Subject: Re: [RFC PATCH net-next] net: mana: Force single RX buffer per page under SWIOTLB bounce modes

From: Jakub Kicinski <[email-masked]>
Date: Mon, 27 Apr 2026 15:44:29 -0700

On Mon, 27 Apr 2026 07:41:11 -0700 Dipayaan Roy wrote:
> In both cases, sub-page RX buffer fragments allocated via page_pool may
> not be compatible with bounce buffering in this mode, leading to failures
> in the RX path.

What does it mean to not be compatible with swiotlb?
Normally that indicates that DMA API is mis-used.