Received: by 10.192.165.148 with SMTP id m20csp677753imm; Wed, 2 May 2018 07:06:31 -0700 (PDT) X-Google-Smtp-Source: AB8JxZr2QM28wKIwHDQQGMbYXCEruXOhMRrQBixxw8Wsy8csMrObLgTLVpi1pDaOFUQX7argJFiQ X-Received: by 2002:a17:902:d913:: with SMTP id c19-v6mr19833946plz.229.1525269991666; Wed, 02 May 2018 07:06:31 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1525269991; cv=none; d=google.com; s=arc-20160816; b=qsy2JZqHDCPCwCn1CRxnMkbBpe15Y1FE1kHrB0NFj/ViPREKBIx6foouffwu+mJary 3It44/Ji61sUY9cZqG5yf7cKRKzbqjDftM8B6XUMHec3/EzimGrsDiyqeKij52N9igIt PvDKf+Ua+5vtrJeCsspluLVhcbU6ghLx5Bz8PhBvjC+fWP6P9k6WlAW+aiP2HmB5UR5g Sswj+bNMANeYFcXCiOvexj584Ia2g9PHEqWNw4vUSqtYeHh3MjPvbtSTptBYC2Na/LX+ lXoa6T3a3UhpRJDBade779GAROuHryfg6rO86pDPLniSeIhW+DmfFpZIbRoSzUl9LBv3 mFFw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:from:subject:cc:to:message-id:date :arc-authentication-results; bh=RU59ecLZs1e6b9oXYTJVArDjHTsKWccsOkdk1EdrG+Y=; b=sbzf9Ms5mBM1+HM+3qlK2phprOFp2op1Ra+EwninlITMibM1RFqkoh4xoJ6px5RjAG a5nHlL3LYH90lvWlAYELq1ZS4c5BtgtfTn5iYVKjOWZPFKTsX9W0qDmhH2l6yUSWn5Nc VZSp6MtkBjX7TX3y8Dq/PpmTgnZ9Os4HU6EPm/AbBtnnkwD8W4715Be5iuc6f0jJcXP/ mKbieiQOkyLkH+PNsNFb705MJmfnsU69p35K4a5p9GiGt6I+6kTlDZz145rdvzfbIR3H UoWnPb0X77dP3P2Y++CipTfu/872Mn9HjErMr3YIgHUpozNZcvmPJwerv5BTRjXN6nPV xz7Q== 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 n4si11319791pfa.66.2018.05.02.07.06.16; Wed, 02 May 2018 07:06:31 -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 S1751317AbeEBOEw (ORCPT + 99 others); Wed, 2 May 2018 10:04:52 -0400 Received: from shards.monkeyblade.net ([184.105.139.130]:60270 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750800AbeEBOEu (ORCPT ); Wed, 2 May 2018 10:04:50 -0400 Received: from localhost (67.110.78.66.ptr.us.xo.net [67.110.78.66]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) (Authenticated sender: davem-davemloft) by shards.monkeyblade.net (Postfix) with ESMTPSA id 30FD813416B8C; Wed, 2 May 2018 07:04:49 -0700 (PDT) Date: Wed, 02 May 2018 10:04:46 -0400 (EDT) Message-Id: <20180502.100446.106883595468297057.davem@davemloft.net> To: mst@redhat.com Cc: kevin@guarana.org, 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 From: David Miller In-Reply-To: <20180502162932-mutt-send-email-mst@kernel.org> References: <20180501.140551.1944561534446599966.davem@davemloft.net> <20180502062809.GA14485@la.guarana.org> <20180502162932-mutt-send-email-mst@kernel.org> X-Mailer: Mew version 6.7 on Emacs 25.3 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.12 (shards.monkeyblade.net [149.20.54.216]); Wed, 02 May 2018 07:04:49 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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.