Re: [PATCH v3 0/5] hugetlb: add support gigantic page allocation at runtime

From: Andrew Morton
Date: Thu Apr 17 2014 - 19:01:23 EST


On Thu, 10 Apr 2014 13:58:40 -0400 Luiz Capitulino <lcapitulino@xxxxxxxxxx> wrote:

> The HugeTLB subsystem uses the buddy allocator to allocate hugepages during
> runtime. This means that hugepages allocation during runtime is limited to
> MAX_ORDER order. For archs supporting gigantic pages (that is, page sizes
> greater than MAX_ORDER), this in turn means that those pages can't be
> allocated at runtime.

Dumb question: what's wrong with just increasing MAX_ORDER?
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