[S390] replace diag10() with diag10_range() function

Currently the diag10() function can only release one page. For exploiters
that have to call diag10 on a contiguous memory region this is suboptimal.
This patch replaces the diag10() function with diag10_range() that is
able to release multiple pages. In addition to that the new function now
allows to release memory with addresses higher than 2047 MiB. This was
due to a restriction of the diagnose implementation under z/VM prior to
release 5.2.

Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index c66ffd8dbbb..1f1dba9dcf5 100644
--- a/arch/s390/mm/cmm.c
+++ b/arch/s390/mm/cmm.c
@@ -91,7 +91,7 @@ static long cmm_alloc_pages(long nr, long *counter,
                         } else
                                 free_page((unsigned long) npa);
                 }
-                diag10(addr);
+                diag10_range(addr >> PAGE_SHIFT, 1);
                 pa->pages[pa->index++] = addr;
                 (*counter)++;
                 spin_unlock(&cmm_lock);