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Date: Tue, 17 Jan 2012 18:05:12 +0100
From: Oleg Nesterov <oleg@redhat.com>
To: Andrew Lutomirski <luto@mit.edu>
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Subject: Re: [RFC,PATCH 1/2] seccomp_filters: system call filtering using
	BPF
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On 01/17, Andrew Lutomirski wrote:
>
> (is_compat_task says whether the executable was marked as 32-bit.  The
> actual execution mode is determined by the cs register, which the user
> can control.

Confused... Afaics, TIF_IA32 says that the binary is 32-bit (this comes
along with TS_COMPAT).

TS_COMPAT says that, say, the task did "int 80" to enters the kernel.
64-bit or not, we should treat is as 32-bit in this case.

No?

Oleg.