diff options
| -rw-r--r-- | arch/powerpc/include/asm/lppaca.h | 18 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/spinlock.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/kernel/lparcfg.c | 5 | ||||
| -rw-r--r-- | arch/powerpc/kvm/book3s_hv.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/mm/numa.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/hotplug-cpu.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/processor_idle.c | 2 |
7 files changed, 23 insertions, 12 deletions
diff --git a/arch/powerpc/include/asm/lppaca.h b/arch/powerpc/include/asm/lppaca.h index 9b12f88d4ad..bc8def08d5d 100644 --- a/arch/powerpc/include/asm/lppaca.h +++ b/arch/powerpc/include/asm/lppaca.h @@ -50,10 +50,8 @@ struct lppaca { u32 desc; /* Eye catcher 0xD397D781 */ u16 size; /* Size of this struct */ - u16 reserved1; - u16 reserved2:14; - u8 shared_proc:1; /* Shared processor indicator */ - u8 secondary_thread:1; /* Secondary thread indicator */ + u8 reserved1[3]; + u8 __old_status; /* Old status, including shared proc */ u8 reserved3[14]; volatile u32 dyn_hw_node_id; /* Dynamic hardware node id */ volatile u32 dyn_hw_proc_id; /* Dynamic hardware proc id */ @@ -108,6 +106,18 @@ extern struct lppaca lppaca[]; #define lppaca_of(cpu) (*paca[cpu].lppaca_ptr) /* + * Old kernels used a reserved bit in the VPA to determine if it was running + * in shared processor mode. New kernels look for a non zero yield count + * but KVM still needs to set the bit to keep the old stuff happy. + */ +#define LPPACA_OLD_SHARED_PROC 2 + +static inline bool lppaca_shared_proc(struct lppaca *l) +{ + return l->yield_count != 0; +} + +/* * SLB shadow buffer structure as defined in the PAPR. The save_area * contains adjacent ESID and VSID pairs for each shadowed SLB. The * ESID is stored in the lower 64bits, then the VSID. diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h index 5b23f910ee5..7c345b6518d 100644 --- a/arch/powerpc/include/asm/spinlock.h +++ b/arch/powerpc/include/asm/spinlock.h @@ -96,7 +96,7 @@ static inline int arch_spin_trylock(arch_spinlock_t *lock) #if defined(CONFIG_PPC_SPLPAR) /* We only yield to the hypervisor if we are in shared processor mode */ -#define SHARED_PROCESSOR (local_paca->lppaca_ptr->shared_proc) +#define SHARED_PROCESSOR (lppaca_shared_proc(local_paca->lppaca_ptr)) extern void __spin_yield(arch_spinlock_t *lock); extern void __rw_yield(arch_rwlock_t *lock); #else /* SPLPAR */ diff --git a/arch/powerpc/kernel/lparcfg.c b/arch/powerpc/kernel/lparcfg.c index d92f3871e9c..e6024c2ed5c 100644 --- a/arch/powerpc/kernel/lparcfg.c +++ b/arch/powerpc/kernel/lparcfg.c @@ -165,7 +165,7 @@ static void parse_ppp_data(struct seq_file *m) ppp_data.active_system_procs); /* pool related entries are appropriate for shared configs */ - if (lppaca_of(0).shared_proc) { + if (lppaca_shared_proc(get_lppaca())) { unsigned long pool_idle_time, pool_procs; seq_printf(m, "pool=%d\n", ppp_data.pool_num); @@ -473,7 +473,8 @@ static int pseries_lparcfg_data(struct seq_file *m, void *v) seq_printf(m, "partition_potential_processors=%d\n", partition_potential_processors); - seq_printf(m, "shared_processor_mode=%d\n", lppaca_of(0).shared_proc); + seq_printf(m, "shared_processor_mode=%d\n", + lppaca_shared_proc(get_lppaca())); seq_printf(m, "slb_size=%d\n", mmu_slb_size); diff --git a/arch/powerpc/kvm/book3s_hv.c b/arch/powerpc/kvm/book3s_hv.c index 2efa9dde741..cf39bf4f3c7 100644 --- a/arch/powerpc/kvm/book3s_hv.c +++ b/arch/powerpc/kvm/book3s_hv.c @@ -217,7 +217,7 @@ struct kvm_vcpu *kvmppc_find_vcpu(struct kvm *kvm, int id) static void init_vpa(struct kvm_vcpu *vcpu, struct lppaca *vpa) { - vpa->shared_proc = 1; + vpa->__old_status |= LPPACA_OLD_SHARED_PROC; vpa->yield_count = 1; } diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index 5850798826c..501e32ca43b 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1609,7 +1609,7 @@ int start_topology_update(void) #endif } } else if (firmware_has_feature(FW_FEATURE_VPHN) && - get_lppaca()->shared_proc) { + lppaca_shared_proc(get_lppaca())) { if (!vphn_enabled) { prrn_enabled = 0; vphn_enabled = 1; diff --git a/arch/powerpc/platforms/pseries/hotplug-cpu.c b/arch/powerpc/platforms/pseries/hotplug-cpu.c index 217ca5c75b2..1e490cf63a0 100644 --- a/arch/powerpc/platforms/pseries/hotplug-cpu.c +++ b/arch/powerpc/platforms/pseries/hotplug-cpu.c @@ -123,7 +123,7 @@ static void pseries_mach_cpu_die(void) cede_latency_hint = 2; get_lppaca()->idle = 1; - if (!get_lppaca()->shared_proc) + if (!lppaca_shared_proc(get_lppaca())) get_lppaca()->donate_dedicated_cpu = 1; while (get_preferred_offline_state(cpu) == CPU_STATE_INACTIVE) { @@ -137,7 +137,7 @@ static void pseries_mach_cpu_die(void) local_irq_disable(); - if (!get_lppaca()->shared_proc) + if (!lppaca_shared_proc(get_lppaca())) get_lppaca()->donate_dedicated_cpu = 0; get_lppaca()->idle = 0; diff --git a/arch/powerpc/platforms/pseries/processor_idle.c b/arch/powerpc/platforms/pseries/processor_idle.c index 4644efa0694..92db881be27 100644 --- a/arch/powerpc/platforms/pseries/processor_idle.c +++ b/arch/powerpc/platforms/pseries/processor_idle.c @@ -308,7 +308,7 @@ static int pseries_idle_probe(void) return -EPERM; } - if (get_lppaca()->shared_proc) + if (lppaca_shared_proc(get_lppaca())) cpuidle_state_table = shared_states; else cpuidle_state_table = dedicated_states; |