arm64: mm: place empty_zero_page in bss

[deliverable/linux.git] / arch / arm64 / mm / mmu.c

diff --git a/arch/arm64/mm/mmu.c b/arch/arm64/mm/mmu.c
index b25d5cbe4db18974bfadd63febae09a6f3b8f5e4..cdbf055a325d44902f48b97cf183eb60aa5470c4 100644 (file)
--- a/arch/arm64/mm/mmu.c
+++ b/arch/arm64/mm/mmu.c
@@ -49,7 +49,7 @@ u64 idmap_t0sz = TCR_T0SZ(VA_BITS);
  * 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,
@@ -459,18 +459,11 @@ void fixup_init(void)
  */
 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.