linux-kernel - Re: [PATCH 3/5] arm64: kdump: do not go into EL2 before starting a crash dump kernel

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Date:	Thu, 26 Mar 2015 15:29:17 -0700
From:	Geoff Levand <geoff@...radead.org>
To:	AKASHI Takahiro <takahiro.akashi@...aro.org>
Cc:	catalin.marinas@....com, will.deacon@....com, vgoyal@...hat.com,
	hbabus@...ibm.com, broonie@...nel.org, david.griego@...aro.org,
	kexec@...ts.infradead.org, linux-arm-kernel@...ts.infradead.org,
	linaro-kernel@...ts.linaro.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/5] arm64: kdump: do not go into EL2 before starting a
 crash dump kernel

On Thu, 2015-03-26 at 17:28 +0900, AKASHI Takahiro wrote:
> @@ -64,7 +65,11 @@ void soft_restart(unsigned long addr)
>  	setup_mm_for_reboot();
>  
>  	cpu_soft_restart(virt_to_phys(cpu_reset),
> -		is_hyp_mode_available(), addr);
> +#ifdef CONFIG_KEXEC
> +		!in_crash_kexec &&
> +#endif

Why not define in_crash_kexec without condition on CONFIG_KEXEC, say
here in process.c and then avoid these preprocessor conditionals.

> +		is_hyp_mode_available(),
> +		addr);
>  
>  	/* Should never get here */
>  	BUG();



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