Re: [PATCH v4 2/2] kvm: Use huge pages for DAX-backed files

[Barret Rhoden]

On 12/12/19 12:37 PM, Dan Williams wrote:
> Yeah, since device-dax is the only path to support longterm page
> pinning for vfio device assignment, testing with device-dax + 1GB
> pages would be a useful sanity check.

What are the issues with fs-dax and page pinning?  Is that limitation 
something that is permanent and unfixable (by me or anyone)?

I'd like to put a lot more in a DAX/pmem region than just a guest's 
memory, and having a mountable filesystem would be extremely convenient.

Thanks,

Barret