Re: [PATCH v1] mm: initialize pages on demand during boot

2018-01-24 Thread Pavel Tatashin
Hi Andrew, > Presumably this fixes some real-world problem which someone has observed? Yes, linked below. > Please describe that problem for us in lavish detail. This change helps for three reasons: 1. Insufficient amount of reserved memory due to arguments provided by user. User may request s

Re: [PATCH v1] mm: initialize pages on demand during boot

2018-01-12 Thread Andrew Morton
On Fri, 12 Jan 2018 13:34:05 -0500 Pavel Tatashin wrote: > Deferred page initialization allows the boot cpu to initialize a small > subset of the system's pages early in boot, with other cpus doing the rest > later on. > > It is, however, problematic to know how many pages the kernel needs duri