RFC on writel and writel_relaxed

David Miller davem at davemloft.net
Fri Mar 30 01:04:14 AEDT 2018

From: Sinan Kaya <okaya at codeaurora.org>
Date: Thu, 29 Mar 2018 09:56:01 -0400

> sparc		question sent

Sparc never lets physical memory accesses pass MMIO, and vice versa.

They are always strongly ordered amongst eachother.

Therefore no explicit barrier instructions are necessary.

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