diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-01-27 10:12:40 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-01-27 10:12:49 +0100 |
| commit | 21ec7f6dbf10492ce9a21718040677d3e68bd57d (patch) | |
| tree | 5446637ed4982dc78be84f4bd386b02b8d0027c1 /Documentation/mutex-design.txt | |
| parent | 19b123ebacacdce5e75045bfe82122b01c821a5b (diff) | |
[S390] fix single stepped svcs with TRACE_IRQFLAGS=y
If irq flags tracing is enabled the TRACE_IRQS_ON macros expands to
a function call which clobbers registers %r0-%r5. The macro is used
in the code path for single stepped system calls. The argument
registers %r2-%r6 need to be restored from the stack before the system
call function is called.
Cc: stable@kernel.org
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'Documentation/mutex-design.txt')
0 files changed, 0 insertions, 0 deletions