linux-kernel - Re: Why is arch/x86/kernel/acpi/sleep.c:temp

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Message-ID: <20081009085649.GC29957@atrey.karlin.mff.cuni.cz>
Date:	Thu, 9 Oct 2008 10:56:49 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	Matt Mackall <mpm@...enic.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-acpi@...r.kernel.org
Subject: Re: Why is arch/x86/kernel/acpi/sleep.c:temp_stack 10k?


> We've got:
> 
> #if defined(CONFIG_SMP) && defined(CONFIG_64BIT)
> static char temp_stack[10240];
> #endif
> 
> and:
> 
> #ifdef CONFIG_SMP
>         stack_start.sp = temp_stack + 4096;
> #endif
> 
> ..which suggests we use at most 4k of the stack?

I guess someone (probably me) was "playing it safe" -- not exactly
remembering if stack grows down or up. I guess it should be safe to
change it... will do that.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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