[PATCH] arm64: Work around broken GCC handling of "S" constraint

[Marc Zyngier]

On 2020-12-07 17:19, Ard Biesheuvel wrote:
> (resend with David's email address fixed)

Irk. Thanks for that.

>> > +#ifdef CONFIG_CC_HAS_BROKEN_S_CONSTRAINT
>> > +#define SYM_CONSTRAINT "i"
>> > +#else
>> > +#define SYM_CONSTRAINT "S"
>> > +#endif
>> > +
>> 
>> Could we just check GCC_VERSION here?

I guess we could. But I haven't investigated which exact range of
compiler is broken (GCC 6.3 seems fixed, but that's the oldest
I have apart from the offending 4.9).

         M.
-- 
Jazz is not dead. It just smells funny...