Messages in this thread | | | Date | Wed, 22 Aug 2001 19:26:00 -0700 (PDT) | Subject | Re: With Daniel Phillips Patch | From | "David S. Miller" <> |
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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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