xserver ABI freeze policy

Aaron Plattner aplattner at nvidia.com
Wed Apr 30 08:58:02 PDT 2014

On 04/30/2014 08:53 AM, Keith Packard wrote:
> Aaron Plattner <aplattner at nvidia.com> writes:
>> Either of these sounds fine to me.  Having the "major bug fixes only"
>> date double as the ABI freeze date has a nice simplicity to it.  That
>> window might be a tad short for us to try to target same-day support but
>> hopefully it's close enough for people.
> Let's plan on making an explicit ABI/API freeze one month after the end
> of the merge window.
> Do you end up generating some kind of summary of API/ABI changes that we
> could post soon after the end of the merge window so that we could
> explicitly review that before the API/ABI was frozen?

I usually just diff the old headers against the new ones and fix up 
anything that affects our drivers, but I can try to put together a 
summary, sure.

>> Sounds good to me.  Since I'm reverting the support changes in the
>> driver, I personally don't care whether the ABI number gets bumped to 18
>> or not: it's just some minor s/17/18/ in a few places if it does.
> I'll bump the ABI number to ensure that all drivers get rebuilt once we
> do change. We've got a 16-bit space of numbers to work with, which seems
> likely to be sufficient even for X.

Sounds good.  I really hope I'm not still working on X when it gets to 
ABI version 65535.0.


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