On Wed, 2019-01-23 at 19:39 +0100, Cédric Le Goater wrote:

quoted

The reason I ask is that we will have to be much more careful about
memory allocation lifetimes with this patch. 

yes. bad refcounting will lead the host kernel to a crash. 

One way to alleviate that is to make sure this is only supported on
selected devices such as XICS via some flag or the presence of a
callback.

Cheers,
Ben.