Re: [RFC] Arch option to touch newly allocated pages

Jeff Dike
2002-03-05T04:38:54Z

bcrl@redhat.com said:
> From your explanation of things, you only need to do the memsets once
> at startup of UML where the ram is allocated -> a uml booted with
> 64MB of ram would write into every page of the backing store file
> before even running the kernel. Doesn't that accomplish the same
> thing?

Sort of, but it's very heavy-handed. The UML will force memory to be
allocated on the host long before it will ever be needed, and it may never
be needed. This patch doesn't waste memory like that.

Jeff