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-rw-r--r--arch/mips/mm/init.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 1a85ba92eb5c..be9acb2b959d 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -469,19 +469,20 @@ void __init_refok free_initmem(void)
469#ifndef CONFIG_MIPS_PGD_C0_CONTEXT 469#ifndef CONFIG_MIPS_PGD_C0_CONTEXT
470unsigned long pgd_current[NR_CPUS]; 470unsigned long pgd_current[NR_CPUS];
471#endif 471#endif
472/*
473 * On 64-bit we've got three-level pagetables with a slightly
474 * different layout ...
475 */
476#define __page_aligned(order) __attribute__((__aligned__(PAGE_SIZE<<order)))
477 472
478/* 473/*
479 * gcc 3.3 and older have trouble determining that PTRS_PER_PGD and PGD_ORDER 474 * gcc 3.3 and older have trouble determining that PTRS_PER_PGD and PGD_ORDER
480 * are constants. So we use the variants from asm-offset.h until that gcc 475 * are constants. So we use the variants from asm-offset.h until that gcc
481 * will officially be retired. 476 * will officially be retired.
477 *
478 * Align swapper_pg_dir in to 64K, allows its address to be loaded
479 * with a single LUI instruction in the TLB handlers. If we used
480 * __aligned(64K), its size would get rounded up to the alignment
481 * size, and waste space. So we place it in its own section and align
482 * it in the linker script.
482 */ 483 */
483pgd_t swapper_pg_dir[_PTRS_PER_PGD] __page_aligned(_PGD_ORDER); 484pgd_t swapper_pg_dir[_PTRS_PER_PGD] __section(.bss..swapper_pg_dir);
484#ifndef __PAGETABLE_PMD_FOLDED 485#ifndef __PAGETABLE_PMD_FOLDED
485pmd_t invalid_pmd_table[PTRS_PER_PMD] __page_aligned(PMD_ORDER); 486pmd_t invalid_pmd_table[PTRS_PER_PMD] __page_aligned_bss;
486#endif 487#endif
487pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned(PTE_ORDER); 488pte_t invalid_pte_table[PTRS_PER_PTE] __page_aligned_bss;