Re: [LSF/MM/BPF TOPIC] 64k (or 16k) base page size on x86

[David Hildenbrand (Arm)]

On 2/20/26 20:33, Kalesh Singh wrote:
> On Fri, Feb 20, 2026 at 8:30 AM David Hildenbrand (Arm)
> <david@xxxxxxxxxx> wrote:
> > On 2/20/26 13:07, Kiryl Shutsemau wrote:
> > > Well, it will drastically limit the adoption. We have too much legacy
> > > stuff on x86.
> >
> > I'd assume that many applications nowadays can deal with differing page
> > sizes (thanks to some other architectures paving the way).
> >
> > But yes, some real legacy stuff, or stuff that ever only cared about
> > intel still hardcodes pagesize=4k.
>
> I think most issues will stem from linkers setting the default ELF
> segment alignment (max-page-size) for x86 to 4096. So those ELFs will
> not load correctly or at all on the larger emulated granularity.

Right, I assume that they will have to be thought about that, and 
possibly, some binaries/libraries recompiled.

--
Cheers,

David