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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (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 0B068C433F5 for ; Fri, 4 Mar 2022 17:29:31 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4K9FGK4PJFz30hV for ; Sat, 5 Mar 2022 04:29:29 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lst.de (client-ip=213.95.11.211; helo=verein.lst.de; envelope-from=hch@lst.de; receiver=) Received: from verein.lst.de (verein.lst.de [213.95.11.211]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4K9FFs102Cz2yZc for ; Sat, 5 Mar 2022 04:29:04 +1100 (AEDT) Received: by verein.lst.de (Postfix, from userid 2407) id C0EE168AFE; Fri, 4 Mar 2022 18:28:59 +0100 (CET) Date: Fri, 4 Mar 2022 18:28:59 +0100 From: Christoph Hellwig To: Boris Ostrovsky Subject: Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb Message-ID: <20220304172859.GA12860@lst.de> References: <20220301105311.885699-1-hch@lst.de> <20220301105311.885699-12-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-hyperv@vger.kernel.org, x86@kernel.org, linux-ia64@vger.kernel.org, linux-pci@vger.kernel.org, linux-riscv@lists.infradead.org, Christoph Hellwig , linux-s390@vger.kernel.org, Stefano Stabellini , Joerg Roedel , Anshuman Khandual , tboot-devel@lists.sourceforge.net, xen-devel@lists.xenproject.org, David Woodhouse , Tom Lendacky , Konrad Rzeszutek Wilk , linux-arm-kernel@lists.infradead.org, Juergen Gross , linuxppc-dev@lists.ozlabs.org, linux-mips@vger.kernel.org, iommu@lists.linux-foundation.org, Robin Murphy , Lu Baolu Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, Mar 02, 2022 at 08:15:03AM -0500, Boris Ostrovsky wrote: > Not for me, I fail to boot with > > [ 52.202000] bnxt_en 0000:31:00.0: swiotlb buffer is full (sz: 256 bytes), total 0 (slots), used 0 (slots) > > (this is iscsi root so I need the NIC). > > > I bisected it to "x86: remove the IOMMU table infrastructure" but haven't actually looked at the code yet. That looks like the swiotlb buffer did not get initialized at all, but I can't really explain why. Can you stick in a printk and see if xen_swiotlb_init_early gets called at all?