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Diffstat (limited to 'arch/s390/kernel/smp.c')
-rw-r--r--arch/s390/kernel/smp.c32
1 files changed, 7 insertions, 25 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 390d97daa2b3..27c763014114 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -47,7 +47,6 @@
#include <asm/vtimer.h>
#include <asm/lowcore.h>
#include <asm/sclp.h>
-#include <asm/vdso.h>
#include <asm/debug.h>
#include <asm/os_info.h>
#include <asm/sigp.h>
@@ -55,6 +54,7 @@
#include <asm/nmi.h>
#include <asm/stacktrace.h>
#include <asm/topology.h>
+#include <asm/vdso.h>
#include "entry.h"
enum {
@@ -217,14 +217,10 @@ static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)
lc->return_mcck_lpswe = gen_lpswe(__LC_RETURN_MCCK_PSW);
if (nmi_alloc_per_cpu(lc))
goto out_async;
- if (vdso_alloc_per_cpu(lc))
- goto out_mcesa;
lowcore_ptr[cpu] = lc;
pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, (u32)(unsigned long) lc);
return 0;
-out_mcesa:
- nmi_free_per_cpu(lc);
out_async:
stack_free(async_stack);
out:
@@ -245,7 +241,6 @@ static void pcpu_free_lowcore(struct pcpu *pcpu)
pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, 0);
lowcore_ptr[pcpu - pcpu_devices] = NULL;
- vdso_free_per_cpu(pcpu->lowcore);
nmi_free_per_cpu(pcpu->lowcore);
stack_free(async_stack);
if (pcpu == &pcpu_devices[0])
@@ -265,13 +260,13 @@ static void pcpu_prepare_secondary(struct pcpu *pcpu, int cpu)
lc->spinlock_index = 0;
lc->percpu_offset = __per_cpu_offset[cpu];
lc->kernel_asce = S390_lowcore.kernel_asce;
- lc->user_asce = S390_lowcore.kernel_asce;
+ lc->user_asce = s390_invalid_asce;
lc->machine_flags = S390_lowcore.machine_flags;
lc->user_timer = lc->system_timer =
lc->steal_timer = lc->avg_steal_timer = 0;
__ctl_store(lc->cregs_save_area, 0, 15);
lc->cregs_save_area[1] = lc->kernel_asce;
- lc->cregs_save_area[7] = lc->vdso_asce;
+ lc->cregs_save_area[7] = lc->user_asce;
save_access_regs((unsigned int *) lc->access_regs_save_area);
memcpy(lc->stfle_fac_list, S390_lowcore.stfle_fac_list,
sizeof(lc->stfle_fac_list));
@@ -859,13 +854,12 @@ static void smp_init_secondary(void)
S390_lowcore.last_update_clock = get_tod_clock();
restore_access_regs(S390_lowcore.access_regs_save_area);
- set_cpu_flag(CIF_ASCE_PRIMARY);
- set_cpu_flag(CIF_ASCE_SECONDARY);
cpu_init();
rcu_cpu_starting(cpu);
preempt_disable();
init_cpu_timer();
vtime_init();
+ vdso_getcpu_init();
pfault_init();
notify_cpu_starting(cpu);
if (topology_cpu_dedicated(cpu))
@@ -896,24 +890,12 @@ static void __no_sanitize_address smp_start_secondary(void *cpuvoid)
/* Upping and downing of CPUs */
int __cpu_up(unsigned int cpu, struct task_struct *tidle)
{
- struct pcpu *pcpu;
- int base, i, rc;
+ struct pcpu *pcpu = pcpu_devices + cpu;
+ int rc;
- pcpu = pcpu_devices + cpu;
if (pcpu->state != CPU_STATE_CONFIGURED)
return -EIO;
- base = smp_get_base_cpu(cpu);
- for (i = 0; i <= smp_cpu_mtid; i++) {
- if (base + i < nr_cpu_ids)
- if (cpu_online(base + i))
- break;
- }
- /*
- * If this is the first CPU of the core to get online
- * do an initial CPU reset.
- */
- if (i > smp_cpu_mtid &&
- pcpu_sigp_retry(pcpu_devices + base, SIGP_INITIAL_CPU_RESET, 0) !=
+ if (pcpu_sigp_retry(pcpu, SIGP_INITIAL_CPU_RESET, 0) !=
SIGP_CC_ORDER_CODE_ACCEPTED)
return -EIO;