Re: [PATCH v6 0/9] coco: guest: Enforce host page-size alignment for shared buffers

[Jason Gunthorpe]

On Wed, Sep 23, 2026 at 10:31:19AM +0530, Aneesh Kumar K.V wrote:
> Jason Gunthorpe <jgg@xxxxxxxx> writes:
> 
> > On Fri, Sep 18, 2026 at 05:52:31PM +0100, Catalin Marinas wrote:
> >
> >> TBH, I'm tempted not to support this configuration at all, just fail
> >> gracefully if the realm page size doesn't match the host's. However, if
> >> that's a real world configuration, 
> >
> > realm != host is going to be fairly common.
> >
> > host > realm is probably not that common, I would guess.
> 
> Wouldn't it be more common to run a distro with a 4K page size as the
> guest on a custom hypervisor with a 4K or larger page size?

Maybe someday, but right now I think the 4k hyp is going to be common
and people who really reach for 16/64k are going to need to run !4k
guests too.

Jason