Re: [Patch 1/7] x86: add CONFIG_KEXEC_AUTO_RESERVE

Neil Horman
2009-08-05T13:42:19Z

On Wed, Aug 05, 2009 at 07:19:12AM -0400, Amerigo Wang wrote:
>
> Introduce a new config option KEXEC_AUTO_RESERVE for x86.
>
> Signed-off-by: WANG Cong <amwang@redhat.com>
>
> ---
> Index: linux-2.6/arch/x86/Kconfig
> ===================================================================
> --- linux-2.6.orig/arch/x86/Kconfig
> +++ linux-2.6/arch/x86/Kconfig
> @@ -1482,6 +1482,16 @@ 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 x86, 128M is reserved.
> +
> config CRASH_DUMP
> bool "kernel crash dumps"
> depends on X86_64 || (X86_32 && HIGHMEM)

Acked-by: Neil Horman <nhorman@tuxdriver.com>