On Friday, September 9, 2016 1:43:17 PM CEST Hoan Tran wrote: > > > * Are you sure you don't need any smp_rmb()/smp_wmb() barriers > > between the accesses? > > No, we don't need a strict read/write during access PCC subspace. Just > make sure all access is committed before PCC send message to the > platform which done by PCC mailbox driver. > Ok, got it. The PCC mailbox driver presumably uses writel() to send the message, and that implies the necessary barrier (unlike writel_relaxed), right? Arnd -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
