linux/arch/s390
Heiko Carstens 504e75d0ed [S390] futex: let futex_atomic_cmpxchg_pt survive early functional tests.
a0c1e9073e "futex: runtime enable pi and
robust functionality" introduces a test wether futex in atomic stuff
works or not.
It does that by writing to address 0 of the kernel address space. This
will crash on older machines where addressing mode switching is enabled
but where the mvcos instruction is not available. Page table walking is
done by hand and therefore the code tries to access current->mm which
is NULL.
Therefore add an extra check, so we survive the early test.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-03-20 17:33:46 +01:00
..
appldata [S390] appldata: remove unused binary sysctls. 2007-11-20 11:13:45 +01:00
boot [PATCH] use ${CROSS_COMPILE}installkernel in arch/*/boot/install.sh 2005-06-23 09:45:07 -07:00
crypto [S390] constify function pointer tables. 2008-01-26 14:11:32 +01:00
hypfs Kobject: convert arch/* from kobject_unregister() to kobject_put() 2008-01-24 20:40:39 -08:00
kernel [S390] incorrect reipl nss name. 2008-03-05 12:37:20 +01:00
lib [S390] futex: let futex_atomic_cmpxchg_pt survive early functional tests. 2008-03-20 17:33:46 +01:00
math-emu [S390] Calibrate delay and bogomips. 2007-02-05 21:18:31 +01:00
mm [S390] dynamic page tables. 2008-02-09 18:24:41 +01:00
oprofile Combine instrumentation menus in kernel/Kconfig.instrumentation 2007-10-19 11:53:54 -07:00
defconfig [S390] Update default configuration. 2008-03-05 12:37:16 +01:00
Kconfig [S390] Fix IPL from NSS. 2008-03-05 12:37:19 +01:00
Kconfig.debug [S390] DEBUG_PAGEALLOC support for s390. 2008-02-05 16:50:54 +01:00
Makefile kbuild: enable 'make AFLAGS=...' to add additional options to AS 2007-10-15 21:59:31 +02:00