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Message-ID: <20090805134928.GH7259@hmsreliant.think-freely.org>
Date: Wed, 5 Aug 2009 09:49:28 -0400
From: Neil Horman <nhorman@...hat.com>
To: Amerigo Wang <amwang@...hat.com>
Cc: linux-kernel@...r.kernel.org, tony.luck@...el.com,
linux-ia64@...r.kernel.org,
"Eric W. Biederman" <ebiederm@...ssion.com>,
akpm@...ux-foundation.org, Ingo Molnar <mingo@...e.hu>,
Anton Vorontsov <avorontsov@...mvista.com>
Subject: Re: [Patch 5/7] powerpc: add CONFIG_KEXEC_AUTO_RESERVE
On Wed, Aug 05, 2009 at 07:19:51AM -0400, Amerigo Wang wrote:
>
> Introduce a new config option KEXEC_AUTO_RESERVE for powerpc.
>
> Signed-off-by: WANG Cong <amwang@...hat.com>
>
> ---
> Index: linux-2.6/arch/powerpc/Kconfig
> ===================================================================
> --- linux-2.6.orig/arch/powerpc/Kconfig
> +++ linux-2.6/arch/powerpc/Kconfig
> @@ -346,6 +346,16 @@ config KEXEC
> support. As of this writing the exact hardware interface is
> strongly in flux, so no good recommendation can be made.
>
> +config KEXEC_AUTO_RESERVE
> + bool "automatically reserve memory for kexec kernel"
> + depends on KEXEC
> + default y
> + ---help---
> + Automatically reserve memory for a kexec kernel, so that you don't
> + need to specify numbers for the "crashkernel=X@Y" boot option,
> + instead you can use "crashkernel=auto".
> + On PPC, 256M is reserved and only when you have memory > 4G.
> +
> config CRASH_DUMP
> bool "Build a kdump crash kernel"
> depends on PPC64 || 6xx
Acked-by: Neil Horman <nhorman@...driver.com>
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