From: "David S. Miller" <davem@davemloft.net>
To: akpm@osdl.org
Cc: kyle@parisc-linux.org, torvalds@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Generic is_compat_task helper
Date: Thu, 16 Feb 2006 23:03:18 -0800 (PST) [thread overview]
Message-ID: <20060216.230318.21310500.davem@davemloft.net> (raw)
In-Reply-To: <20060216214939.78aebcbb.akpm@osdl.org>
From: Andrew Morton <akpm@osdl.org>
Date: Thu, 16 Feb 2006 21:49:39 -0800
> Kyle McMartin <kyle@parisc-linux.org> 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.
next prev parent reply other threads:[~2006-02-17 7:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-17 2:52 Kyle McMartin
2006-02-17 5:49 ` Andrew Morton
2006-02-17 5:58 ` Paul Mackerras
2006-02-17 6:01 ` Stephen Rothwell
2006-02-17 7:03 ` David S. Miller [this message]
2006-02-17 7:45 ` Issue in using more number of devices with BFS setup in AS4 Srikanth Venkataraman
2006-02-17 14:11 ` [PATCH] Generic is_compat_task helper Kyle McMartin
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