Subject: Re: About commit "io: change inX() to have their own IO barrier overrides"

From: Sinan Kaya <[email-masked]>
Date: Thu, 5 Mar 2020 22:44:08 -0500

On 3/3/2020 11:40 AM, Arnd Bergmann wrote:
>> -          ret = read##bw(PCI_IOBASE + addr);
>> +          __io_pbr();
>> +          ret = __raw_read##bw(PCI_IOBASE + addr);
>> +          __io_pbr();
> __io_par();
> 

Why do we need to change read##bw above?

read##bw already provides strong ordering guarantees across multiple
architectures.

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