kernel32/process: Implement GetLogicalProcessorInformation (rewrite - try 3)

Rudolf Mayerhofer rm at
Mon Oct 4 13:18:48 CDT 2010

>I don't know much about kernel32/ntdll, but I'm pretty sure that you
>could get this to work through ntdll. NtQuerySystemInformation with
>SystemProcessorInformation/SystemLogicalProcessorInformation (see
>should help.
>(read, don't copy) seems to have a pretty exhaustive set of
>definitions, but even that's not complete. Some tests for the NT
>version would be useful.

SystemLogicalProcessorInformation seems to be the right SystemClass for 
NtQuerySystemInformation. But here's the Problem. I don't have any idea how i 
could any information about the struct returned by calling 
NtQuerySystemInformation with SystemLogicalProcessorInformation (= 73). 

The only windows machine i have access to a the moment keeps throwing status 
0xC0000005 (ACCESS_VIOLATION) at me which doesn't help at all and i'm pretty 
much stuck right now. If i could get my hands on the struct returned by 
NtQuerySystemInformation it should be easy to change the patch to do the 
parsing in ntdll and just call that from kernel32.

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