diff options
Diffstat (limited to 'arch/powerpc/include')
| -rw-r--r-- | arch/powerpc/include/asm/lppaca.h | 18 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/spinlock.h | 2 |
2 files changed, 15 insertions, 5 deletions
diff --git a/arch/powerpc/include/asm/lppaca.h b/arch/powerpc/include/asm/lppaca.h index 9b12f88d4adb..bc8def08d5d8 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 5b23f910ee57..7c345b6518db 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 */ |