Re: [PATCH v7 2/5] mm: remove x86-only restriction of movable_node

From	Reza Arbab <arbab@linux.vnet.ibm.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v7 2/5] mm: remove x86-only restriction of movable_node
Date	2016-11-15 17:00 +0100
Message-ID	<sDOjo-6QT-21@gated-at.bofh.it> (permalink)
References	<sDxBT-4rC-7@gated-at.bofh.it> <sDxBU-4rC-35@gated-at.bofh.it> <sDG2t-1Lo-11@gated-at.bofh.it>
Organization	IBM Linux Technology Center

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On Tue, Nov 15, 2016 at 12:35:42PM +0530, Aneesh Kumar K.V wrote:
>Considering that we now can mark memblock hotpluggable, do we need to
>enable the bottom up allocation for ppc64 also ?

No, we don't, because early_init_dt_scan_memory() marks the memblocks 
hotpluggable immediately when they are added. There is no gap between 
the addition and the marking, as there is on x86, during which an 
allocation might accidentally occur in a movable node.

-- 
Reza Arbab

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[PATCH v7 0/5] enable movable nodes on non-x86 configs Reza Arbab <arbab@linux.vnet.ibm.com> - 2016-11-14 23:10 +0100
  [PATCH v7 4/5] of/fdt: mark hotpluggable memory Reza Arbab <arbab@linux.vnet.ibm.com> - 2016-11-14 23:10 +0100
    Re: [PATCH v7 4/5] of/fdt: mark hotpluggable memory Balbir Singh <bsingharora@gmail.com> - 2016-11-15 00:40 +0100
  [PATCH v7 2/5] mm: remove x86-only restriction of movable_node Reza Arbab <arbab@linux.vnet.ibm.com> - 2016-11-14 23:10 +0100
    Re: [PATCH v7 2/5] mm: remove x86-only restriction of movable_node Balbir Singh <bsingharora@gmail.com> - 2016-11-15 00:30 +0100
    Re: [PATCH v7 2/5] mm: remove x86-only restriction of movable_node "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> - 2016-11-15 08:10 +0100
      Re: [PATCH v7 2/5] mm: remove x86-only restriction of movable_node Reza Arbab <arbab@linux.vnet.ibm.com> - 2016-11-15 17:00 +0100

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