linux-kernel - Re: [RFC PATCH 8/8] ARM: vmlinux.lds: Setup correct entry point to physical address

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Message-ID: <20120618113716.GG12029@n2100.arm.linux.org.uk>
Date:	Mon, 18 Jun 2012 12:37:16 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Michal Simek <monstr@...str.eu>
Cc:	linux-kernel@...r.kernel.org, Marc Zyngier <marc.zyngier@....com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Will Deacon <will.deacon@....com>,
	Rob Herring <rob.herring@...xeda.com>,
	Nicolas Pitre <nicolas.pitre@...aro.org>,
	linux-arm-kernel@...ts.infradead.org,
	Ohad Ben-Cohen <ohad@...ery.com>,
	Peter Crosthwaite <peter.crosthwaite@...alogix.com>
Subject: Re: [RFC PATCH 8/8] ARM: vmlinux.lds: Setup correct entry point to
	physical address

On Mon, Jun 18, 2012 at 01:30:11PM +0200, Michal Simek wrote:
> linker script setups entry point to virtual address.
> 
> Signed-off-by: Michal Simek <monstr@...str.eu>
> 
> ---
> Not sure what is the reason to setup entry point to virtual address.
> ---
>  arch/arm/kernel/vmlinux.lds.S |    4 +++-
>  1 files changed, 3 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
> index b996bc0..de43b01 100644
> --- a/arch/arm/kernel/vmlinux.lds.S
> +++ b/arch/arm/kernel/vmlinux.lds.S
> @@ -39,7 +39,7 @@
>  #endif
>  
>  OUTPUT_ARCH(arm)
> -ENTRY(stext)
> +ENTRY(arm_start)

stext etc better stay as the virtual address through this change.  The
kernel makes use of all stext/etext etc symbols as virtual addresses.
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