diff options
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 15:16:50 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 15:16:43 +0100 |
| commit | b50511e41aa51a89b4176784a670582424bc7db6 (patch) | |
| tree | 0ad1553c7f2431878310e590187ee59ccb4d8cab /arch/s390/kernel/smp.c | |
| parent | b6ef5bb3d93efb95ba855a628740375c2280a59e (diff) | |
[S390] cleanup psw related bits and pieces
Split out addressing mode bits from PSW_BASE_BITS, rename PSW_BASE_BITS
to PSW_MASK_BASE, get rid of psw_user32_bits, remove unused function
enabled_wait(), introduce PSW_MASK_USER, and drop PSW_MASK_MERGE macros.
Change psw_kernel_bits / psw_user_bits to contain only the bits that
are always set in the respective mode.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/smp.c')
| -rw-r--r-- | arch/s390/kernel/smp.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index e3f51dfa5ca..6c8a977af59 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -108,7 +108,7 @@ void smp_restart_with_online_cpu(void) for_each_online_cpu(cpu) { if (stap() == __cpu_logical_map[cpu]) { /* We are online: Enable DAT again and return */ - __load_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK); + __load_psw_mask(psw_kernel_bits | PSW_MASK_DAT); return; } } @@ -130,14 +130,16 @@ void smp_switch_to_ipl_cpu(void (*func)(void *), void *data) if (smp_processor_id() == 0) func(data); - __load_psw_mask(PSW_BASE_BITS | PSW_DEFAULT_KEY); + __load_psw_mask(PSW_DEFAULT_KEY | PSW_MASK_BASE | + PSW_MASK_EA | PSW_MASK_BA); /* Disable lowcore protection */ __ctl_clear_bit(0, 28); current_lc = lowcore_ptr[smp_processor_id()]; lc = lowcore_ptr[0]; if (!lc) lc = current_lc; - lc->restart_psw.mask = PSW_BASE_BITS | PSW_DEFAULT_KEY; + lc->restart_psw.mask = + PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA | PSW_MASK_BA; lc->restart_psw.addr = PSW_ADDR_AMODE | (unsigned long) smp_restart_cpu; if (!cpu_online(0)) smp_switch_to_cpu(func, data, 0, stap(), __cpu_logical_map[0]); @@ -159,7 +161,7 @@ void smp_send_stop(void) int cpu, rc; /* Disable all interrupts/machine checks */ - __load_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK); + __load_psw_mask(psw_kernel_bits | PSW_MASK_DAT); trace_hardirqs_off(); /* stop all processors */ @@ -501,7 +503,8 @@ int __cpuinit start_secondary(void *cpuvoid) set_cpu_online(smp_processor_id(), true); ipi_call_unlock(); __ctl_clear_bit(0, 28); /* Disable lowcore protection */ - S390_lowcore.restart_psw.mask = PSW_BASE_BITS | PSW_DEFAULT_KEY; + S390_lowcore.restart_psw.mask = + PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA | PSW_MASK_BA; S390_lowcore.restart_psw.addr = PSW_ADDR_AMODE | (unsigned long) psw_restart_int_handler; __ctl_set_bit(0, 28); /* Enable lowcore protection */ @@ -549,7 +552,8 @@ static int __cpuinit smp_alloc_lowcore(int cpu) memset((char *)lowcore + 512, 0, sizeof(*lowcore) - 512); lowcore->async_stack = async_stack + ASYNC_SIZE; lowcore->panic_stack = panic_stack + PAGE_SIZE; - lowcore->restart_psw.mask = PSW_BASE_BITS | PSW_DEFAULT_KEY; + lowcore->restart_psw.mask = + PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_MASK_EA | PSW_MASK_BA; lowcore->restart_psw.addr = PSW_ADDR_AMODE | (unsigned long) restart_int_handler; if (user_mode != HOME_SPACE_MODE) |