diff options
Diffstat (limited to 'arch/arm/include/asm')
| -rw-r--r-- | arch/arm/include/asm/arch_gicv3.h | 34 | ||||
| -rw-r--r-- | arch/arm/include/asm/futex.h | 26 | ||||
| -rw-r--r-- | arch/arm/include/asm/kvm_host.h | 6 | ||||
| -rw-r--r-- | arch/arm/include/asm/spinlock.h | 16 | ||||
| -rw-r--r-- | arch/arm/include/asm/thread_info.h | 15 | ||||
| -rw-r--r-- | arch/arm/include/asm/tlb.h | 11 | ||||
| -rw-r--r-- | arch/arm/include/asm/traps.h | 7 | ||||
| -rw-r--r-- | arch/arm/include/asm/uaccess.h | 2 |
8 files changed, 58 insertions, 59 deletions
diff --git a/arch/arm/include/asm/arch_gicv3.h b/arch/arm/include/asm/arch_gicv3.h index 27475904e096..eee269321923 100644 --- a/arch/arm/include/asm/arch_gicv3.h +++ b/arch/arm/include/asm/arch_gicv3.h @@ -276,6 +276,12 @@ static inline u64 __gic_readq_nonatomic(const volatile void __iomem *addr) #define gicr_write_pendbaser(v, c) __gic_writeq_nonatomic(v, c) /* + * GICR_xLPIR - only the lower bits are significant + */ +#define gic_read_lpir(c) readl_relaxed(c) +#define gic_write_lpir(v, c) writel_relaxed(lower_32_bits(v), c) + +/* * GITS_TYPER is an ID register and doesn't need atomicity. */ #define gits_read_typer(c) __gic_readq_nonatomic(c) @@ -291,5 +297,33 @@ static inline u64 __gic_readq_nonatomic(const volatile void __iomem *addr) */ #define gits_write_cwriter(v, c) __gic_writeq_nonatomic(v, c) +/* + * GITS_VPROPBASER - hi and lo bits may be accessed independently. + */ +#define gits_write_vpropbaser(v, c) __gic_writeq_nonatomic(v, c) + +/* + * GITS_VPENDBASER - the Valid bit must be cleared before changing + * anything else. + */ +static inline void gits_write_vpendbaser(u64 val, void * __iomem addr) +{ + u32 tmp; + + tmp = readl_relaxed(addr + 4); + if (tmp & (GICR_VPENDBASER_Valid >> 32)) { + tmp &= ~(GICR_VPENDBASER_Valid >> 32); + writel_relaxed(tmp, addr + 4); + } + + /* + * Use the fact that __gic_writeq_nonatomic writes the second + * half of the 64bit quantity after the first. + */ + __gic_writeq_nonatomic(val, addr); +} + +#define gits_read_vpendbaser(c) __gic_readq_nonatomic(c) + #endif /* !__ASSEMBLY__ */ #endif /* !__ASM_ARCH_GICV3_H */ diff --git a/arch/arm/include/asm/futex.h b/arch/arm/include/asm/futex.h index 6795368ad023..cc414382dab4 100644 --- a/arch/arm/include/asm/futex.h +++ b/arch/arm/include/asm/futex.h @@ -128,20 +128,10 @@ futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, #endif /* !SMP */ static inline int -futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr) +arch_futex_atomic_op_inuser(int op, int oparg, int *oval, u32 __user *uaddr) { - int op = (encoded_op >> 28) & 7; - int cmp = (encoded_op >> 24) & 15; - int oparg = (encoded_op << 8) >> 20; - int cmparg = (encoded_op << 20) >> 20; int oldval = 0, ret, tmp; - if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) - oparg = 1 << oparg; - - if (!access_ok(VERIFY_WRITE, uaddr, sizeof(u32))) - return -EFAULT; - #ifndef CONFIG_SMP preempt_disable(); #endif @@ -172,17 +162,9 @@ futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr) preempt_enable(); #endif - if (!ret) { - switch (cmp) { - case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break; - case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break; - case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break; - case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break; - case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break; - case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break; - default: ret = -ENOSYS; - } - } + if (!ret) + *oval = oldval; + return ret; } diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h index 127e2dd2e21c..4a879f6ff13b 100644 --- a/arch/arm/include/asm/kvm_host.h +++ b/arch/arm/include/asm/kvm_host.h @@ -225,12 +225,6 @@ int kvm_arm_copy_reg_indices(struct kvm_vcpu *vcpu, u64 __user *indices); int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end); int kvm_test_age_hva(struct kvm *kvm, unsigned long hva); -/* We do not have shadow page tables, hence the empty hooks */ -static inline void kvm_arch_mmu_notifier_invalidate_page(struct kvm *kvm, - unsigned long address) -{ -} - struct kvm_vcpu *kvm_arm_get_running_vcpu(void); struct kvm_vcpu __percpu **kvm_get_running_vcpus(void); void kvm_arm_halt_guest(struct kvm *kvm); diff --git a/arch/arm/include/asm/spinlock.h b/arch/arm/include/asm/spinlock.h index 4bec45442072..c030143c18c6 100644 --- a/arch/arm/include/asm/spinlock.h +++ b/arch/arm/include/asm/spinlock.h @@ -52,22 +52,6 @@ static inline void dsb_sev(void) * memory. */ -static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) -{ - u16 owner = READ_ONCE(lock->tickets.owner); - - for (;;) { - arch_spinlock_t tmp = READ_ONCE(*lock); - - if (tmp.tickets.owner == tmp.tickets.next || - tmp.tickets.owner != owner) - break; - - wfe(); - } - smp_acquire__after_ctrl_dep(); -} - #define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) static inline void arch_spin_lock(arch_spinlock_t *lock) diff --git a/arch/arm/include/asm/thread_info.h b/arch/arm/include/asm/thread_info.h index 776757d1604a..1d468b527b7b 100644 --- a/arch/arm/include/asm/thread_info.h +++ b/arch/arm/include/asm/thread_info.h @@ -139,10 +139,11 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, #define TIF_NEED_RESCHED 1 /* rescheduling necessary */ #define TIF_NOTIFY_RESUME 2 /* callback before returning to user */ #define TIF_UPROBE 3 /* breakpointed or singlestepping */ -#define TIF_SYSCALL_TRACE 4 /* syscall trace active */ -#define TIF_SYSCALL_AUDIT 5 /* syscall auditing active */ -#define TIF_SYSCALL_TRACEPOINT 6 /* syscall tracepoint instrumentation */ -#define TIF_SECCOMP 7 /* seccomp syscall filtering active */ +#define TIF_FSCHECK 4 /* Check FS is USER_DS on return */ +#define TIF_SYSCALL_TRACE 5 /* syscall trace active */ +#define TIF_SYSCALL_AUDIT 6 /* syscall auditing active */ +#define TIF_SYSCALL_TRACEPOINT 7 /* syscall tracepoint instrumentation */ +#define TIF_SECCOMP 8 /* seccomp syscall filtering active */ #define TIF_NOHZ 12 /* in adaptive nohz mode */ #define TIF_USING_IWMMXT 17 @@ -153,6 +154,7 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) #define _TIF_UPROBE (1 << TIF_UPROBE) +#define _TIF_FSCHECK (1 << TIF_FSCHECK) #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) #define _TIF_SYSCALL_TRACEPOINT (1 << TIF_SYSCALL_TRACEPOINT) @@ -166,8 +168,9 @@ extern int vfp_restore_user_hwstate(struct user_vfp __user *, /* * Change these and you break ASM code in entry-common.S */ -#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ - _TIF_NOTIFY_RESUME | _TIF_UPROBE) +#define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ + _TIF_NOTIFY_RESUME | _TIF_UPROBE | \ + _TIF_FSCHECK) #endif /* __KERNEL__ */ #endif /* __ASM_ARM_THREAD_INFO_H */ diff --git a/arch/arm/include/asm/tlb.h b/arch/arm/include/asm/tlb.h index 3f2eb76243e3..d5562f9ce600 100644 --- a/arch/arm/include/asm/tlb.h +++ b/arch/arm/include/asm/tlb.h @@ -148,7 +148,8 @@ static inline void tlb_flush_mmu(struct mmu_gather *tlb) } static inline void -tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long start, unsigned long end) +arch_tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, + unsigned long start, unsigned long end) { tlb->mm = mm; tlb->fullmm = !(start | (end+1)); @@ -166,8 +167,14 @@ tlb_gather_mmu(struct mmu_gather *tlb, struct mm_struct *mm, unsigned long start } static inline void -tlb_finish_mmu(struct mmu_gather *tlb, unsigned long start, unsigned long end) +arch_tlb_finish_mmu(struct mmu_gather *tlb, + unsigned long start, unsigned long end, bool force) { + if (force) { + tlb->range_start = start; + tlb->range_end = end; + } + tlb_flush_mmu(tlb); /* keep the page table cache within bounds */ diff --git a/arch/arm/include/asm/traps.h b/arch/arm/include/asm/traps.h index f555bb3664dc..683d9230984a 100644 --- a/arch/arm/include/asm/traps.h +++ b/arch/arm/include/asm/traps.h @@ -18,7 +18,6 @@ struct undef_hook { void register_undef_hook(struct undef_hook *hook); void unregister_undef_hook(struct undef_hook *hook); -#ifdef CONFIG_FUNCTION_GRAPH_TRACER static inline int __in_irqentry_text(unsigned long ptr) { extern char __irqentry_text_start[]; @@ -27,12 +26,6 @@ static inline int __in_irqentry_text(unsigned long ptr) return ptr >= (unsigned long)&__irqentry_text_start && ptr < (unsigned long)&__irqentry_text_end; } -#else -static inline int __in_irqentry_text(unsigned long ptr) -{ - return 0; -} -#endif static inline int in_exception_text(unsigned long ptr) { diff --git a/arch/arm/include/asm/uaccess.h b/arch/arm/include/asm/uaccess.h index 0bf2347495f1..87936dd5d151 100644 --- a/arch/arm/include/asm/uaccess.h +++ b/arch/arm/include/asm/uaccess.h @@ -70,6 +70,8 @@ static inline void set_fs(mm_segment_t fs) { current_thread_info()->addr_limit = fs; modify_domain(DOMAIN_KERNEL, fs ? DOMAIN_CLIENT : DOMAIN_MANAGER); + /* On user-mode return, check fs is correct */ + set_thread_flag(TIF_FSCHECK); } #define segment_eq(a, b) ((a) == (b)) |