Messages in this thread | | | Date | Tue, 15 Jun 1999 11:42:54 -0700 | From | Mark Jefferys <> | Subject | Re: holes for ISA boards... |
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On Sun, Jun 13, 1999 at 12:11:56PM +0100, Stephen Early wrote:
% ACPI is a bit of a red herring here; the int 0x15, eax=0xe820 BIOS % call has been around longer than the ACPI spec. The ACPI people just % extended it with two new memory range types, to support their own % configuration information; code unaware of the ACPI spec. will see % those regions as unusable.
Interesting.
% I haven't found any Pentium-class motherboard that does not support % this call. I have found older motherboards that don't, and one which % gives odd results ("Out of memory" error when the call is made!) - % which is one reason I didn't submit the patch when I wrote it.
It might be reasonable to blacklist the motherboard. Since the old calls work, presumably, I imagine it might also be possible to validate the memory range info against the older memory info, seeing if the results are compatible. I'm curious: what exactly does that odd motherboard do?
Mark
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