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 7B9DFC4332F for ; Thu, 29 Sep 2022 17:50:53 +0000 (UTC) Received: from localhost ([::1]:52064 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1odxgS-000103-IO for qemu-devel@archiver.kernel.org; Thu, 29 Sep 2022 13:50:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48344) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1odwDL-0005lm-0M for qemu-devel@nongnu.org; Thu, 29 Sep 2022 12:16:43 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:50673) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1odwDH-0008Vi-Ej for qemu-devel@nongnu.org; Thu, 29 Sep 2022 12:16:41 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1664468198; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=SK8jnl25GfBurW867juBk8Hvi+Y8sy3LVuiGjVel2EA=; b=F4Jv+4lt1BjkwBzSD/C2MEZ28gEhAcJeLaPT4XNwfnq0+1Cw+sfoKuIX37PRimghQovoEc TxOw7YtFDyx4yMfnFMnHW5wALwssxgPD2SrjwsMvXUrjkm+177aShXei6oKgJnCbjtQYk4 pxXvhqSU+QgSaP9tok+6rPCAAQPYxg8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-590-tWxvPbKKOv-UAw5fd6zNXg-1; Thu, 29 Sep 2022 12:16:32 -0400 X-MC-Unique: tWxvPbKKOv-UAw5fd6zNXg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.rdu2.redhat.com [10.11.54.7]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D5441868A2E; Thu, 29 Sep 2022 16:16:31 +0000 (UTC) Received: from starship (unknown [10.40.193.233]) by smtp.corp.redhat.com (Postfix) with ESMTP id 33A50140EBF4; Thu, 29 Sep 2022 16:16:30 +0000 (UTC) Message-ID: Subject: Re: Commit 'iomap: add support for dma aligned direct-io' causes qemu/KVM boot failures From: Maxim Levitsky To: Keith Busch Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Christoph Hellwig , qemu-devel@nongnu.org, kvm@vger.kernel.org Date: Thu, 29 Sep 2022 19:16:29 +0300 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" User-Agent: Evolution 3.36.5 (3.36.5-2.fc32) MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 3.1 on 10.11.54.7 Received-SPF: pass client-ip=170.10.133.124; envelope-from=mlevitsk@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.08, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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" On Thu, 2022-09-29 at 09:48 -0600, Keith Busch wrote: > I am aware, and I've submitted the fix to qemu here: > > https://lists.nongnu.org/archive/html/qemu-block/2022-09/msg00398.html > Thanks for quick response! Question is though, isn't this an kernel ABI breakage? (I myself don't care, I would be happy to patch my qemu), but I afraid that this will break *lots* of users that only updated the kernel and not the qemu. What do you think? Best regards, Maxim Levitsky