Re: [patch] SMP alternatives

From: Alan Cox
Date: Wed Nov 23 2005 - 17:18:12 EST

On Mer, 2005-11-23 at 13:36 -0800, Linus Torvalds wrote:
> > have to add PAT support which we need to do anyway we would get a world
> > where on uniprocessor lock prefix only works on addresse targets we want
> > it to - ie pci_alloc_consistent() pages.
> No. That would be wrong.
> The thing is, "lock" is useless EVEN ON SMP in user space 99% of the time.

Now I see what you are aiming at, yes that makes vast amounts of sense
and since AMD have the "no lock effect" bit for general case maybe they

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