* Empty_zero_page is a special page that is used for zero-initialized data
* and COW.
*/
-struct page *empty_zero_page;
+unsigned long empty_zero_page[PAGE_SIZE / sizeof(unsigned long)] __page_aligned_bss;
EXPORT_SYMBOL(empty_zero_page);
pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
*/
void __init paging_init(void)
{
- void *zero_page;
-
map_mem();
fixup_executable();
- /* allocate the zero page. */
- zero_page = early_pgtable_alloc();
-
bootmem_init();
- empty_zero_page = virt_to_page(zero_page);
-
/*
* TTBR0 is only used for the identity mapping at this stage. Make it
* point to zero page to avoid speculatively fetching new entries.