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Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb
- To: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- From: Christoph Hellwig <hch@xxxxxx>
- Date: Fri, 4 Mar 2022 18:28:59 +0100
- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, x86@xxxxxxxxxx, Anshuman Khandual <anshuman.khandual@xxxxxxx>, Tom Lendacky <thomas.lendacky@xxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, David Woodhouse <dwmw2@xxxxxxxxxxxxx>, Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-mips@xxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, tboot-devel@xxxxxxxxxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx
- Delivery-date: Fri, 04 Mar 2022 17:29:12 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.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.
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?
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