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=-6.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 AF336C433DF for ; Thu, 15 Oct 2020 13:10:17 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 23E8B22267 for ; Thu, 15 Oct 2020 13:10:16 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="DQ8Z1Xjo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 23E8B22267 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=citrix.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3868A6E157; Thu, 15 Oct 2020 13:10:16 +0000 (UTC) X-Greylist: delayed 426 seconds by postgrey-1.36 at gabe; Wed, 14 Oct 2020 19:44:19 UTC Received: from esa1.hc3370-68.iphmx.com (esa1.hc3370-68.iphmx.com [216.71.145.142]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9BF846EB42 for ; Wed, 14 Oct 2020 19:44:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1602704660; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=1NquZVhKtHgIfSXsdXr9x93CbiYIcEFDLKC5Qh1YrSE=; b=DQ8Z1XjolWcbFRlV9NjrQGVprA/s1k4IuB+s0HZ5I9mSCbWpDD/rXclz Fvmf4+ljQ/w66wBvbVSe1ozUQb0eswMMVJR12eK9vspbFTXab4giBKhTY fSQWjyURcT2w0LEouCmZHh70l8iRjJokYwiiefi5nVpchrSq6svXo5H08 w=; Authentication-Results: esa1.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: bNF8p36IWhINFjAdplWDNjC82HQGJ6T8P9UbrPg5fzoF5Xgs/BfMZs0U8j4V310+KGmyMNy+Pg oVvIXPELkru50vfUzuSMbMp8EiD/TP1QpNU1xhQZJRl6fLht9x+e7rdUL6rinuoIv+AxUZ8W99 ffbKxuBvbCNIkVgPWLcSreojgAsqabHuhXMxm68GF9n9JWcKnFK+UXb8/uKOBhrYUB6JV6qOxP mtjGdMbN0h1lazGpmokmxrUhIo+9L49JhyP4AenCXqrY6xAqDTp5pT2tBOO6t8iwwJ+4PZ6tAn K88= X-SBRS: 2.5 X-MesageID: 29351929 X-Ironport-Server: esa1.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.77,375,1596513600"; d="scan'208";a="29351929" To: Jason Andryuk , , xen-devel References: From: Andrew Cooper Message-ID: <1a3b90f4-564e-84d3-fd6a-3454e8753579@citrix.com> Date: Wed, 14 Oct 2020 20:37:06 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Language: en-GB X-ClientProxiedBy: AMSPEX02CAS02.citrite.net (10.69.22.113) To FTLPEX02CL05.citrite.net (10.13.108.178) X-Mailman-Approved-At: Thu, 15 Oct 2020 13:10:15 +0000 Subject: Re: [Intel-gfx] i915 dma faults on Xen X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" T24gMTQvMTAvMjAyMCAyMDoyOCwgSmFzb24gQW5kcnl1ayB3cm90ZToKPiBIaSwKPgo+IEJ1ZyBv cGVuZWQgYXQgaHR0cHM6Ly9naXRsYWIuZnJlZWRlc2t0b3Aub3JnL2RybS9pbnRlbC8tL2lzc3Vl cy8yNTc2Cj4KPiBJJ20gc2VlaW5nIERNQSBmYXVsdHMgZm9yIHRoZSBpOTE1IGdyYXBoaWNzIGhh cmR3YXJlIG9uIGEgRGVsbAo+IExhdGl0dWRlIDU1MDAuIFRoZXNlIHdlcmUgY2FwdHVyZWQgd2hl biBJIHBsdWdnZWQgaW50byBhIERlbGwKPiBUaHVuZGVyYm9sdCBkb2NrIHdpdGggdHdvIERpc3Bs YXlQb3J0IG1vbml0b3JzIGF0dGFjaGVkLiAgWGVuIDQuMTIuNAo+IHN0YWdpbmcgYW5kIExpbnV4 IDUuNC43MCAoYW5kIHNvbWUgZWFybGllciB2ZXJzaW9ucykuCj4KPiBPY3QgMTQgMTg6NDE6NDku MDU2NDkwIGtlcm5lbDpbICAgODUuNTcwMzQ3XSBbZHJtOmdlbjhfZGVfaXJxX2hhbmRsZXIKPiBb aTkxNV1dICpFUlJPUiogRmF1bHQgZXJyb3JzIG9uIHBpcGUgQTogMHgwMDAwMDA4MAo+IE9jdCAx NCAxODo0MTo0OS4wNTY0OTQga2VybmVsOlsgICA4NS41NzAzOTVdIFtkcm06Z2VuOF9kZV9pcnFf aGFuZGxlcgo+IFtpOTE1XV0gKkVSUk9SKiBGYXVsdCBlcnJvcnMgb24gcGlwZSBBOiAweDAwMDAw MDgwCj4gT2N0IDE0IDE4OjQxOjQ5LjA1NjU4OSBWTSBoeXBlcnZpc29yOiAoWEVOKSBbVlQtRF1E TUFSOltETUEgUmVhZF0KPiBSZXF1ZXN0IGRldmljZSBbMDAwMDowMDowMi4wXSBmYXVsdCBhZGRy IDM5YjU4NDUwMDAsIGlvbW11IHJlZyA9Cj4gZmZmZjgyYzAwMDIxZDAwMAo+IE9jdCAxNCAxODo0 MTo0OS4wNTY1OTQgVk0gaHlwZXJ2aXNvcjogKFhFTikgW1ZULURdRE1BUjogcmVhc29uIDA2IC0K PiBQVEUgUmVhZCBhY2Nlc3MgaXMgbm90IHNldAo+IE9jdCAxNCAxODo0MTo0OS4wNTY3ODQga2Vy bmVsOlsgICA4NS41NzA2NjhdIFtkcm06Z2VuOF9kZV9pcnFfaGFuZGxlcgo+IFtpOTE1XV0gKkVS Uk9SKiBGYXVsdCBlcnJvcnMgb24gcGlwZSBBOiAweDAwMDAwMDgwCj4gT2N0IDE0IDE4OjQxOjQ5 LjA1Njc4OSBrZXJuZWw6WyAgIDg1LjU3MDY4N10gW2RybTpnZW44X2RlX2lycV9oYW5kbGVyCj4g W2k5MTVdXSAqRVJST1IqIEZhdWx0IGVycm9ycyBvbiBwaXBlIEE6IDB4MDAwMDAwODAKPiBPY3Qg MTQgMTg6NDE6NDkuMDU2ODg1IFZNIGh5cGVydmlzb3I6IChYRU4pIFtWVC1EXURNQVI6W0RNQSBS ZWFkXQo+IFJlcXVlc3QgZGV2aWNlIFswMDAwOjAwOjAyLjBdIGZhdWx0IGFkZHIgNDIzOGQwYTAw MCwgaW9tbXUgcmVnID0KPiBmZmZmODJjMDAwMjFkMDAwCj4gT2N0IDE0IDE4OjQxOjQ5LjA1Njg5 MCBWTSBoeXBlcnZpc29yOiAoWEVOKSBbVlQtRF1ETUFSOiByZWFzb24gMDYgLQo+IFBURSBSZWFk IGFjY2VzcyBpcyBub3Qgc2V0Cj4KPiBUaGV5IHJlcGVhdC4gSW4gdGhlIGxvZyBhdHRhY2hlZCB0 bwo+IGh0dHBzOi8vZ2l0bGFiLmZyZWVkZXNrdG9wLm9yZy9kcm0vaW50ZWwvLS9pc3N1ZXMvMjU3 NiwgdGhleSBzdGFydCBhdAo+ICJPY3QgMTQgMTg6NDE6NDkuMDU2NTg5IiBhbmQgY29udGludWUg dW50aWwgSSB1bnBsdWcgdGhlIGRvY2sgYXJvdW5kCj4gIk9jdCAxNCAxODo0MTo1NC44MDE4MDIi Lgo+Cj4gSSd2ZSBhbHNvIHNlZW4gc2ltaWxhciBtZXNzYWdlcyB3aGVuIGF0dGFjaGluZyB0aGUg bGFwdG9wJ3MgSERNSSBwb3J0Cj4gdG8gYSA0ayBtb25pdG9yLiBUaGUgZURQIGRpc3BsYXkgYnkg aXRzZWxmIHNlZW1zIG9rYXkuCj4KPiBJIHRyaWVkIEZlZG9yYSAzMSAmIDMyIGxpdmUgaW1hZ2Vz IHdpdGggaW50ZWxfaW9tbXU9b24sIHNvIG5vIFhlbiwgYW5kCj4gZGlkbid0IHNlZSBhbnkgZXJy b3JzCj4KPiBUaGlzIGlzIGEga2VybmVsICYgeGVuIGxvZyB3aXRoIGRybS5kZWJ1Zz0weDFlLiBJ dCBhbHNvIGluY2x1ZGVzIHNvbWUKPiBhcHBsaWNhdGlvbiAoZ2xhc3MpIGxvZ2dpbmcgd2hlbiBp dCBjaGFuZ2VzIHJlc29sdXRpb25zIHdoaWNoIHNlZW1zIHRvCj4gc2V0IG9mZiB0aGUgRE1BIGZh dWx0cy4gNTUwMC1pZ2Z4LW1lc3NhZ2VzLWtlcm4teGVuLWdsYXNzCj4KPiBSdW5uaW5nIHhlbiB3 aXRoIGlvbW11PW5vLWlnZnggZGlzYWJsZXMgdGhlIGlvbW11IGZvciB0aGUgaTkxNQo+IGdyYXBo aWNzIGFuZCBubyBmYXVsdHMgYXJlIHJlcG9ydGVkLiBIb3dldmVyLCB0aGF0IGJyZWFrcyBzb21l IG90aGVyCj4gZGV2aWNlcyAoRGVsbCBMYXRpdHVkZSA3MjAwIGFuZCA1NTgwKSBnaXZpbmcgYSBi bGFjayBzY3JlZW4gd2l0aDoKPgo+IE9jdCAxMCAxMzoyNDozNy4wMjIxMTcga2VybmVsOlsgICAx NC44ODQ3NTldIGk5MTUgMDAwMDowMDowMi4wOiBGYWlsZWQKPiB0byBpZGxlIGVuZ2luZXMsIGRl Y2xhcmluZyB3ZWRnZWQhCj4gT2N0IDEwIDEzOjI0OjM3LjAyMjExOCBrZXJuZWw6WyAgIDE0Ljk2 NDc5NF0gaTkxNSAwMDAwOjAwOjAyLjA6IEZhaWxlZAo+IHRvIGluaXRpYWxpemUgR1BVLCBkZWNs YXJpbmcgaXQgd2VkZ2VkIQo+Cj4gQW55IHN1Z2dlc3Rpb25zIHdlbGNvbWUuCgpQcmVzdW1hYmx5 IHRoaXMgaXMgd2l0aCBhIFBWIGRvbTAuwqAgV2hhdCBhcmUgMzliNTg0NTAwMCBhbmQgNDIzOGQw YTAwMAppbiB0aGUgbWFjaGluZSBtZW1vcnkgbWFwPwoKVGhpcyBzbWVsbHMgbGlrZSBhIG1pc3Np bmcgUk1SUiBpbiB0aGUgQUNQSSB0YWJsZXMuCgp+QW5kcmV3Cl9fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWlsaW5nIGxpc3QKSW50ZWwt Z2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9t YWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo= 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=-5.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 52717C433DF for ; Wed, 14 Oct 2020 19:37:33 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C0718214D8 for ; Wed, 14 Oct 2020 19:37:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=citrix.com header.i=@citrix.com header.b="B1WKLAp+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C0718214D8 Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=citrix.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.6987.18289 (Exim 4.92) (envelope-from ) id 1kSmaL-0006zV-R6; Wed, 14 Oct 2020 19:37:17 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 6987.18289; Wed, 14 Oct 2020 19:37:17 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kSmaL-0006zO-MC; Wed, 14 Oct 2020 19:37:17 +0000 Received: by outflank-mailman (input) for mailman id 6987; Wed, 14 Oct 2020 19:37:16 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kSmaK-0006zJ-9M for xen-devel@lists.xenproject.org; Wed, 14 Oct 2020 19:37:16 +0000 Received: from esa1.hc3370-68.iphmx.com (unknown [216.71.145.142]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id c630df3c-658a-4627-971f-6a46212fdd1c; Wed, 14 Oct 2020 19:37:14 +0000 (UTC) Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1kSmaK-0006zJ-9M for xen-devel@lists.xenproject.org; Wed, 14 Oct 2020 19:37:16 +0000 X-Inumbo-ID: c630df3c-658a-4627-971f-6a46212fdd1c Received: from esa1.hc3370-68.iphmx.com (unknown [216.71.145.142]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id c630df3c-658a-4627-971f-6a46212fdd1c; Wed, 14 Oct 2020 19:37:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=citrix.com; s=securemail; t=1602704235; h=subject:to:references:from:message-id:date:mime-version: in-reply-to:content-transfer-encoding; bh=1NquZVhKtHgIfSXsdXr9x93CbiYIcEFDLKC5Qh1YrSE=; b=B1WKLAp+2C0MEZVwyYSHRK9noA5XzEpn+IwwGfbhGxb8Z6uf97FI7No+ NwJYl7hY0PWVwj6it/SsX78bHskgQ8WMvymwrnykSqp/FRi8/fCnakcyh LzE03BfrEgFh/envKPe/EBdzNASrk+tusYXl+I/4II12LwYHZgvu2hvnY Y=; Authentication-Results: esa1.hc3370-68.iphmx.com; dkim=none (message not signed) header.i=none IronPort-SDR: bNF8p36IWhINFjAdplWDNjC82HQGJ6T8P9UbrPg5fzoF5Xgs/BfMZs0U8j4V310+KGmyMNy+Pg oVvIXPELkru50vfUzuSMbMp8EiD/TP1QpNU1xhQZJRl6fLht9x+e7rdUL6rinuoIv+AxUZ8W99 ffbKxuBvbCNIkVgPWLcSreojgAsqabHuhXMxm68GF9n9JWcKnFK+UXb8/uKOBhrYUB6JV6qOxP mtjGdMbN0h1lazGpmokmxrUhIo+9L49JhyP4AenCXqrY6xAqDTp5pT2tBOO6t8iwwJ+4PZ6tAn K88= X-SBRS: 2.5 X-MesageID: 29351929 X-Ironport-Server: esa1.hc3370-68.iphmx.com X-Remote-IP: 162.221.158.21 X-Policy: $RELAYED X-IronPort-AV: E=Sophos;i="5.77,375,1596513600"; d="scan'208";a="29351929" Subject: Re: i915 dma faults on Xen To: Jason Andryuk , , xen-devel References: From: Andrew Cooper Message-ID: <1a3b90f4-564e-84d3-fd6a-3454e8753579@citrix.com> Date: Wed, 14 Oct 2020 20:37:06 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Content-Language: en-GB X-ClientProxiedBy: AMSPEX02CAS02.citrite.net (10.69.22.113) To FTLPEX02CL05.citrite.net (10.13.108.178) On 14/10/2020 20:28, Jason Andryuk wrote: > Hi, > > Bug opened at https://gitlab.freedesktop.org/drm/intel/-/issues/2576 > > I'm seeing DMA faults for the i915 graphics hardware on a Dell > Latitude 5500. These were captured when I plugged into a Dell > Thunderbolt dock with two DisplayPort monitors attached. Xen 4.12.4 > staging and Linux 5.4.70 (and some earlier versions). > > Oct 14 18:41:49.056490 kernel:[ 85.570347] [drm:gen8_de_irq_handler > [i915]] *ERROR* Fault errors on pipe A: 0x00000080 > Oct 14 18:41:49.056494 kernel:[ 85.570395] [drm:gen8_de_irq_handler > [i915]] *ERROR* Fault errors on pipe A: 0x00000080 > Oct 14 18:41:49.056589 VM hypervisor: (XEN) [VT-D]DMAR:[DMA Read] > Request device [0000:00:02.0] fault addr 39b5845000, iommu reg = > ffff82c00021d000 > Oct 14 18:41:49.056594 VM hypervisor: (XEN) [VT-D]DMAR: reason 06 - > PTE Read access is not set > Oct 14 18:41:49.056784 kernel:[ 85.570668] [drm:gen8_de_irq_handler > [i915]] *ERROR* Fault errors on pipe A: 0x00000080 > Oct 14 18:41:49.056789 kernel:[ 85.570687] [drm:gen8_de_irq_handler > [i915]] *ERROR* Fault errors on pipe A: 0x00000080 > Oct 14 18:41:49.056885 VM hypervisor: (XEN) [VT-D]DMAR:[DMA Read] > Request device [0000:00:02.0] fault addr 4238d0a000, iommu reg = > ffff82c00021d000 > Oct 14 18:41:49.056890 VM hypervisor: (XEN) [VT-D]DMAR: reason 06 - > PTE Read access is not set > > They repeat. In the log attached to > https://gitlab.freedesktop.org/drm/intel/-/issues/2576, they start at > "Oct 14 18:41:49.056589" and continue until I unplug the dock around > "Oct 14 18:41:54.801802". > > I've also seen similar messages when attaching the laptop's HDMI port > to a 4k monitor. The eDP display by itself seems okay. > > I tried Fedora 31 & 32 live images with intel_iommu=on, so no Xen, and > didn't see any errors > > This is a kernel & xen log with drm.debug=0x1e. It also includes some > application (glass) logging when it changes resolutions which seems to > set off the DMA faults. 5500-igfx-messages-kern-xen-glass > > Running xen with iommu=no-igfx disables the iommu for the i915 > graphics and no faults are reported. However, that breaks some other > devices (Dell Latitude 7200 and 5580) giving a black screen with: > > Oct 10 13:24:37.022117 kernel:[ 14.884759] i915 0000:00:02.0: Failed > to idle engines, declaring wedged! > Oct 10 13:24:37.022118 kernel:[ 14.964794] i915 0000:00:02.0: Failed > to initialize GPU, declaring it wedged! > > Any suggestions welcome. Presumably this is with a PV dom0.  What are 39b5845000 and 4238d0a000 in the machine memory map? This smells like a missing RMRR in the ACPI tables. ~Andrew