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=-8.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_MUTT autolearn=ham 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 5BAD4C07542 for ; Mon, 27 May 2019 09:09:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2EC7F21734 for ; Mon, 27 May 2019 09:09:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726786AbfE0JI7 (ORCPT ); Mon, 27 May 2019 05:08:59 -0400 Received: from mga01.intel.com ([192.55.52.88]:58675 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726653AbfE0JI7 (ORCPT ); Mon, 27 May 2019 05:08:59 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 27 May 2019 02:08:58 -0700 X-ExtLoop1: 1 Received: from zhen-hp.sh.intel.com (HELO zhen-hp) ([10.239.13.116]) by orsmga004.jf.intel.com with ESMTP; 27 May 2019 02:08:55 -0700 Date: Mon, 27 May 2019 17:07:41 +0800 From: Zhenyu Wang To: Tina Zhang Cc: intel-gvt-dev@lists.freedesktop.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, kraxel@redhat.com, zhenyuw@linux.intel.com, alex.williamson@redhat.com, hang.yuan@intel.com, zhiyuan.lv@intel.com Subject: Re: [PATCH 1/2] vfio: ABI for setting mdev display flip eventfd Message-ID: <20190527090741.GE29553@zhen-hp.sh.intel.com> Reply-To: Zhenyu Wang References: <20190527084312.8872-1-tina.zhang@intel.com> <20190527084312.8872-2-tina.zhang@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="hOcCNbCCxyk/YU74" Content-Disposition: inline In-Reply-To: <20190527084312.8872-2-tina.zhang@intel.com> User-Agent: Mutt/1.10.0 (2018-05-17) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --hOcCNbCCxyk/YU74 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2019.05.27 16:43:11 +0800, Tina Zhang wrote: > Add VFIO_DEVICE_SET_GFX_FLIP_EVENTFD ioctl command to set eventfd > based signaling mechanism to deliver vGPU framebuffer page flip > event to userspace. > Should we add probe to see if driver can support gfx flip event? > Signed-off-by: Tina Zhang > --- > include/uapi/linux/vfio.h | 12 ++++++++++++ > 1 file changed, 12 insertions(+) >=20 > diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h > index 02bb7ad6e986..27300597717f 100644 > --- a/include/uapi/linux/vfio.h > +++ b/include/uapi/linux/vfio.h > @@ -696,6 +696,18 @@ struct vfio_device_ioeventfd { > =20 > #define VFIO_DEVICE_IOEVENTFD _IO(VFIO_TYPE, VFIO_BASE + 16) > =20 > +/** > + * VFIO_DEVICE_SET_GFX_FLIP_EVENTFD - _IOW(VFIO_TYPE, VFIO_BASE + 17, __= s32) > + * > + * Set eventfd based signaling mechanism to deliver vGPU framebuffer page > + * flip event to userspace. A value of -1 is used to stop the page flip > + * delivering. > + * > + * Return: 0 on success, -errno on failure. > + */ > + > +#define VFIO_DEVICE_SET_GFX_FLIP_EVENTFD _IO(VFIO_TYPE, VFIO_BASE + 17) > + > /* -------- API for Type1 VFIO IOMMU -------- */ > =20 > /** > --=20 > 2.17.1 >=20 --=20 Open Source Technology Center, Intel ltd. $gpg --keyserver wwwkeys.pgp.net --recv-keys 4D781827 --hOcCNbCCxyk/YU74 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQTXuabgHDW6LPt9CICxBBozTXgYJwUCXOuo3QAKCRCxBBozTXgY J7/dAJ9QLbQBdhMMbxjTKO1yebnD51NVUACcDHl7pOknebyQxRlI1LrDOuZu7Kw= =g5+1 -----END PGP SIGNATURE----- --hOcCNbCCxyk/YU74--