linux-kernel - Re: [PATCH] x86/vdso: Add prctl to set per-process VDSO load

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Message-ID: <8738brhzoc.fsf@tassilo.jf.intel.com>
Date:	Tue, 16 Sep 2014 17:13:23 -0700
From:	Andi Kleen <andi@...stfloor.org>
To:	linux-kernel@...r.kernel.org
Cc:	linux-api@...r.kernel.org
Subject: Re: [PATCH] x86/vdso: Add prctl to set per-process VDSO load

Richard Larocque <rlarocque@...gle.com> writes:

Perhaps I'm missing something, but how do you modify the AUX vector
for the children?
  
> +config VDSO_DISABLE_PRCTL
> +	depends on X86
> +	bool "prctl to disable VDSO loading"
> +	---help---
> +	  Enabling this option adds support for prctl calls that
> +	  set and retrieve a per-process flag to disable VDSO loading on
> +	  exec() for this process and all of its children.

I don't think it makes any sense to have a config for a simple
feature like this. Just do it unconditionally.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only

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