On Fri, Sep 05, 2014 at 03:24:35PM -0400, Peter Hurley wrote: > On 09/05/2014 03:05 PM, Paul E. McKenney wrote: > > On Fri, Sep 05, 2014 at 02:50:31PM -0400, Peter Hurley wrote: > >> On 09/05/2014 02:09 PM, Paul E. McKenney wrote: > > [cut] > > >>> ------------------------------------------------------------------------ > >>> > >>> documentation: Record limitations of bitfields and small variables > >>> > >>> This commit documents the fact that it is not safe to use bitfields as > >>> shared variables in synchronization algorithms. It also documents that > >>> CPUs must provide one-byte and two-byte load and store instructions > >> ^ > >> atomic > > > > Here you meant non-atomic? My guess is that you are referring to the > > fact that you could emulate a one-byte store on pre-EV56 Alpha CPUs > > using the ll and sc atomic-read-modify-write instructions, correct? > > Yes, that's what I meant. I must be tired and am misreading the commit > message, or misinterpreting it's meaning. Very good, got it! Thanx, Paul -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
