diff options
| author | Michael Holzheu <holzheu@linux.vnet.ibm.com> | 2011-05-10 17:13:41 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2011-05-10 17:13:43 +0200 |
| commit | 83ace2701b81be549cca7af33c5b0499cb2602d6 (patch) | |
| tree | 17c74e48a1d67b7691fbdd4955835f16db76ae88 /arch/s390/mm | |
| parent | [S390] disassembler: handle b280/spp instruction (diff) | |
| download | linux-83ace2701b81be549cca7af33c5b0499cb2602d6.tar.xz linux-83ace2701b81be549cca7af33c5b0499cb2602d6.zip | |
[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.c | 2 |
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); |