Re: VM-related Oops: 2.4.15pre1

From: David Woodhouse (dwmw2@infradead.org)
Date: Mon Nov 19 2001 - 03:44:28 EST


jmerkey@vger.timpanogas.org said:
> This is true. They Generate what's called a "split lock" bus
> transaction where the bus will hold LOCK# low across the several clock
> cycles to complete the write. They are **VERY** heavy, BTW, and
> really cause nasty performance hits.

Is it worth making put_unaligned and get_unaligned on x86 avoid this by
loading/storing the two halves of the required datum separately, then?

--
dwmw2

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