Received: by 10.192.165.148 with SMTP id m20csp715499imm; Wed, 2 May 2018 07:41:54 -0700 (PDT) X-Google-Smtp-Source: AB8JxZpzpT+vYhkP8/QJJVyGuyL04V3yxKGVDgfMHu8YjGI7od4Sk9OQMCRur4KEhlVlWVJxgEWk X-Received: by 10.98.204.8 with SMTP id a8mr19530465pfg.219.1525272114876; Wed, 02 May 2018 07:41:54 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1525272114; cv=none; d=google.com; s=arc-20160816; b=wCLiJOkJA9UtCa3ZSJSUNr9qtahojnlBnIYzFoKOONyP2YxqfNv2IEQJUX89LSfwdG uxdERUDUo1RA0TIavy2soHFxRX32L947oy/MLmMEg24XeN5fq6Sa2hG7X5R5Ln17I3bx F33WcLjImYcPghVUM5MzmpTpWlrb3gn/7oEvhrdegn1ZwLc9yKiP2KsQVlnk6PeBgEdC p+jC0elipICNvXPft0WPydZSMvueJeGf2AQBudUTpZaMdJQXinYAodgCrHeIJvqeP7aO 4k7d32gUurMVzU/Ve0xyXvdhLJXW/rT6aRrLuNTv5kluZ4SggyZGDBtWMwi0m5W9LnL3 bYyA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:user-agent:in-reply-to :content-disposition:mime-version:references:message-id:subject:cc :to:from:date:arc-authentication-results; bh=VWCh0WtMqSuOmJS0Ghr79YNr6tEjR9kho0Ia6kUlG8w=; b=LZr2ytBTFsYX89lRvjuBkQRKLjqtDy4kKqlPdd/ZRiJ/wV4jeUOZ8UNRN47oJn2aRE sQqihiBw84ypHQrVlq94iRhkfAedhkjCnBKkwvTFXJgmMO+EogcYs6CokkUWcmnTM15j 0HvGQ/sV37CeYg8vsLVk+17TbfGIL9Dc3vQj3Ob+VJPQ4R9Cv/pULebx4fmzF7+P+HG1 A1NsgtJqvSqZTvwMiKMppvu5p09VKOIhxnJeLjjUhXjKCup0xI3BOZ9pKZvqoxLgFwB1 OR0kgOJ8cZJSRXp4xL+BEu8aJByX4mlubF/4ghIDrIpOYL77stc9DvKKM4rIc3kia3Oe NNmA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id p1-v6si11523867plo.128.2018.05.02.07.41.40; Wed, 02 May 2018 07:41:54 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751630AbeEBOkT (ORCPT + 99 others); Wed, 2 May 2018 10:40:19 -0400 Received: from la.guarana.org ([173.254.219.205]:47710 "EHLO la.guarana.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751175AbeEBOkR (ORCPT ); Wed, 2 May 2018 10:40:17 -0400 Received: by la.guarana.org (Postfix, from userid 1006) id 44C333461976; Wed, 2 May 2018 10:40:15 -0400 (EDT) Date: Wed, 2 May 2018 10:40:15 -0400 From: Kevin Easton To: "Michael S. Tsirkin" Cc: David Miller , linux-kernel@vger.kernel.org, jasowang@redhat.com, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org Subject: Re: [PATCH] vhost: make msg padding explicit Message-ID: <20180502144015.GA18389@la.guarana.org> References: <20180501.140551.1944561534446599966.davem@davemloft.net> <20180502062809.GA14485@la.guarana.org> <20180502162932-mutt-send-email-mst@kernel.org> <20180502.100446.106883595468297057.davem@davemloft.net> <20180502171909-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180502171909-mutt-send-email-mst@kernel.org> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 02, 2018 at 05:19:27PM +0300, Michael S. Tsirkin wrote: > On Wed, May 02, 2018 at 10:04:46AM -0400, David Miller wrote: > > From: "Michael S. Tsirkin" > > Date: Wed, 2 May 2018 16:36:37 +0300 > > > > > Ouch. True - and in particular the 32 bit ABI on 64 bit kernels doesn't > > > work at all. Hmm. It's relatively new and maybe there aren't any 32 bit > > > users yet. Thoughts? > > > > If it's been in a released kernel version, we really aren't at liberty > > to play "maybe nobody uses this" UAPI changing games. > > > > Please send me a revert. > > Sent. Looking at compat mess now. Just naming the padding field isn't sufficient anyway, there also needs to be code in vhost_new_msg() to initialise it using the name. - Kevin