Linus Torvalds writes: (Summary) You just
want to populate *one* page, in order to build up the page directory
structure, not allocate all the final points.
structure, not allocate all the final points.
And we only free the actual page tables when there is nothing around, so it should be at least a 2MB-aligned region etc.
so it should be at least a 2MB-aligned region etc.
So you should do a *big* allocation, and then touch a single page in the middle, and then minmap it - that should give you maximal page table activity.
structure, not allocate all the final points.
And we only free the actual page tables when there is nothing around, so it should be at least a 2MB-aligned region etc.
so it should be at least a 2MB-aligned region etc.
So you should do a *big* allocation, and then touch a single page in the middle, and then minmap it - that should give you maximal page table activity.