Thread (18 messages) 18 messages, 4 authors, 2018-03-26

Re: [PATCH v13 01/10] iomap: Use correct endian conversion function in mmio_writeXXbe

From: Logan Gunthorpe <logang@deltatee.com>
Date: 2018-03-26 20:33:13
Also in: linux-crypto, lkml


On 26/03/18 01:50 PM, Arnd Bergmann wrote:
I wouldn't expect it to matter: the byte swap is almost always much
cheaper compared to the actual bus access for the MMIO, and I
would also guess that modern compilers can eliminate the double
byte swap on architectures where writel() is an inline function. Most of
the important architectures use ARCH_USE_BUILTIN_BSWAP, which
guarantees that.
Fair enough. Sometime this week I'll update my patch set to change that.

Thanks,

Logan
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