Message-ID: <5398D691.7050202@intel.com>
Date: Wed, 11 Jun 2014 15:22:09 -0700
From: Dave Hansen <dave.hansen@intel.com>
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To: David Rientjes <rientjes@google.com>,
        Andrew Morton <akpm@linux-foundation.org>
CC: Zhang Zhen <zhenzhang.zhang@huawei.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>, laijs@cn.fujitsu.com,
        sjenning@linux.vnet.ibm.com, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org, Wang Nan <wangnan0@huawei.com>
Subject: Re: [patch] mm, hotplug: probe interface is available on several
 platforms
References: <53981D81.5060708@huawei.com> <alpine.DEB.2.02.1406111503050.27885@chino.kir.corp.google.com> <alpine.DEB.2.02.1406111511450.27885@chino.kir.corp.google.com>
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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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