Re: sequence lock in Linux

From: H. Peter Anvin
Date: Fri Jun 11 2010 - 17:39:40 EST


On 06/11/2010 02:36 PM, Paul E. McKenney wrote:
> Memory barriers in the sequence-lock code prevent this, assuming, as
> you point out, that memory clobber works (but if it doesn't, it should
> be fixed):

The constness is my main concern. It's not clear to me that "memory" is
meant to imply that const memory areas without volatile can be clobbered.

-hpa
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