Re: um: this_cpu_cmpxchg16b_emu

From: Richard Weinberger
Date: Tue Apr 12 2011 - 14:41:20 EST

Am Dienstag 12 April 2011, 20:10:37 schrieb Christoph Lameter:
> On Tue, 12 Apr 2011, Richard Weinberger wrote:
> > This patch implements this_cpu_cmpxchg16b_emu() for UML.
> Is this really necessary? Just undefine CONFIG_CMPXCHG_LOCAL for UML and
> the asm code will not be used.

UML includes arch/x86/Kconfig.cpu which defines CONFIG_CMPXCHG_LOCAL automatically.
Just disabling CONFIG_CMPXCHG_LOCAL for UML is IMHO not very nice.
When chpxchg is available also UML should use it...

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