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 Received: from smtp1.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 464E2C43334 for ; Thu, 23 Jun 2022 11:41:14 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp1.osuosl.org (Postfix) with ESMTP id C44B084754; Thu, 23 Jun 2022 11:41:13 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org C44B084754 X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp1.osuosl.org ([127.0.0.1]) by localhost (smtp1.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id fDdprhlajPGw; Thu, 23 Jun 2022 11:41:13 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp1.osuosl.org (Postfix) with ESMTPS id 97F1684729; Thu, 23 Jun 2022 11:41:12 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp1.osuosl.org 97F1684729 Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 3EFF6C0039; Thu, 23 Jun 2022 11:41:12 +0000 (UTC) Received: from smtp2.osuosl.org (smtp2.osuosl.org [140.211.166.133]) by lists.linuxfoundation.org (Postfix) with ESMTP id C9589C002D for ; Thu, 23 Jun 2022 11:41:10 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp2.osuosl.org (Postfix) with ESMTP id 9299A405D6 for ; Thu, 23 Jun 2022 11:41:10 +0000 (UTC) DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org 9299A405D6 X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp2.osuosl.org ([127.0.0.1]) by localhost (smtp2.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id GK8SMluJ4Zak for ; Thu, 23 Jun 2022 11:41:09 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 DKIM-Filter: OpenDKIM Filter v2.11.0 smtp2.osuosl.org AE5304019C Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp2.osuosl.org (Postfix) with ESMTP id AE5304019C for ; Thu, 23 Jun 2022 11:41:09 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 24B8112FC; Thu, 23 Jun 2022 04:41:09 -0700 (PDT) Received: from [10.57.85.4] (unknown [10.57.85.4]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 092363F534; Thu, 23 Jun 2022 04:41:07 -0700 (PDT) Message-ID: <653fba02-7eef-5f0d-66dd-7599af84db86@arm.com> Date: Thu, 23 Jun 2022 12:41:00 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Subject: Re: [PATCH v2] iommu/dma: Add config for PCI SAC address trick Content-Language: en-GB To: Joerg Roedel References: <3f06994f9f370f9d35b2630ab75171ecd2065621.1654782107.git.robin.murphy@arm.com> From: Robin Murphy In-Reply-To: Cc: iommu@lists.linux-foundation.org, will@kernel.org, linux-kernel@vger.kernel.org, hch@lst.de X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On 2022-06-23 12:33, Joerg Roedel wrote: > On Wed, Jun 22, 2022 at 02:12:39PM +0100, Robin Murphy wrote: >> Thanks for your bravery! > > It already starts, with that patch I am getting: > > xhci_hcd 0000:02:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000f address=0xff00ffffffefe000 flags=0x0000] > > In my kernel log. The device is an AMD XHCI controller and seems to > funciton normally after boot. The message disappears with > iommu.forcedac=0. > > Need to look more into that... Given how amd_iommu_domain_alloc() sets the domain aperture, presumably the DMA address allocated was 0xffffffffffefe000? Odd that it gets bits punched out in the middle rather than simply truncated off the top as I would have expected :/ Robin. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu