Commit 3e03a2fc authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

[S390] kernel page table allocation. 



Don't waste DMA capable pages for identity mapping page tables.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent b18a60e7

arch/s390/mm/init.c

+3 −3
Original line number Diff line number Diff line
@@ -129,7 +129,7 @@ void __init paging_init(void) 
                /*

                 * pg_table is physical at this point

                 */

		pg_table = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);

		pg_table = (pte_t *) alloc_bootmem_pages(PAGE_SIZE);



                pg_dir->pgd0 =  (_PAGE_TABLE | __pa(pg_table));

                pg_dir->pgd1 =  (_PAGE_TABLE | (__pa(pg_table)+1024));
@@ -219,7 +219,7 @@ void __init paging_init(void) 
                        continue;

                }          

        

	        pm_dir = (pmd_t *) alloc_bootmem_low_pages(PAGE_SIZE*4);

		pm_dir = (pmd_t *) alloc_bootmem_pages(PAGE_SIZE * 4);

                pgd_populate(&init_mm, pg_dir, pm_dir);



                for (j = 0 ; j < PTRS_PER_PMD ; j++,pm_dir++) {
@@ -228,7 +228,7 @@ void __init paging_init(void) 
                                continue; 

                        }          

                        

                        pt_dir = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);

			pt_dir = (pte_t *) alloc_bootmem_pages(PAGE_SIZE);

                        pmd_populate_kernel(&init_mm, pm_dir, pt_dir);

	

                        for (k = 0 ; k < PTRS_PER_PTE ; k++,pt_dir++) {