linux-kernel - Re: mm/Kconfig MEMORY

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Message-ID: <20070720123649.GA27743@linux-sh.org>
Date:	Fri, 20 Jul 2007 21:36:49 +0900
From:	Paul Mundt <lethal@...ux-sh.org>
To:	Gabriel C <nix.or.die@...glemail.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: mm/Kconfig MEMORY_HOTPLUG typo ?

On Fri, Jul 20, 2007 at 02:23:48PM +0200, Gabriel C wrote:
> I'm a bit confused about the following from mm/Kconfig:
> 
> ..
> 
> config MEMORY_HOTPLUG
>         bool "Allow for memory hot-add"
>         depends on SPARSEMEM || X86_64_ACPI_NUMA
>         depends on HOTPLUG && !SOFTWARE_SUSPEND && ARCH_ENABLE_MEMORY_HOTPLUG
>         depends on (IA64 || X86 || PPC64 || SUPERH)
> 
MEMORY_HOTPLUG is only supported if !SOFTWARE_SUSPEND

> comment "Memory hotplug is currently incompatible with Software Suspend"
>         depends on SPARSEMEM && HOTPLUG && SOFTWARE_SUSPEND
> 
> 
> ...
> 
> That should be !SOFTWARE_SUSPEND no ?
> 
However, we only give the comment that warns about the incompatability
when SOFTWARE_SUSPEND is enabled, otherwise people won't see the option
due to the unmet dependency.
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