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Date: Mon, 13 Aug 2007 02:30:09 -0400 From: Chris Snook <csnook@...hat.com> To: Paul Mackerras <paulus@...ba.org> CC: Linus Torvalds <torvalds@...ux-foundation.org>, "Luck, Tony" <tony.luck@...el.com>, Andreas Schwab <schwab@...e.de>, linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org, netdev@...r.kernel.org, akpm@...ux-foundation.org, ak@...e.de, heiko.carstens@...ibm.com, davem@...emloft.net, schwidefsky@...ibm.com, wensong@...ux-vs.org, horms@...ge.net.au, wjiang@...ilience.com, cfriesen@...tel.com, zlynx@....org, rpjday@...dspring.com, jesper.juhl@...il.com Subject: Re: [PATCH 9/24] make atomic_read() behave consistently on ia64 Paul Mackerras wrote: > Chris Snook writes: > >> I'll do this for the whole patchset. Stay tuned for the resubmit. > > Could you incorporate Segher's patch to turn atomic_{read,set} into > asm on powerpc? Segher claims that using asm is really the only > reliable way to ensure that gcc does what we want, and he seems to > have a point. > > Paul. I haven't seen a patch yet. I'm going to resubmit with inline volatile-cast atomic[64]_[read|set] on all architectures as a reference point, and if anyone wants to go and implement some of them in assembly, that's between them and the relevant arch maintainers. I have no problem with (someone else) doing it in assembly. I just don't think it's necessary and won't let it hold up the effort to get consistent behavior on all architectures. -- Chris - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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