diff options
Diffstat (limited to 'arch/s390/kernel/smp.c')
| -rw-r--r-- | arch/s390/kernel/smp.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index e01408429ad6..dc602a61233f 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -273,26 +273,24 @@ static void pcpu_delegate(struct pcpu *pcpu, void (*func)(void *), void *data, unsigned long stack) { struct _lowcore *lc = lowcore_ptr[pcpu - pcpu_devices]; - struct { - unsigned long stack; - void *func; - void *data; - unsigned long source; - } restart = { stack, func, data, stap() }; + unsigned long source_cpu = stap(); __load_psw_mask(psw_kernel_bits); - if (pcpu->address == restart.source) + if (pcpu->address == source_cpu) func(data); /* should not return */ /* Stop target cpu (if func returns this stops the current cpu). */ pcpu_sigp_retry(pcpu, SIGP_STOP, 0); /* Restart func on the target cpu and stop the current cpu. */ - memcpy_absolute(&lc->restart_stack, &restart, sizeof(restart)); + mem_assign_absolute(lc->restart_stack, stack); + mem_assign_absolute(lc->restart_fn, (unsigned long) func); + mem_assign_absolute(lc->restart_data, (unsigned long) data); + mem_assign_absolute(lc->restart_source, source_cpu); asm volatile( "0: sigp 0,%0,%2 # sigp restart to target cpu\n" " brc 2,0b # busy, try again\n" "1: sigp 0,%1,%3 # sigp stop to current cpu\n" " brc 2,1b # busy, try again\n" - : : "d" (pcpu->address), "d" (restart.source), + : : "d" (pcpu->address), "d" (source_cpu), "K" (SIGP_RESTART), "K" (SIGP_STOP) : "0", "1", "cc"); for (;;) ; |