On 3/4/22 12:28 PM, Christoph Hellwig wrote:

On Wed, Mar 02, 2022 at 08:15:03AM -0500, Boris Ostrovsky wrote:

quoted

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?

Actually, that's the only thing I did do so far and yes, it does get called.


-boris