diff options
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/Makefile | 12 | ||||
| -rw-r--r-- | arch/s390/mm/pageattr.c | 37 |
2 files changed, 42 insertions, 7 deletions
diff --git a/arch/s390/mm/Makefile b/arch/s390/mm/Makefile index 1bea6d1f55ab..640bea12303c 100644 --- a/arch/s390/mm/Makefile +++ b/arch/s390/mm/Makefile @@ -2,9 +2,9 @@ # Makefile for the linux s390-specific parts of the memory manager. # -obj-y := init.o fault.o extmem.o mmap.o vmem.o pgtable.o maccess.o \ - page-states.o gup.o extable.o -obj-$(CONFIG_CMM) += cmm.o -obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o -obj-$(CONFIG_DEBUG_SET_MODULE_RONX) += pageattr.o -obj-$(CONFIG_S390_PTDUMP) += dump_pagetables.o +obj-y := init.o fault.o extmem.o mmap.o vmem.o pgtable.o maccess.o +obj-y += page-states.o gup.o extable.o pageattr.o + +obj-$(CONFIG_CMM) += cmm.o +obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o +obj-$(CONFIG_S390_PTDUMP) += dump_pagetables.o diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c index c7ec7c2e46b0..73c3da393e88 100644 --- a/arch/s390/mm/pageattr.c +++ b/arch/s390/mm/pageattr.c @@ -2,11 +2,46 @@ * Copyright IBM Corp. 2011 * Author(s): Jan Glauber <jang@linux.vnet.ibm.com> */ +#include <linux/hugetlb.h> #include <linux/module.h> #include <linux/mm.h> -#include <linux/hugetlb.h> #include <asm/cacheflush.h> #include <asm/pgtable.h> +#include <asm/page.h> + +void storage_key_init_range(unsigned long start, unsigned long end) +{ + unsigned long boundary, function, size; + + while (start < end) { + if (MACHINE_HAS_EDAT2) { + /* set storage keys for a 2GB frame */ + function = 0x22000 | PAGE_DEFAULT_KEY; + size = 1UL << 31; + boundary = (start + size) & ~(size - 1); + if (boundary <= end) { + do { + start = pfmf(function, start); + } while (start < boundary); + continue; + } + } + if (MACHINE_HAS_EDAT1) { + /* set storage keys for a 1MB frame */ + function = 0x21000 | PAGE_DEFAULT_KEY; + size = 1UL << 20; + boundary = (start + size) & ~(size - 1); + if (boundary <= end) { + do { + start = pfmf(function, start); + } while (start < boundary); + continue; + } + } + page_set_storage_key(start, PAGE_DEFAULT_KEY, 0); + start += PAGE_SIZE; + } +} static pte_t *walk_page_table(unsigned long addr) { |