Reset HWCAP2_AFP bits in FPCR for default fenv.

[Florian Weimer]

* Tejas Belagod:

>> -----Original Message-----
>> From: Joseph Myers <joseph@codesourcery.com>
>> Sent: Wednesday, June 29, 2022 10:24 PM
>> To: Szabolcs Nagy <Szabolcs.Nagy@arm.com>
>> Cc: Florian Weimer <fweimer@redhat.com>; Tejas Belagod
>> <Tejas.Belagod@arm.com>; Tejas Belagod via Libc-alpha <libc-
>> alpha@sourceware.org>
>> Subject: Re: Reset HWCAP2_AFP bits in FPCR for default fenv.
>> 
>> On Wed, 29 Jun 2022, Szabolcs Nagy via Libc-alpha wrote:
>> 
>> > i don't have a strong opinion, but i thought it made sense to restore
>> > all these special bits with fesetenv(FE_DFL_ENV).
>> 
>> Yes, I think FE_DFL_ENV (and FE_DFL_MODE) should cover all such
>> architecture-specific control settings, even when we also don't support the
>> use of most floating-point APIs with non-default values of those settings.
>> 
>
> Thanks all for your comments. 
>
> Florian, given the explanations from Szabolcs and Joseph, do you have
> any objections to this change?

No objection to the change itself, but you didn't post the proposed
commit message.  Please mention “aarch64” in the subject.

Thanks,
Florian