diff options
Diffstat (limited to 'arch/s390/mm/pgtable.c')
| -rw-r--r-- | arch/s390/mm/pgtable.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index be99357d238c..b2c1542f2ba2 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -322,11 +322,12 @@ static int gmap_alloc_table(struct gmap *gmap, unsigned long *table, static unsigned long __gmap_segment_gaddr(unsigned long *entry) { struct page *page; - unsigned long offset; + unsigned long offset, mask; offset = (unsigned long) entry / sizeof(unsigned long); offset = (offset & (PTRS_PER_PMD - 1)) * PMD_SIZE; - page = pmd_to_page((pmd_t *) entry); + mask = ~(PTRS_PER_PMD * sizeof(pmd_t) - 1); + page = virt_to_page((void *)((unsigned long) entry & mask)); return page->index + offset; } @@ -526,7 +527,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr) table += (gaddr >> 53) & 0x7ff; if ((*table & _REGION_ENTRY_INVALID) && gmap_alloc_table(gmap, table, _REGION2_ENTRY_EMPTY, - gaddr & 0xffe0000000000000)) + gaddr & 0xffe0000000000000UL)) return -ENOMEM; table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN); } @@ -534,7 +535,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr) table += (gaddr >> 42) & 0x7ff; if ((*table & _REGION_ENTRY_INVALID) && gmap_alloc_table(gmap, table, _REGION3_ENTRY_EMPTY, - gaddr & 0xfffffc0000000000)) + gaddr & 0xfffffc0000000000UL)) return -ENOMEM; table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN); } @@ -542,7 +543,7 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr) table += (gaddr >> 31) & 0x7ff; if ((*table & _REGION_ENTRY_INVALID) && gmap_alloc_table(gmap, table, _SEGMENT_ENTRY_EMPTY, - gaddr & 0xffffffff80000000)) + gaddr & 0xffffffff80000000UL)) return -ENOMEM; table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN); } |