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=-5.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 67506C4363C for ; Mon, 12 Apr 2021 16:48:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 55C0361356 for ; Mon, 12 Apr 2021 16:48:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344235AbhDLQpN (ORCPT ); Mon, 12 Apr 2021 12:45:13 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:60477 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S244184AbhDLQck (ORCPT ); Mon, 12 Apr 2021 12:32:40 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1618245141; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=KLSeyjnN+Nc0bGTYt65N2Vzxd1h3fZ8Uio7k1E2dBH0=; b=hpVCzwXxsbwjvaKILYEQ8foI3GouSOMJwar4LNwkZ2Nm2i3IepJbCra5l95TXcdzoJ4jaO EfL+BDvc1W6dpllaBHRaYecH246bHHq+rs8id7dETjqahBbCyMJtLOVY22zgHrFqmGh9/S vISCUfK32QIU8+F3l/oubwdfEC4Ffk0= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-141-rzmZgZcxOXKp6oDTt5Yv7Q-1; Mon, 12 Apr 2021 12:32:17 -0400 X-MC-Unique: rzmZgZcxOXKp6oDTt5Yv7Q-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id D972F6D241; Mon, 12 Apr 2021 16:32:15 +0000 (UTC) Received: from omen (ovpn-117-254.rdu2.redhat.com [10.10.117.254]) by smtp.corp.redhat.com (Postfix) with ESMTP id 13A0010023AB; Mon, 12 Apr 2021 16:32:14 +0000 (UTC) Date: Mon, 12 Apr 2021 10:32:14 -0600 From: Alex Williamson To: zhenyuw@linux.intel.com, zhi.a.wang@intel.com Cc: intel-gvt-dev@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, Subject: Regression: gvt: vgpu 1: MI_LOAD_REGISTER_MEM handler error Message-ID: <20210412103214.337d521a@omen> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Running a Windows guest on a i915-GVTg_V4_2 from an HD 5500 IGD on v5.12-rc6 results in host logs: gvt: vgpu 1: lrm access to register (20c0) gvt: vgpu 1: MI_LOAD_REGISTER_MEM handler error gvt: vgpu 1: cmd parser error 0x0 0x29 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 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). This VM works well with the same guest and userspace software stack on Fedora's kernel 5.11.11-200.fc33.x86_64. Thanks, Alex