Re: Question regarding thread_struct

[Coywolf Qi Hunt <coywolf@gmail.com>]

On Tue, 08 Mar 2005 12:28:42 -0500, Robert Love <rml@novell.com> wrote:
> On Tue, 2005-03-08 at 22:57 +0530, Imanpreet Arora wrote:
> 
> > 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?
> 
> Actually, 4K or 8K these days for x86.  But, no, it means that EACH
> PROCESS is constrained to the kernel stack.  The stacks are per-process.
> The kernel never "runs on its own" -- it is always in the context of a
> process (which has its own kernel stack) or an interrupt handler (which
> either shares the previous process's stack or has its own stack,
> depending on CONFIG_IRQSTACKS).
 

CONFIG_IRQSTACKS seems only on ppc64. Is it good to add for other archs too?


Regards
-- 
Coywolf Qi Hunt
Homepage http://sosdg.org/~coywolf/