On Mon, 9 Mar 2020 11:16:10 +0000
bauerchen(陈蒙蒙) <address@hidden> wrote:
> Thanks, in fact,do_touch_pages is called just when vm starts up, but using init flag and Gonce maybe more elegant !
> if needed,I can submit a new patch !
> thanks very much!
it's called from os_mem_prealloc() -> touch_all_pages() which is called
at least once per an instance of hotsmem backend. So if several backends
are used then it should be called several times.
The same applies when a hostmem backend is added during runtime (hotplug)