From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@lst.de>
Date: Thu, 03 Mar 2022 10:57:14 +0000
Subject: Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb
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References: <20220301105311.885699-1-hch@lst.de> <20220301105311.885699-12-hch@lst.de> <alpine.DEB.2.22.394.2203011720150.3261@ubuntu-linux-20-04-desktop> <ca748512-12bb-7d75-13f1-8d5ec9703e26@oracle.com>
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To: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>, Christoph Hellwig <hch@lst.de>, iommu@lists.linux-foundation.org, x86@kernel.org, Anshuman Khandual <anshuman.khandual@arm.com>, Tom Lendacky <thomas.lendacky@amd.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Juergen Gross <jgross@suse.com>, Joerg Roedel <joro@8bytes.org>, David Woodhouse <dwmw2@infradead.org>, Lu Baolu <baolu.lu@linux.intel.com>, Robin Murphy <robin.murphy@arm.com>, linux-arm-kernel@lists.infradead.org, xen-devel@lists.xenproject.org, linux-ia64@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-hyperv@vger.kernel.org, tboot-devel@lists.sourceforge.net, linux-pci@vger.kernel.org

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.

Thanks. Looks like the sizing is going wrong.  Just to confirm, this is
dom0 on x86 and no special command line options?