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authorMichael Holzheu <holzheu@linux.vnet.ibm.com>2011-05-10 17:13:41 +0200
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2011-05-10 17:13:43 +0200
commit83ace2701b81be549cca7af33c5b0499cb2602d6 (patch)
tree17c74e48a1d67b7691fbdd4955835f16db76ae88 /arch/s390/mm
parent91d378088b104f8e31baba8c518f32a7a219d58c (diff)
downloadlinux-linaro-stable-83ace2701b81be549cca7af33c5b0499cb2602d6.tar.gz
[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>
Diffstat (limited to 'arch/s390/mm')
-rw-r--r--arch/s390/mm/cmm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index c66ffd8dbbb7..1f1dba9dcf58 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);