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SubjectRe: Word-at-a-time dcache name accesses (was Re: .. anybody know of any filesystems that depend on the exact VFS 'namehash' implementation?)
On Fri, Mar 02, 2012 at 04:24:11PM -0800, Linus Torvalds wrote:
> Tons of CPU's have efficient char accesses but horrible unaligned word
> accesses. Some are even outright buggy (ie at least some ARM cores)
> and load crap. Others take a fault.

To be fair, that wasn't the ARM core. That was the MEMC chip (roughly
equivalent to a northbridge). Also, there's no need for Linux to care
about that any more, since we removed the arm26 port in July 2007. As far
as I know, all arm32 cores have been coupled with memory controllers
that are functional.

Matthew Wilcox Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours. We can't possibly take such
a retrograde step."

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