From: "Van Maren, Kevin" <kevin.vanmaren@unisys.com>
Date: Wed, 22 Aug 2001 21:22:19 -0500
If the HW generates DAC for addresses < 4GB whenever enabling
support for 64-bit addresses, then that is very broken.
That is what happens.
Please don't complain that I didn't spend hours searching
through the archives looking for a message from months? years? ago
that I didn't know existed.
Weeks, if not days.
> I think for SAC-only devices, it is just dumb wasted space in the
> driver image.
Perhaps. But the question is whether it is simpler/better to have
HIGHMEM x86 kernels (which by definition have memory to spare) waste
a few bytes to provide "sane" interfaces across all platforms. And
whether the kernel bloat for all the additional functions compensates
for it ;-)
The plain fact is that %95 of PCI devices do not support DAC
addressing.
Later,
David S. Miller
davem@redhat.com
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This archive was generated by hypermail 2b29 : Thu Aug 23 2001 - 21:00:53 EST