Re: [PATCH] bitops: add _local bitops

From: H. Peter Anvin
Date: Wed May 09 2012 - 15:23:55 EST


On 05/09/2012 12:19 PM, Andrew Morton wrote:
>
> Secondly: can KVM just use __set_bit() and friends? I suspect those
> interfaces happen to meet your requirements. At least on architectures
> you care about.
>

__set_bit() and friends right now don't have optimization barriers,
meaning the compiler is free to move them around.

-hpa
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