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Message-ID: <c26b959205030809271b8a5886@mail.gmail.com>
Date: Tue, 8 Mar 2005 22:57:26 +0530
From: Imanpreet Arora <imanpreet@gmail.com>
Reply-To: Imanpreet Arora <imanpreet@gmail.com>
To: Robert Love <rml@novell.com>
Subject: Re: Question regarding thread_struct
Cc: linux-kernel@vger.kernel.org
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On Tue, 08 Mar 2005 12:13:20 -0500, Robert Love <rml@novell.com> wrote:
> On Tue, 2005-03-08 at 22:34 +0530, Imanpreet Arora wrote:
> 
> >       I am wondering if someone could provide information as to how
> > thread_struct is kept in memory. Robert Love mentions that it is kept
> > at the "lowest"  kernel address in case of x86 based platform. Could
> > anyone answer these questions.
> 
> Kernel _stack_ address for the given process.
> 
> > a)    When a stack is resized, is the thread_struct structure copied onto
> > a new place?
> 
> This is the kernel stack, not any potential user-space stack.  Kernel
> stacks are not resized.

This has been a doubt for a couple of days, and I am wondering if this
one could also be cleared. When you say kernel stack, can't be resized


a)       Does it mean that the _whole_ of the kernel is restricted to
that 8K or 16K of memory?

b)        Or does it mean that a particular stack for a particular
process, can't be resized?

c)         And for that matter how exactly do we define a kernel stack?

TIA                     
-- 

Imanpreet Singh Arora
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