Re: [Xen-devel] [PATCH v2] xen/gntdev: Use mempolicy instead of VM_IO flag to avoid NUMA balancing

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 11/17/2016 11:01 AM, Olaf Hering wrote:
> On Thu, Nov 17, Boris Ostrovsky wrote:
>
>> On 11/17/2016 06:28 AM, Olaf Hering wrote:
>>> ERROR: "__mpol_dup" [drivers/xen/xen-gntdev.ko] undefined!
>>> ERROR: "get_task_policy" [drivers/xen/xen-gntdev.ko] undefined!
>> I just built 4.4.11 with this patch applied and haven't had any problems.
> Are these functions exported? How would the driver module call into the
> core kernel? Maybe the added functionality should be provided by an
> exported helper function.

You are right --- I didn't realize was building with grant device
built-in. So yes, this needs to be fixed.

-boris

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