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Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb
- To: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Christoph Hellwig <hch@xxxxxx>
- From: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>
- Date: Wed, 2 Mar 2022 08:17:52 -0500
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- Cc: 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: Wed, 02 Mar 2022 13:18:52 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 3/2/22 8:15 AM, Boris Ostrovsky wrote:
On 3/1/22 9:55 PM, Stefano Stabellini wrote:
On Tue, 1 Mar 2022, Christoph Hellwig wrote:
Allow to pass a remap argument to the swiotlb initialization functions
to handle the Xen/x86 remap case. ARM/ARM64 never did any remapping
from xen_swiotlb_fixup, so we don't even need that quirk.
Aside from that the rest looks OK. Also, you can add my:
Tested-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
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.
Again, this is as dom0. Baremetal is fine.
-boris
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