Re: [PATCH v3] io: add io_pgtable abstraction

[Boris Brezillon]

On Wed, 12 Nov 2025 09:57:09 -0300
Daniel Almeida <daniel.almeida@xxxxxxxxxxxxx> wrote:

> > +    /// Unmap a range of virtually contiguous pages of the same size.
> > +    ///
> > +    /// # Safety
> > +    ///
> > +    /// This page table must contain a mapping at `iova` that consists of exactly `pgcount` pages
> > +    /// of size `pgsize`.  
> 
> Same here. I don’t think the above is necessarily a requirement.

It's not, indeed, the returned size will tell you how much was unmapped
if there's less to unmap, or the region has holes.