linux-kernel - Re: [PATCH] ARM: move body of head-common.S back to text section

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Date:	Tue, 2 Jul 2013 16:22:59 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Russell King <linux@....linux.org.uk>,
	Will Deacon <will.deacon@....com>,
	linux-kernel@...r.kernel.org, Joseph Lo <josephl@...dia.com>,
	linux-tegra@...r.kernel.org, Stephen Warren <swarren@...dia.com>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: move body of head-common.S back to text section

On 07/02, Stephen Warren wrote:
> From: Stephen Warren <swarren@...dia.com>
> 
> Commit 281ecb7 "arm: delete __cpuinit/__CPUINIT usage from all ARM
> users" removed a __CPUINIT from head-common.S. However, the code
> immediately before the removed tag was marked __INIT, and was missing
> a match __FINIT. This caused code after the removed __CPUINIT to end
> up in the init section rather than the main text section as desired.
> This caused issues such as secondary CPU boot failures or crashes.
> Add the missing __FINIT to solve this.
> 
> Signed-off-by: Stephen Warren <swarren@...dia.com>
> ---
>  arch/arm/kernel/head-common.S | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/kernel/head-common.S b/arch/arm/kernel/head-common.S
> index 529ce99..a9dc804 100644
> --- a/arch/arm/kernel/head-common.S
> +++ b/arch/arm/kernel/head-common.S
> @@ -122,6 +122,8 @@ __mmap_switched_data:
>  	.long	init_thread_union + THREAD_START_SP @ sp
>  	.size	__mmap_switched_data, . - __mmap_switched_data
>  
> +	__FINIT
> +
>  /*
>   * This provides a C-API version of __lookup_processor_type
>   */

Shouldn't this come after lookup_processor_type()? Otherwise you
just removed that function from the init section?

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