 07.06.26 08:10, Nick Chan wrote: > On Apple A11, tags of pending commands must be unique across the admin > and IO queues, else the firmware crashes with > "duplicate tag error for tag N", with N being the tag. > > Apply the existing workaround for M1 of reserving two tags for the admin > queue to A11. > > Cc: stable@vger.kernel.org > Fixes: 04d8ecf37b5e ("nvme: apple: Add Apple A11 support") > Signed-off-by: Nick Chan > --- Reviewed-by: Sven Peter Best, Sven