Now that we have everything in place, let's allow huge (1m) pmds for gmap linking, effectively allowing hugetlbfs backed guests. Transparent huge pages and 2g huge pages are *not* supported through this change. Signed-off-by: Janosch Frank <frankja@xxxxxxxxxxxxxxxxxx> Acked-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx> Reviewed-by: David Hildenbrand <david@xxxxxxxxxx> --- arch/s390/mm/gmap.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/arch/s390/mm/gmap.c b/arch/s390/mm/gmap.c index ae25f76..ff35643 100644 --- a/arch/s390/mm/gmap.c +++ b/arch/s390/mm/gmap.c @@ -2,8 +2,10 @@ /* * KVM guest address space mapping code * - * Copyright IBM Corp. 2007, 2016 + * Copyright IBM Corp. 2007, 2016, 2017 * Author(s): Martin Schwidefsky <schwidefsky@xxxxxxxxxx> + * David Hildenbrand <david@xxxxxxxxxx> + * Janosch Frank <frankja@xxxxxxxxxxxxxxxxxx> */ #include <linux/kernel.h> @@ -595,9 +597,6 @@ int __gmap_link(struct gmap *gmap, unsigned long gaddr, unsigned long vmaddr) return -EFAULT; pmd = pmd_offset(pud, vmaddr); VM_BUG_ON(pmd_none(*pmd)); - /* large pmds cannot yet be handled */ - if (pmd_large(*pmd)) - return -EFAULT; /* Link gmap segment table entry location to page table. */ rc = radix_tree_preload(GFP_KERNEL); if (rc) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-s390" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
