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Re: [Xen-devel] WTH is going on with memory hotplug sysf interface (was: Re: [RFC PATCH] mm, hotplug: get rid of auto_online_blocks)
- To: Michal Hocko <mhocko@xxxxxxxxxx>
- From: Andi Kleen <ak@xxxxxxxxxxxxxxx>
- Date: Mon, 13 Mar 2017 16:16:04 -0700
- Cc: xieyisheng1@xxxxxxxxxx, toshi.kani@xxxxxxx, iamjoonsoo.kim@xxxxxxx, Heiko Carstens <heiko.carstens@xxxxxxxxxx>, Zhang Zhen <zhenzhang.zhang@xxxxxxxxxx>, Tang Chen <tangchen@xxxxxxxxxxxxxx>, linux-mm@xxxxxxxxx, qiuxishi@xxxxxxxxxx, "K. Y. Srinivasan" <kys@xxxxxxxxxxxxx>, linux-s390@xxxxxxxxxxxxxxx, Daniel Kiper <daniel.kiper@xxxxxxxxxx>, linux-acpi@xxxxxxxxxxxxxxx, David Rientjes <rientjes@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, Reza Arbab <arbab@xxxxxxxxxxxxxxxxxx>, Yasuaki Ishimatsu <yasu.isimatu@xxxxxxxxx>, slaoub@xxxxxxxxx, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, vbabka@xxxxxxx, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, linux-api@xxxxxxxxxxxxxxx, Igor Mammedov <imammedo@xxxxxxxxxx>, Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
- Delivery-date: Tue, 14 Mar 2017 04:53:01 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
> and ARCH_SPARSEMEM_DEFAULT is enabeld on 64b. So I guess whatever was
> the reason to add this code back in 2006 is not true anymore. So I am
> really wondering. Do we absolutely need to assign pages which are not
> onlined yet to the ZONE_NORMAL unconditionally? Why cannot we put them
> out of any zone and wait for memory online operation to put them where
> requested?
I don't remember any specific reason. May have just been simplification.
Should be fine to use any zone.
-Andi
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- References:
- Re: [Xen-devel] [RFC PATCH] mm, hotplug: get rid of auto_online_blocks
- Re: [Xen-devel] [RFC PATCH] mm, hotplug: get rid of auto_online_blocks
- Re: [Xen-devel] [RFC PATCH] mm, hotplug: get rid of auto_online_blocks
- Re: [Xen-devel] [RFC PATCH] mm, hotplug: get rid of auto_online_blocks
- Re: [Xen-devel] [RFC PATCH] mm, hotplug: get rid of auto_online_blocks
- Re: [Xen-devel] [RFC PATCH] mm, hotplug: get rid of auto_online_blocks
- Re: [Xen-devel] [RFC PATCH] mm, hotplug: get rid of auto_online_blocks
- [Xen-devel] WTH is going on with memory hotplug sysf interface (was: Re: [RFC PATCH] mm, hotplug: get rid of auto_online_blocks)
- Re: [Xen-devel] WTH is going on with memory hotplug sysf interface (was: Re: [RFC PATCH] mm, hotplug: get rid of auto_online_blocks)
- Re: [Xen-devel] WTH is going on with memory hotplug sysf interface (was: Re: [RFC PATCH] mm, hotplug: get rid of auto_online_blocks)
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