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 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 D6201FB5EAD for ; Tue, 17 Mar 2026 14:44:03 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1w2VeC-0008GJ-CE; Tue, 17 Mar 2026 10:43:52 -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 1w2Ve0-0008EJ-Rk; Tue, 17 Mar 2026 10:43:45 -0400 Received: from sea.source.kernel.org ([172.234.252.31]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1w2Vdy-0001Wr-LY; Tue, 17 Mar 2026 10:43:40 -0400 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 42E8343C5C; Tue, 17 Mar 2026 14:43:20 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B450AC4CEF7; Tue, 17 Mar 2026 14:43:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773758600; bh=RZsNYxV2xPVAYbu8DJL1kdvHKgawd2EITYzU6G2thrY=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=qb7oNemWWHyj7bn0j2FiQT8YBlcjkFsghvdoujMDnuMLNmNfb+/gToygT6UUCiKSt HNmMDhK1OKjCTxrw59sa0llh1mxNMJA7iBP0AtbIXGMAeiOkR/syyZtQ+VDMq/+/uX M50Fa73Gkd56a+RZnMNQy91+VW/6FSdkNmVOo26cF1xXOKx3kOJ54R9XdqBq3XTICP Ips/c8zR/iZM/cw6b4QDqK4zcYJYzsiMeMSiSJyKhczLojygXDGCRqUm/6J+IJR08H 2ofgWP/bUsaluPgF7uXfMrfhIkmcsbywW03mUdlwHgwEa9belY0q+NdetE+JbSGNpp fTnO9h6u4lwBg== Date: Tue, 17 Mar 2026 08:43:17 -0600 From: Keith Busch To: Klaus Jensen Cc: qemu-devel@nongnu.org, Paolo Bonzini , Peter Xu , Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= , Jesper Devantier , qemu-block@nongnu.org, Klaus Jensen Subject: Re: [PATCH RFC 0/2] hw/nvme: support mdts above 9 Message-ID: References: <20260317-lift-iovmax-dma-limit-v1-0-38729170683f@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260317-lift-iovmax-dma-limit-v1-0-38729170683f@samsung.com> Received-SPF: pass client-ip=172.234.252.31; envelope-from=kbusch@kernel.org; helo=sea.source.kernel.org X-Spam_score_int: -3 X-Spam_score: -0.4 X-Spam_bar: / X-Spam_report: (-0.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.819, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.903, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: qemu development 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 On Tue, Mar 17, 2026 at 09:48:56AM +0100, Klaus Jensen wrote: > In commit 53493c1f836f ("hw/nvme: cap MDTS value for internal > limitation"), the max value of MDTS was restricted to ensure that the > device will not report internal device errors when hitting the internal > IOV_MAX limit of the block layer. > > This series attempts to lift the IOV_MAX restrictions, by splitting I/O > in the dma helpers. Nice, this was simpler than I thought! Looks good to me: Acked-by: Keith Busch