From: Philip B. <ph...@bo...> - 2003-03-04 04:19:27
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On Mon, Mar 03, 2003 at 05:42:24PM -0800, Alan Young wrote: > On Mon, 3 Mar 2003 10:48:54 -0800 Philip Brown <ph...@bo...> wrote: > > > > But anyway, sounds like I can NOP it out, I guess. > > You may be able to NOP it if your platform does not require > it. I know the Alpha uses memory barriers. I think PPC may > use them too. > > Here's a bit from the Alpha Architecture Handbook on the Alpha's > memory barrier instruction: > ... ah. Thanks for the extra info. [someone might want to comment the thing in the header files] Solaris handles it differently. It specifies a particular memory mapping as needing sequential access, at map time, I believe. |