Subject: Re: [PATCH] alpha: provide ioread64 and iowrite64 implementations
To: Logan Gunthorpe <logang@deltatee.com>, linux-kernel@vger.kernel.org
Cc: linux-alpha@vger.kernel.org, linux-arch@vger.kernel.org,
        Ivan Kokshaysky <ink@jurassic.park.msu.ru>,
        Matt Turner <mattst88@gmail.com>
References: <20170624115707.30095-1-horia.geanta@nxp.com>
 <20170624151308.6348-1-rth@twiddle.net>
 <dfc70cc1-09a9-f6d0-83a8-c8ca5d7a232b@deltatee.com>
From: Richard Henderson <rth@twiddle.net>
Message-ID: <787b4be1-ce9e-6838-27b6-0cd9f8d7805f@twiddle.net>
Date: Sat, 24 Jun 2017 08:25:30 -0700
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On 06/24/2017 08:19 AM, Logan Gunthorpe wrote:
> Hey,
> 
> On 24/06/17 09:13 AM, Richard Henderson wrote:
>> All Alpha hosts except for Jensen provide 64-bit I/O operations.
>>
>> Jensen is EISA only, so there ought not be any devices that even
>> attempt such operations.  But just in case, use 2 32-bit operations.
> 
> Thanks for this, Richard.
> 
> However, I was recently enlightened by the existence of the
> linux/io-64-nonatomic* headers. This is where the 2 32-bit operation
> functions belong. So you should probably remove them from this patch and
> let drivers that need them just include those headers.

This has nothing to do with drivers.

This is all about providing 64-bit operations for the 99.999% of alphas that do 
have them.


r~