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

Boris Ostrovsky
2022-03-04T17:37:26Z

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

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

-boris