Re: [PATCH 11/12] swiotlb: merge swiotlb-xen initialization into swiotlb

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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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