[PATCH v5 2/4] sparc: Advertise gigantic page support

[David Miller]

From: Alexandre Ghiti <alex at ghiti.fr>
Date: Wed,  6 Mar 2019 14:00:03 -0500

> sparc actually supports gigantic pages and selecting
> ARCH_HAS_GIGANTIC_PAGE allows it to allocate and free
> gigantic pages at runtime.
> 
> sparc allows configuration such as huge pages of 16GB,
> pages of 8KB and MAX_ORDER = 13 (default):
> HPAGE_SHIFT (34) - PAGE_SHIFT (13) = 21 >= MAX_ORDER (13)
> 
> Signed-off-by: Alexandre Ghiti <alex at ghiti.fr>

Much better.

Acked-by: David S. Miller <davem at davemloft.net>