linux-kernel - Re: [patch] mm, hotplug: probe interface is available on several platforms

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Message-ID: <5398D691.7050202@intel.com>
Date:	Wed, 11 Jun 2014 15:22:09 -0700
From:	Dave Hansen <dave.hansen@...el.com>
To:	David Rientjes <rientjes@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>
CC:	Zhang Zhen <zhenzhang.zhang@...wei.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	laijs@...fujitsu.com, sjenning@...ux.vnet.ibm.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Wang Nan <wangnan0@...wei.com>
Subject: Re: [patch] mm, hotplug: probe interface is available on several
 platforms

On 06/11/2014 03:15 PM, David Rientjes wrote:
> +CONFIG_ARCH_MEMORY_PROBE and can be configured on powerpc, sh, and x86
> +if hotplug is supported, although for x86 this should be handled by ACPI
> +notification.

Looks like a good change, in general.

My only nit is that this implies that all hotplug on x86 is ACPI-based,
which isn't true.  Xen, at least, has an extension to its ballooning
that does hotplugs without ACPI.
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