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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-07-31 11:03:04 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-09-26 15:45:02 +0200 |
| commit | d35339a42dd1f53b0bb86cf75418a9b7cf5f0f30 (patch) | |
| tree | 7f6447709e0bdb601687c40c42e09c3ca6deff8c /arch/s390/kernel/early.c | |
| parent | e4b8b3f33fcaa0ed6e6b5482a606091d8cd20beb (diff) | |
| download | op-kernel-dev-d35339a42dd1f53b0bb86cf75418a9b7cf5f0f30.zip op-kernel-dev-d35339a42dd1f53b0bb86cf75418a9b7cf5f0f30.tar.gz | |
s390: add support for transactional memory
Allow user-space processes to use transactional execution (TX).
If the TX facility is available user space programs can use
transactions for fine-grained serialization based on the data
objects that are referenced during a transaction. This is
useful for lockless data structures and speculative compiler
optimizations.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/early.c')
| -rw-r--r-- | arch/s390/kernel/early.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index e484079..1345ba4 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -370,6 +370,8 @@ static __init void detect_machine_facilities(void) S390_lowcore.machine_flags |= MACHINE_FLAG_MVCOS; if (test_facility(40)) S390_lowcore.machine_flags |= MACHINE_FLAG_SPP; + if (test_facility(50) && test_facility(73)) + S390_lowcore.machine_flags |= MACHINE_FLAG_TE; #endif } @@ -439,7 +441,6 @@ static void __init setup_boot_command_line(void) append_to_cmdline(append_ipl_scpdata); } - /* * Save ipl parameters, clear bss memory, initialize storage keys * and create a kernel NSS at startup if the SAVESYS= parm is defined |
