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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/include/asm/lowcore.h | |
| parent | e4b8b3f33fcaa0ed6e6b5482a606091d8cd20beb (diff) | |
| download | linux-d35339a42dd1f53b0bb86cf75418a9b7cf5f0f30.tar.gz linux-d35339a42dd1f53b0bb86cf75418a9b7cf5f0f30.tar.bz2 linux-d35339a42dd1f53b0bb86cf75418a9b7cf5f0f30.zip | |
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/include/asm/lowcore.h')
| -rw-r--r-- | arch/s390/include/asm/lowcore.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index aab5555bbbda..bbf8141408cd 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -329,9 +329,13 @@ struct _lowcore { __u8 pad_0x1338[0x1340-0x1338]; /* 0x1338 */ __u32 access_regs_save_area[16]; /* 0x1340 */ __u64 cregs_save_area[16]; /* 0x1380 */ + __u8 pad_0x1400[0x1800-0x1400]; /* 0x1400 */ + + /* Transaction abort diagnostic block */ + __u8 pgm_tdb[256]; /* 0x1800 */ /* align to the top of the prefix area */ - __u8 pad_0x1400[0x2000-0x1400]; /* 0x1400 */ + __u8 pad_0x1900[0x2000-0x1900]; /* 0x1900 */ } __packed; #endif /* CONFIG_32BIT */ |