IRP_MN_READ_CONFIG and NonPagePool

I would like to gather the PCI configuration
information for a computer by enumarting each all of
the devices devices on all buses. I do not not want to
use the registry and halgetbus data is depricated and
soon to be exinct. This was easy to do in NT4
(solution example 7b). The DDL recommends using
IRP_MN_READ_CONFIG and Holis give an example for the
current pdo and device for XP. Any ideas or examples
for all devices on all buses?
Also how to get the overall size of NonPagePool?
Any help greatly appreciated.
Thanx
Dave Sharp


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