Re: how to detect a 32 bit process on 64 bit kernel

Christoph Hellwig
2004-12-12T22:23:27Z

On Sun, Dec 12, 2004 at 11:51:10PM +0200, Michael S. Tsirkin wrote:
> Hello!
> Is there a reliable way e.g. on x86-64 (or ia64, or any other
> 64-bit system), from the char device driver,
> to find out that I am running an operation in the context of a 32-bit
> task?

There's no way that's both reliable and portable.

> If no - would not it make a sence to add e.g. a flag in the
> task struct, to make it possible?

The kernel code shouldn't know. If your driver needs this information
something is seriously wrong with it.