[Virtio-fs] Min host / vm kernel rev for basic DAX ops?

[Harry G. Coin]

On 4/28/21 3:15 AM, Dr. David Alan Gilbert wrote:
> * Harry G. Coin (hgcoin at gmail.com) wrote:
>> Kindly answer a couple 'basic' virtiofs questions:
>>
>> 1) Which mainline kernel version is necessary for the host, and for the
>> vm to enable reliable DAX operations -- supposing no shared host
>> activity on the underlying fs.
> I don't think there's any host kernel dependency for DAX
> currently.
> (You do need a guest with the DAX support)

At least the version of the 'virt-manager' on fedora 33 doesn't support
the 'cache-size' host option, which as I understand from a post a few
days ago should be around 4G.  That's why I asked about the host
requirements.