Re: [Xen-devel] Re: [PATCH 0/6] xen: don't call vmalloc_sync_all()when mapping foreign pages

[Jeremy Fitzhardinge]

On 09/21/2011 03:42 AM, Stefano Stabellini wrote:
> On Thu, 15 Sep 2011, Jeremy Fitzhardinge wrote:
>> This series is relying on regular ram mappings are already synced to all
>> tasks, but I'm not sure that's necessarily guaranteed (for example, if
>> you hotplug new memory into the domain, the new pages won't be mapped
>> into every mm unless they're synced).
> the series is using GFP_KERNEL, so this problem shouldn't occur, right?

What properties do you think GFP_KERNEL guarantees?

    J
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