Messages in this thread | | | Date | Tue, 23 Jun 2015 11:25:06 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 20/28] ARCv2: barriers |
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On Tue, Jun 23, 2015 at 01:28:03PM +0530, Vineet Gupta wrote: > +/* > + * MMIO can also get buffered/optimized in micro-arch, so barriers needed > + * Based on ARM model for the typical use case > + * > + * <writel_relaxed DMA buffer> > + * <writel MMIO "go" reg> > + * or: > + * <readl MMIO "status" reg> > + * <readl_relaxed DMA buffer> > + * > + * http://www.spinics.net/lists/kernel/msg2018397.html
http://lkml.kernel.org/r/20150622133656.GG1583@arm.com
Might I suggest you use the above link. Since we control kernel.org we have redirect that URL to a archive of our choosing. This keeps the links working even if spinics.net or marc.info were to go belly up.
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