Re: [Xen-devel] [PATCH v4] arm: remove !CPU_V6 and!GENERIC_ATOMIC64 build dependencies for XEN

From: Ian Campbell
Date: Wed Jan 22 2014 - 04:44:02 EST

On Tue, 2014-01-21 at 13:44 +0000, Stefano Stabellini wrote:
> Remove !GENERIC_ATOMIC64 build dependency:
> - introduce xen_atomic64_xchg
> - use it to implement xchg_xen_ulong
> Remove !CPU_V6 build dependency:
> - introduce __cmpxchg8 and __cmpxchg16, compiled even ifdef
> - implement sync_cmpxchg using __cmpxchg8 and __cmpxchg16
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>

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