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=-8.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 18A23C433ED for ; Tue, 13 Apr 2021 02:01:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E6BE16135B for ; Tue, 13 Apr 2021 02:01:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241314AbhDMCCJ (ORCPT ); Mon, 12 Apr 2021 22:02:09 -0400 Received: from mga11.intel.com ([192.55.52.93]:46615 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237219AbhDMCCI (ORCPT ); Mon, 12 Apr 2021 22:02:08 -0400 IronPort-SDR: Nv9uB96KhQeXKrgYWINV//LekphOG3UScw1k24XyLb8OTNQl8SnhUVt89AWB/PpXJDc/aVh8id GM07jt4VBbpQ== X-IronPort-AV: E=McAfee;i="6200,9189,9952"; a="191131410" X-IronPort-AV: E=Sophos;i="5.82,216,1613462400"; d="asc'?scan'208";a="191131410" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Apr 2021 19:01:47 -0700 IronPort-SDR: dpnk/tYDwYO3SVEi7HM2vnrFb6nowJMHhcesGzOnnSfRR6NRFYEwTf0/OwTmkwgzqynM+dJXTU cuhHkS5Ff9hg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.82,216,1613462400"; d="asc'?scan'208";a="443268676" Received: from zhen-hp.sh.intel.com (HELO zhen-hp) ([10.239.160.147]) by fmsmga004.fm.intel.com with ESMTP; 12 Apr 2021 19:01:46 -0700 Date: Tue, 13 Apr 2021 09:43:58 +0800 From: Zhenyu Wang To: Alex Williamson Cc: zhenyuw@linux.intel.com, zhi.a.wang@intel.com, intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, yan.y.zhao@intel.com Subject: Re: Regression: gvt: vgpu 1: MI_LOAD_REGISTER_MEM handler error Message-ID: <20210413014358.GB14309@zhen-hp.sh.intel.com> Reply-To: Zhenyu Wang References: <20210412103214.337d521a@omen> <20210412192347.042fbc14@x1.home.shazbot.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="YiEDa0DAkWCtVeE4" Content-Disposition: inline In-Reply-To: <20210412192347.042fbc14@x1.home.shazbot.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --YiEDa0DAkWCtVeE4 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2021.04.12 19:23:47 -0600, Alex Williamson wrote: > On Mon, 12 Apr 2021 10:32:14 -0600 > Alex Williamson wrote: >=20 > > Running a Windows guest on a i915-GVTg_V4_2 from an HD 5500 IGD on > > v5.12-rc6 results in host logs: > >=20 > > gvt: vgpu 1: lrm access to register (20c0) > > gvt: vgpu 1: MI_LOAD_REGISTER_MEM handler error > > gvt: vgpu 1: cmd parser error > > 0x0=20 > > 0x29=20 > >=20 > > gvt: vgpu 1: scan wa ctx error > > gvt: vgpu 1: failed to submit desc 0 > > gvt: vgpu 1: fail submit workload on ring rcs0 > > gvt: vgpu 1: fail to emulate MMIO write 00002230 len 4 > >=20 > > The guest goes into a boot loop triggering this error before reaching > > the desktop and rebooting. Guest using Intel driver 20.19.15.5171 > > dated 11/4/2020 (from driver file 15.40.5171). > >=20 > > This VM works well with the same guest and userspace software stack on > > Fedora's kernel 5.11.11-200.fc33.x86_64. Thanks, >=20 > Bisected to: Looks we didn't hit this one on Broadwell with recent testing. I'll double check, maybe Broadwell missed something after our cmd parser rework. Thanks for reporting! >=20 > commit f18d417a57438498e0de481d3a0bc900c2b0e057 > Author: Yan Zhao > Date: Wed Dec 23 11:45:08 2020 +0800 >=20 > drm/i915/gvt: filter cmds "srm" and "lrm" in cmd_handler > =20 > do not allow "srm" and "lrm" except for GEN8_L3SQCREG4 and 0x21f0. > =20 > Cc: Colin Xu > Cc: Kevin Tian > Signed-off-by: Yan Zhao > Signed-off-by: Zhenyu Wang > Link: http://patchwork.freedesktop.org/patch/msgid/20201223034508.170= 31-1-yan.y.zhao@intel.com > Reviewed-by: Zhenyu Wang >=20 --YiEDa0DAkWCtVeE4 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQTXuabgHDW6LPt9CICxBBozTXgYJwUCYHT3WgAKCRCxBBozTXgY JyIjAJ4qyEyXGFa1EIPUsVJohueGVLPmjQCeLZxe4LsLldAUVXy+DRZNan125N4= =mNfW -----END PGP SIGNATURE----- --YiEDa0DAkWCtVeE4--