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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 66247C433F5 for ; Wed, 30 Mar 2022 13:14:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237486AbiC3NQY (ORCPT ); Wed, 30 Mar 2022 09:16:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233195AbiC3NQY (ORCPT ); Wed, 30 Mar 2022 09:16:24 -0400 Received: from mail-oa1-x29.google.com (mail-oa1-x29.google.com [IPv6:2001:4860:4864:20::29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 79B25220EC; Wed, 30 Mar 2022 06:14:39 -0700 (PDT) Received: by mail-oa1-x29.google.com with SMTP id 586e51a60fabf-df0940c4eeso8545532fac.8; Wed, 30 Mar 2022 06:14:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=1nMim+eDxDf/5PKoFQWnd0bc2gDZtzpNJd3Is7aeZY4=; b=OO5qym66qk0XlxKttsyfA46hGzSbNVjvrT/LxJlPEiiqAz4AOlcErzm1ffT2k8o7B8 307OYsfFOYzDkF/kiz6EcRTBnGTWAgeCDdfnAU/EdCSMlrhOaZqmo6eOAVojefshckW8 ndlDVekcZ9riKZweXxxyTUmP2zQFfc8uFG+7aLJm5Td3z4ZLEH/S5PTpGFT4BuI3fWNa SV86A1+K0q2lgb4oxXG3dEzPkkarlR+K8+VudDymSYFvjfBUr25FQufpE4iv+Z5O7/LG DtKFfqdbLu/ZcIyJjMSWXwa8jnYTwmhMf97Be1YIgeptlIyx9apeyjB7LpmQEMt0jsa8 9Fnw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=1nMim+eDxDf/5PKoFQWnd0bc2gDZtzpNJd3Is7aeZY4=; b=UyiOG3TzgRSOngPCMjb4jPqJatL6hlJOpvYAOLvapn/Rh2Abt96Ew3gHyieXhZvnQJ 3UbC3vpmzwTDPcsXi1gN8tVUaE5Cvj452znVH8W1PwpVQ0J5y0K9+8l3vU8wZ24jstK0 ZVRVdFRrPe2iVVvF98ga+b5vAjm5S6ErXJg59p0xQTv0y6htp0W2s7xinWKzgtalsOP3 X/IWknKwEZBSKX4X59SiJhhkd5P2vwrVc3x7t5M7FT2fX4iziTButtjm+Aw/vjXKHDe6 +++444/1KA+xrKRdzbE1K20OaxbrCsRa7mp3b3LyHgZp6sN6MeBAcBOc7NVJualN444e gDeg== X-Gm-Message-State: AOAM531//gIrKkJ5QBhVHXq8L4sinvfLGw7Da6V4WlZfJEV8uy9lxfTD 8Q3ZG96zJZGoJWjr+bVAzuB09EDTSrGigjBUNA0= X-Google-Smtp-Source: ABdhPJxjFqw1iL+mE7nQo5TNi+cZ3oFVY7P5u/Ty0k4rd+2f0SFlkNu4vS/GbISpH8YqSLOOLjyeWPP6F1006rYG4GI= X-Received: by 2002:a05:6870:c154:b0:dd:986c:afa9 with SMTP id g20-20020a056870c15400b000dd986cafa9mr2052493oad.160.1648646078446; Wed, 30 Mar 2022 06:14:38 -0700 (PDT) MIME-Version: 1.0 References: <20220308152105.309618-18-joshi.k@samsung.com> <20220310083652.GF26614@lst.de> <20220310141945.GA890@lst.de> <20220311062710.GA17232@lst.de> <20220324063218.GC12660@lst.de> <20220325133921.GA13818@test-zns> <20220330130219.GB1938@lst.de> In-Reply-To: <20220330130219.GB1938@lst.de> From: Kanchan Joshi Date: Wed, 30 Mar 2022 18:44:12 +0530 Message-ID: Subject: Re: [PATCH 17/17] nvme: enable non-inline passthru commands To: Christoph Hellwig Cc: Kanchan Joshi , Jens Axboe , Keith Busch , Pavel Begunkov , io-uring@vger.kernel.org, linux-nvme@lists.infradead.org, linux-block@vger.kernel.org, sbates@raithlin.com, logang@deltatee.com, Pankaj Raghav , =?UTF-8?Q?Javier_Gonz=C3=A1lez?= , Luis Chamberlain , Adam Manzanares , Anuj Gupta Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On Wed, Mar 30, 2022 at 6:32 PM Christoph Hellwig wrote: > > On Fri, Mar 25, 2022 at 07:09:21PM +0530, Kanchan Joshi wrote: > > Ok. If you are open to take new opcode/struct route, that is all we > > require to pair with big-sqe and have this sorted. How about this - > > I would much, much, much prefer to support a bigger CQE. Having > a pointer in there just creates a fair amount of overhead and > really does not fit into the model nvme and io_uring use. Sure, will post the code with bigger-cqe first. > But yes, if we did not go down that route that would be the structure > that is needed. Got it. Thanks for confirming.