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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2015-08-13 12:27:16 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-08-19 10:03:34 +0200 |
| commit | a69db2f6ad69157cace810971f19cb5aec9956b1 (patch) | |
| tree | 40cf4f10fe4279285404905350f0616d9f9a326b | |
| parent | c0e5ddab6e985c83714b31a88098e76c39ff084a (diff) | |
| download | linux-a69db2f6ad69157cace810971f19cb5aec9956b1.tar.bz2 | |
s390/facilities: remove transactional-execution bits
Remove the two facility bits
50 - constrained transactional-execution facility
74 - transactional-execution facility
from the required facilities if the kernel is built with -march=zEC12.
E.g. z/VM 6.3 doesn't virtualize the TX facility yet. Therefore a kernel
built with -march=zEC12 and ipl'ed on a zEC12 machine as a z/VM 6.3 guest
will emit a message about the missing facilities and stop working.
The kernel however doesn't make use of the TX facility, therefore remove
the two TX related facility bits and fix this unpleasant behavior.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| -rw-r--r-- | arch/s390/kernel/head.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index 63c77fdb619e..1255c6c5353e 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -414,9 +414,9 @@ ENTRY(startup_kdump) # followed by the facility words. #if defined(CONFIG_MARCH_Z13) - .long 3, 0xc100eff2, 0xf46ce800, 0x00400000 + .long 2, 0xc100eff2, 0xf46cc800 #elif defined(CONFIG_MARCH_ZEC12) - .long 3, 0xc100eff2, 0xf46ce800, 0x00400000 + .long 2, 0xc100eff2, 0xf46cc800 #elif defined(CONFIG_MARCH_Z196) .long 2, 0xc100eff2, 0xf46c0000 #elif defined(CONFIG_MARCH_Z10) |