Re: [PATCH v2 02/10] Add Aarch64 SVE Linux headers

[Pedro Alves <palves at redhat dot com>]

On 06/12/2018 03:37 PM, Alan Hayward wrote:
> 
> 
>> On 8 Jun 2018, at 16:23, Simon Marchi <simon.marchi@polymtl.ca> wrote:
>>
>> On 2018-06-08 10:37, Simon Marchi wrote:
>>> The code looks good to me, thanks.  I am still unsure about the
>>> licensing side of it, let me ask the FSF people about it, I'll come
>>> back to you when it's done.  I hope it won't take too long!
>>
>> Hi Alan,
>>
>> After discussion with other maintainers, it was suggested to avoid involving the legal staff if we want to resolve this anytime soon.
>>
>> Since ARM already holds the copyright to these header files anyway (they were all written by ARM people), you may be able to submit that code as regular FSF-assigned code, without changing the status of the kernel copy.  But nobody here is a lawyer, so nobody wants to say for sure :).
>>
>> Maybe it's ok after all if we don't include these headers (at least for now), and require that GDB for native AArch64 is built against the headers of a >= 4.15 kernel?  They can always be included later, but it would avoid delaying the inclusion of the feature, since you want to have it before we branch 8.2.
>>
> 
> Sorry, I did miss this one (I think I sent my reply to the previous
> one more or less the same time you sent this).
> 
> If I commit this, 

What's "this" ?  

How about we add a configure check to check if the system headers support
the needed SVE bits, and guard the native gdb SVE bits with
HAVE_AARCH64_SVE or something like that?

(I think) this is going to cause buildbot to break
> for the aarch64 builds.

Thanks,
Pedro Alves