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Allocating HugeTLB pages in kernel space

Posted by bob 
How can you allocate a HugeTLB page in a device driver? If I allocate a page using __GFP_COMP, does this make it a compound HugeTLB page, or do I have to do something else to make it one?

I've found lots of pages on google about doing this in user space, but nothing about how to do it in kernel space.

Thanks
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