get/put_user() on SMP system

[Mark Hapke <mah@tzi.de>]

Hello.

This posting is related to the one before ("put/get_user problems on 
SMP-System"). I am working on dual P3 system at 933Mhz with 1G RAM and a 
ServerWorks CNB20LE (rev 05) chipset. Kernel version is 2.4.9. The 
system is compatible to Intel MP Spec. 1.1.

The situation is that i want to copy several unsigned long value from my 
invoked ISR in kernel space to user space. The driver, in which the ISR 
is included, gets some pointers to indexes and these should be updated 
through the ISR. In this special case the ISR will definitly be running 
on another cpu then the process whose indexes should be updated. This 
does not work, only when ISR and process are executed on the same cpu.

Looking at the definition of
__put_user_asm(x, addr, err, itype, rtype, ltype)

I see no reason why this should not work (this is obviously my problem 
=:-)) Can someone help me here?


Thanks,
Mark