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 AF22EEB8FCD for ; Wed, 6 Sep 2023 13:08:33 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qdsGA-00074l-6K; Wed, 06 Sep 2023 09:07:55 -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 1qdsFx-00072X-FB for qemu-devel@nongnu.org; Wed, 06 Sep 2023 09:07:41 -0400 Received: from out-228.mta0.migadu.com ([91.218.175.228]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qdsFt-0003jc-HK for qemu-devel@nongnu.org; Wed, 06 Sep 2023 09:07:41 -0400 Message-ID: <5e6b1bbd-bc0a-cff5-119c-639a9d15e72a@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1694005649; 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=IGoDnKeHLbn6LihaQjYmsdl+qed6fld3ewWmJXgDQDU=; b=xa084eLAUybsKxGSZqgPfzGKgn30InWq1ZMFDYcOHLf7JVDhr74CnZnDqTaxo/XVhmOTZw 07mKD8SjLlIBHr3n7KO5VYB06CUz5CV/7jElBYg+dnb1qMccnOY/3d5AZIjjcTQjxRUvRE 41W9qWxSxddUwzkzS2a7G/zUWErcZ74= Date: Wed, 6 Sep 2023 21:07:16 +0800 MIME-Version: 1.0 Subject: Re: [Virtio-fs] Status of DAX for virtio-fs/virtiofsd? Content-Language: en-US To: Stefan Hajnoczi , =?UTF-8?Q?Alex_Benn=c3=a9e?= Cc: virtio-fs@redhat.com, Erik Schilling , QEMU Developers , Stefan Hajnoczi , Vivek Goyal References: <87v8grlzu9.fsf@linaro.org> X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Hao Xu In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Received-SPF: pass client-ip=91.218.175.228; envelope-from=hao.xu@linux.dev; helo=out-228.mta0.migadu.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, 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-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 5/18/23 00:26, Stefan Hajnoczi wrote: > On Wed, 17 May 2023 at 11:54, Alex Bennée wrote: > Hi Alex, > There were two unresolved issues: > > 1. How to inject SIGBUS when the guest accesses a page that's beyond > the end-of-file. Hi Stefan, Does this SIGBUS issue exist if the guest kernel can be trusted? Since in that case, we can check the offset value in guest kernel. Thanks, Hao