Re: [PATCH] x86: vmlinux_64.lds.S - use THREAD_SIZE instead ofnumeric constant

[Ingo Molnar]

* Sam Ravnborg <sam@xxxxxxxxxxxx> wrote:

> Hi Cyrill.
> On Mon, Feb 04, 2008 at 08:10:37PM +0300, Cyrill Gorcunov wrote:
> > Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
> 
> The patch looks simple but please explain why you do what you do. It 
> took me some digging before I could convince mysleft this was indeed a 
> correct change. And I am pretty sure you did the same investigation 
> yourself.
> 
> A comment like:
> 
> arch/x866/kernel/inittask.c require all variables allocated in
> the section .data.init_task to be aligned with THREAD_SIZE.
> 
> would have made me happy.

Btw., given that on x86 we've moved away from the %esp based task stack 
trick and use an %fs based Percpu-Data-Area (PDA) to access the current 
task pointer, this alignment might not be necessary anymore. It's a 
historic relic of the mask-%esp trick.

	Ingo
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