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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 52520C47404 for ; Wed, 9 Oct 2019 13:16:50 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 260F7206B6 for ; Wed, 9 Oct 2019 13:16:50 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="RZx/O7qM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731298AbfJINQs (ORCPT ); Wed, 9 Oct 2019 09:16:48 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:41904 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730490AbfJINQs (ORCPT ); Wed, 9 Oct 2019 09:16:48 -0400 Received: by mail-wr1-f66.google.com with SMTP id q9so2942296wrm.8; Wed, 09 Oct 2019 06:16:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=NqNWhKNuCxFUkqS6MSW/V4hcC4NeZ3p7cRwpDVaRvJU=; b=RZx/O7qMfkNbDIazZ56VS7ESeE2Z2sLtUueTWwQkf7SSsC3l8tYZzyA/zENcCZu5V7 Xkh5tMeMIroML0fjI/u88dqhMAER0sSvU2/NZO4s6hWZKWwoQHR7H5d2jVhAZBQ9JUE9 k/d5jIxtHEdcwfxQpVJ7gse++fkOhKrysRGRuqQt8IkMF5MTz6nw6t/sknS82VcWmxOU /5+z1EGFMKdlCbKg8etnls7MfwpreLW+oMaVAikKJ4E5EdYIYjKbZHXlmso3VgwUVcoL 2WVVAuIWPrvNdUcvDa+bC7yRb6Em2jU09II/RlPt9E5r4uJ9kOc68WKqTw2iL3hG4tee nU8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=NqNWhKNuCxFUkqS6MSW/V4hcC4NeZ3p7cRwpDVaRvJU=; b=eN+ETgUgEuZsbC28moWVT7hblRRIEmDN8xqZj0/HkySzt4c+z6hg6/MdBHC2Ll4tYx UeTZTLxeE2V1ZSx/cKKdIszz3AUv3/2ZvRmrFuBdhCcw05R04xFU1cOGFW8N9zoosyVi tKE5/lsymtxqEquTW8rJhfUhYl9T46rxLDjBVn4mk4ZgMaau4JzuRsFUNZH7N7OPplzC QQ1W32OSq/lUxbibSstOc02o+kt67GhjTht/J7Ohx+Jiufe8hFFBeKDI+nEv+h7MfHFw /5b0SSwNn8KLiXdZxdE4bYqaQ1s+1ypRV2wIw3A9bD8TnygOBFDKvV8TyAbs2anLrbE0 L/Mg== X-Gm-Message-State: APjAAAXN0Gcbm3UbHZGAG55TmjKSThP41wKSq7KkFBtpsHk8W+82XFp/ B2yS9PFyxaMnMINlSdmo1qIAFMB2MLM= X-Google-Smtp-Source: APXvYqynU7qFd7yDda1viaOJp3TtU+OF6WkbTnfJ4JhjvUDrcR6isTKKdN0nskgcBotiInIqXq9Pgw== X-Received: by 2002:a5d:6ad0:: with SMTP id u16mr2810067wrw.313.1570627005754; Wed, 09 Oct 2019 06:16:45 -0700 (PDT) Received: from localhost ([51.15.41.238]) by smtp.gmail.com with ESMTPSA id z9sm2771325wrl.35.2019.10.09.06.16.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Oct 2019 06:16:44 -0700 (PDT) Date: Wed, 9 Oct 2019 14:16:43 +0100 From: Stefan Hajnoczi To: Stefano Garzarella Cc: netdev@vger.kernel.org, Sasha Levin , linux-hyperv@vger.kernel.org, Stephen Hemminger , kvm@vger.kernel.org, "Michael S. Tsirkin" , Dexuan Cui , Haiyang Zhang , linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, Stefan Hajnoczi , "David S. Miller" , Jorgen Hansen Subject: Re: [RFC PATCH 11/13] vsock: add 'transport_hg' to handle g2h\h2g transports Message-ID: <20191009131643.GL5747@stefanha-x1.localdomain> References: <20190927112703.17745-1-sgarzare@redhat.com> <20190927112703.17745-12-sgarzare@redhat.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="1hKfHPzOXWu1rh0v" Content-Disposition: inline In-Reply-To: <20190927112703.17745-12-sgarzare@redhat.com> User-Agent: Mutt/1.12.1 (2019-06-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --1hKfHPzOXWu1rh0v Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Sep 27, 2019 at 01:27:01PM +0200, Stefano Garzarella wrote: > VMCI transport provides both g2h and h2g behaviors in a single > transport. > We are able to set (or not) the g2h behavior, detecting if we > are in a VMware guest (or not), but the h2g feature is always set. > This prevents to load other h2g transports while we are in a > VMware guest. In the vhost_vsock.ko case we only register the h2g transport when userspace has loaded the module (by opening /dev/vhost-vsock). VMCI has something kind of similar: /dev/vmci and the vmci_host_active_users counter. Maybe we can use this instead of introducing the transport_hg concept? --1hKfHPzOXWu1rh0v Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAl2d3bsACgkQnKSrs4Gr c8iGmQf8CrTUBmiSd3MH3EamjJ8bZk3tA9Ej+1ywL//u+F4Qx3lKOoX+rWnMK5O0 pkoMAUGpvkKpC23xoV8gFfS9jtRax71aGCjFHnCDj6AoIOu/EwdqWTN28DjF0pF/ v2D3y2FJtItZeyB2JxnV/ouq9wnglcYDXuvVzwlIGvQi7cV2pj4TyVUzo55Qbtqb +pbmGCQ845YsfBrmNGA28L7r7OiGp0XCXkrNiTpmgBvQpkUiYg5sKxbWZQj13dKU UMBAQV8O4rNjJuEW/9oGehzTzq7JqwiA0TPRGlqkdfovgqA3m0dvSAVbZm/D74al Y7NuoOX5k8zZlatP7hk+KQoph/MKrg== =Wk8M -----END PGP SIGNATURE----- --1hKfHPzOXWu1rh0v--