Re: [PATCH] Generic is_compat_task helper

[David S. Miller]

From: Andrew Morton <akpm@xxxxxxxx>
Date: Thu, 16 Feb 2006 21:49:39 -0800

> Kyle McMartin <kyle@xxxxxxxxxxxxxxxx> wrote:
> >
> > +static inline int __is_compat_task(struct task_struct *t)
> > +{
> > +	return (personality(t->personality) == PER_LINUX32);
> > +}
> > +
> 
> What continues to bug me about this (in a high-level hand-wavy sort of way)
> is that this is an attribute of the mm_struct, not of the task_struct.

It's an attribute of the "system call being invoked right now".
So you can emulate ia32 apps on ia64 or x86_64 by just trapping
to the 32-bit system calls directly, and stuff like that.
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