[PATCH v2] powernv: kvm: make _PAGE_NUMA take effect
Aneesh Kumar K.V
aneesh.kumar at linux.vnet.ibm.com
Mon Apr 7 17:42:29 EST 2014
Alexander Graf <agraf at suse.com> writes:
> On 03.04.14 04:36, Liu ping fan wrote:
>> Hi Alex, could you help to pick up this patch? since v3.14 kernel can
>> enable numa fault for powerpc.
> What bad happens without this patch? We map a page even though it was
> declared to get NUMA migrated? What happens next?
Nothing much, we won't be properly accounting the numa access in the
host. What we want to achieve is to convert a guest access of the page to
a host fault so that we can do proper numa access accounting in the
host. This would enable us to migrate the page to the correct numa
> I'm trying to figure out whether I need to mark this with a stable tag
> for 3.14.
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