核心游记之 内存管理paging_init

start_kernel ()

         --> setup_arch ()

                   --> paging_init ()

                            --> bootmem_init ()

                            --> alloc_bootmem_low_pages ()

 

 

/*
* Initialise the bootmem allocator for all nodes.  This is called
* early during the architecture specific initialisation.
*/

bootmem_init ()

 

 

/*
* paging_init() sets up the page tables, initialises the zone memory
* maps, and sets up the zero page, bad page and bad page tables.
*/

paging_init ()