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| 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/kernel/diag.c | |
| parent | 91d378088b104f8e31baba8c518f32a7a219d58c (diff) | |
| download | linux-83ace2701b81be549cca7af33c5b0499cb2602d6.tar.bz2 | |
[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/kernel/diag.c')
| -rw-r--r-- | arch/s390/kernel/diag.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c index c032d11da8a1..8237fc07ac79 100644 --- a/arch/s390/kernel/diag.c +++ b/arch/s390/kernel/diag.c @@ -9,27 +9,6 @@ #include <asm/diag.h> /* - * Diagnose 10: Release pages - */ -void diag10(unsigned long addr) -{ - if (addr >= 0x7ff00000) - return; - asm volatile( -#ifdef CONFIG_64BIT - " sam31\n" - " diag %0,%0,0x10\n" - "0: sam64\n" -#else - " diag %0,%0,0x10\n" - "0:\n" -#endif - EX_TABLE(0b, 0b) - : : "a" (addr)); -} -EXPORT_SYMBOL(diag10); - -/* * Diagnose 14: Input spool file manipulation */ int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) |