linux-kernel - Re: [PATCH] x86: reduce back the alignment of the per-CPU data section

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Message-Id: <1297241252.30625.1419727165@webmail.messagingengine.com>
Date:	Wed, 09 Feb 2011 09:47:32 +0100
From:	"Alexander van Heukelum" <heukelum@...tmail.fm>
To:	"Jan Beulich" <JBeulich@...ell.com>, "Ingo Molnar" <mingo@...e.hu>,
	"Thomas Gleixner" <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: reduce back the alignment of the per-CPU data section

Hi Jan,

This is indeed a leftover. Thanks.

This was once done to fix i386-UP, because the irq stacks were part of the percpu area. The stacks are now allocated dynamically.

Acked-by: Alexander van Heukelum <heukelum@...tmail.fm>

Greetings,
    Alexander

On Wed, 09 Feb 2011 08:22 +0000, "Jan Beulich" <JBeulich@...ell.com> wrote:
> This complements commit 47f19a0814e80e1d4e5c17d61b70fca85ea09162,
> reverting one leftover of fe8e0c25cad28e8858ecfa5863333c70685a6811.
> 
> Signed-off-by: Jan Beulich <jbeulich@...ell.com>
> Cc: Alexander van Heukelum <heukelum@...tmail.fm>
> 
> ---
>  arch/x86/kernel/vmlinux.lds.S |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> --- 2.6.38-rc4/arch/x86/kernel/vmlinux.lds.S
> +++ 2.6.38-rc4-x86-percpu-align/arch/x86/kernel/vmlinux.lds.S
> @@ -305,7 +305,7 @@ SECTIONS
>  	}
>  
>  #if !defined(CONFIG_X86_64) || !defined(CONFIG_SMP)
> -       PERCPU(THREAD_SIZE)
> +       PERCPU(PAGE_SIZE)
>  #endif
>  
>  	. = ALIGN(PAGE_SIZE);
> 
> 
> 
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