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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2011-07-24 10:48:20 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-07-24 10:48:21 +0200
commite5992f2e6c3829cd43dbc4438ee13dcd6506f7f3 (patch)
treeb2d5d9fbfc610bd788532eafcd4b56e9ef7dbdd3 /arch/s390/mm/hugetlbpage.c
parent144d634a21caff1d54cb4bb0d073774e88130045 (diff)
downloadlinux-linaro-stable-e5992f2e6c3829cd43dbc4438ee13dcd6506f7f3.tar.gz
[S390] kvm guest address space mapping
Add code that allows KVM to control the virtual memory layout that is seen by a guest. The guest address space uses a second page table that shares the last level pte-tables with the process page table. If a page is unmapped from the process page table it is automatically unmapped from the guest page table as well. The guest address space mapping starts out empty, KVM can map any individual 1MB segments from the process virtual memory to any 1MB aligned location in the guest virtual memory. If a target segment in the process virtual memory does not exist or is unmapped while a guest mapping exists the desired target address is stored as an invalid segment table entry in the guest page table. The population of the guest page table is fault driven. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/mm/hugetlbpage.c')
-rw-r--r--arch/s390/mm/hugetlbpage.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index a4d856db9154..597bb2d27c3c 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -35,7 +35,7 @@ int arch_prepare_hugepage(struct page *page)
if (MACHINE_HAS_HPAGE)
return 0;
- ptep = (pte_t *) pte_alloc_one(&init_mm, address);
+ ptep = (pte_t *) pte_alloc_one(&init_mm, addr);
if (!ptep)
return -ENOMEM;