On Wed, Aug 27, 2025 at 09:37:09AM +0200, Christoph Hellwig wrote:

On Tue, Aug 26, 2025 at 04:33:15PM -0600, Keith Busch wrote:

quoted

virt boundary check. It's looking like replace bvec's "page + offset"
with phys addrs, yeah?!

Basically everything should be using physical address.  The page + offset
is just a weird and inefficient way to represent that and we really
need to get rid of it.

I was plowing ahead with converting to phys addrs only to discover
skb_frag_t overlays a bvec with tightly coupled expectations on its
layout. I'm not comfortable right now messing with that type. I think it
may need to be decoupled to proceed on this path. :(