KeGetCurrentProcessorNumber() Failed

NTDEV
1

Hi Guys

i have 4 intel processor on my system but when i called KeGetCurrentProcessorNumber() it returns me 0xff . so is it current value? i think value range should be (0-3).

my os is window xp sp3.

2

xxxxx@gmail.com wrote:

i have 4 intel processor on my system but when i called KeGetCurrentProcessorNumber() it returns me 0xff . so is it current value? i think value range should be (0-3).

The range will be 0-3. Where did you see the 0xff? How did you view
the value? Show us your code.

–
Tim Roberts, xxxxx@probo.com
Providenza & Boekelheide, Inc.

3

DbgPrint(“CurrentProcessorNumber %lx\n”, KeGetCurrentProcessorNumber());

CCHAR CurrentCPU ;

CurrentCPU = KeGetCurrentProcessorNumber();

4

Is that the actual code, as in you copied from your source file and pasted it here?

The reason I ask is that the last two lines have nothing to do with the display problem as displayed, are also incorrect, and I don’t think would compile without at least a warning and probably an error.

ULONG KeGetCurrentProcessorNumber(VOID)

So:

ULONG CurrentCPU = KeGetCurrentProcessorNumber();

mm

5

ya it’s actual code.

6

and i have also done as said

ULONG CurrentCPU = KeGetCurrentProcessorNumber();

but no luck still 0xff value.