Re: [PATCH bpf-next v2 00/11] bpf: add support for new btf kind BTF_KIND_TAG

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> On Thu, Feb 17, 2022 at 5:20 AM Jose E. Marchesi
> <jose.marchesi@xxxxxxxxxx> wrote:
>>
>> Just a heads-up.
>>
>> We are still working on the GCC implementation of the tags.  Having some
>> difficulties with the ordering of the C type attributes.
>>
>> Regarding the DWARF part, GCC uses DWARF as the internal "canonical"
>> debug info, and the BTF is generated from it.  This means we had to add
>> a DWARF DIE for the pointer tag qualifier anyway in order to convey the
>> info to BTF.  So now it is just a matter of emitting it along with the
>> rest of the DWARF.
>
> Thanks for the update!
> Do you have an early git branch we can use to test building
> the kernel with it?
> Or is it not at this level yet?

Not yet.

Once we have something working internally we will submit the patches to
gcc-patches for discussion.  At that point we can put them in a branch
for early testing.



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