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Old 07-10-2004, 11:32 AM   #1
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Registered: Jul 2004
Location: Sweden
Distribution: ARM Linux
Posts: 1

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Shared virtual pointers in kernel space

Hi everyone,

one of my drivers is allocating about 2 MBs of memory using vmalloc(). Will the virtual address pointer be valid if I pass it on to another driver (also running in kernel space)? Am I missing something here?

I'm getting some strange behaviour, it seems like this passed virtual pointer points to another part of physical memory compared to the driver that allocated it.

The drivers are executing in the same kernel thread.

Old 07-12-2004, 03:27 AM   #2
Registered: Jul 2003
Location: bangalore . india
Distribution: openSUSE 10.3
Posts: 251

Rep: Reputation: 33
umm..if you make it an exported symbol, i guess you should be able to see it from other driver too. ..but by default i dont know if you'd be able to see it...


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