Re: [RFC v3 01/26] asm-generic: atomic64: allow using generic atomic64 on 64bit platforms

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On Wed, Feb 05, 2020 at 04:30:10PM +0900, Hajime Tazaki wrote:
> From: Octavian Purdila <tavi.purdila@xxxxxxxxx>
> 
> With CONFIG_64BIT enabled, atomic64 via CONFIG_GENERIC_ATOMIC64 options
> are not compiled due to type conflict of atomic64_t defined in
> linux/type.h.
> 
> This commit fixes the issue and allow using generic atomic64 ops.
> 
> Currently, LKL is only the user which defines GENERIC_ATOMIC64
> (lib/atomic64.c) under CONFIG_64BIT environment.  Thus, there is no
> issues before this commit.

Uhhhhh, no.

Not allowing GENERIC_ATOMIC64 on 64BIT is a *feature*.

Any 64bit arch that needs GENERIC_ATOMIC64 is an utter piece of crap.

Please explain more.




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