[openib-general] Re: librdmacm/ucma

[Michael S. Tsirkin]

Quoting r. Sean Hefty <mshefty at ichips.intel.com>:
> Subject: Re: [openib-general] Re: librdmacm/ucma
> 
> Michael S. Tsirkin wrote:
> >The library now has
> >min = 1 max = 2
> >this means that any ABI update in kernel will break userspace.
> 
> Isn't that what it means to break the ABI?

In normal usage I expect we must not break the ABI, but should rather
extend it - without breaking userspace. How do you extend the ABI?
not by bumping the ABI revision? How does userspace find out
whether kernel supports new features?

-- 
MST