From: David Mosberger <davidm@napali.hpl.hp.com>
Date: Mon, 23 Sep 2002 14:33:46 -0700
>>>>> On Mon, 23 Sep 2002 23:31:13 +0200, Daniel Phillips <phillips@arcor.de> said:
Daniel> Why attempt to write 8 bytes on ia32 when only 4 are needed?
Even on ia32 you'll need 8 bytes if the controller is operated in DAC
mode (which is what you want for a machine with >4GB of memory), no?
Right. But if we know the top 32-bits will always be zero (f.e. if
CONFIG_HIGHMEM is disabled on x86) one might want to optimize this
to avoid the first 32-bit store.
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