[PATCH v7 0/7] netdev: intel: Eliminate duplicate barriers on weakly-ordered archs

Sinan Kaya okaya at codeaurora.org
Tue Mar 27 07:48:11 PDT 2018


On 3/27/2018 10:38 AM, Alexander Duyck wrote:
>> We are being told that if you use writel(), then you don't need a wmb() on
>> all architectures.
> I'm not sure who told you that but that is incorrect, at least for
> x86. If you attempt to use writel() without the wmb() we will have to
> NAK the patches. We will accept the wmb() with writel_releaxed() since
> that solves things for ARM.
> 

I added netdev and you to the RFC on writel and writel_relaxed list. 
Feel free to raise your concerns.

-- 
Sinan Kaya
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm Technologies, Inc.
Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.



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