From 25097bf153391f7be4c591d47061b3dc4990dac2 Mon Sep 17 00:00:00 2001 From: Christian Ehrhardt Date: Tue, 14 Apr 2009 15:36:16 +0200 Subject: [S390] s390: move machine flags to lowcore Currently the storage of the machine flags is a globally exported unsigned long long variable. By moving the storage location into the lowcore struct we allow assembler code to check machine_flags directly even without needing a register. Addtionally the lowcore and therefore the machine flags too will be in cache most of the time. Signed-off-by: Christian Ehrhardt Signed-off-by: Martin Schwidefsky --- arch/s390/kernel/smp.c | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/s390/kernel/smp.c') diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 006ed5016eb..79663024071 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -571,6 +571,7 @@ int __cpuinit __cpu_up(unsigned int cpu) cpu_lowcore->current_task = (unsigned long) idle; cpu_lowcore->cpu_nr = cpu; cpu_lowcore->kernel_asce = S390_lowcore.kernel_asce; + cpu_lowcore->machine_flags = S390_lowcore.machine_flags; eieio(); while (signal_processor(cpu, sigp_restart) == sigp_busy) -- cgit v1.2.3