linux-kernel - Re: [PATCH] x86/vdso: use NULL instead of zero

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Date:	Tue, 16 Sep 2014 10:36:18 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Michele Curti <michele.curti@...il.com>
Cc:	x86@...nel.org, tglx@...utronix.de, mingo@...hat.com,
	hpa@...or.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86/vdso: use NULL instead of zero


* Michele Curti <michele.curti@...il.com> wrote:

> 
> x86/vdso: use NULL instead of zero in patch_vdso32()
> 
> Signed-off-by: Michele Curti <michele.curti@...il.com>
> 
> diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c
> index 1ad1026..a4647bc 100644
> --- a/arch/x86/vdso/vma.c
> +++ b/arch/x86/vdso/vma.c
> @@ -34,7 +34,7 @@ static unsigned vdsox32_size;
>  void __init patch_vdso32(void *vdso, size_t len)
>  {
>  	Elf32_Ehdr *hdr = vdso;
> -	Elf32_Shdr *sechdrs, *alt_sec = 0;
> +	Elf32_Shdr *sechdrs, *alt_sec = NULL;
>  	char *secstrings;
>  	void *alt_data;
>  	int i;

Your patch does not apply, this code got significantly reworked 
in the following commit, earlier this year:

  6f121e548f83 x86, vdso: Reimplement vdso.so preparation in build-time C

Thanks,

	Ingo
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