On Thu, Apr 21, 2011 at 4:00 PM, Sasha Levin <[email protected]> wrote:
> It's an alternative to creating more swap.
> When using large RAM sizes for guests on hosts with limited physical
> RAM/swap this option gives the user a way to use files instead of swap.

Well, I don't still quite see the point of this feature. Is there some
real world use for running guests with huge memory space that's
swap-backed?

On Thu, Apr 21, 2011 at 4:00 PM, Sasha Levin <[email protected]> wrote:
> This can also be extended to use hugetlbfs.

Recent Linux kernels support transparent hugepages so you can do
MADV_HUGEPAGE on mmap'd memory.
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