/* * Hide the first two arguments to __cpu_suspend - these are an implementation * detail which platform code shouldn't have to know about. */ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) { struct mm_struct *mm = current->active_mm; int ret; if (!idmap_pgd) return -EINVAL; /* * Provide a temporary page table with an identity mapping for * the MMU-enable code, required for resuming. On successful * resume (indicated by a zero return code), we need to switch * back to the correct page tables. */ ret = __cpu_suspend(arg, fn); if (ret == 0) { cpu_switch_mm(mm->pgd, mm); #if defined(CONFIG_BCM_KF_ARM_BCM963XX) local_flush_bp_all(); #endif local_flush_tlb_all(); } return ret; }
/* * Hide the first two arguments to __cpu_suspend - these are an implementation * detail which platform code shouldn't have to know about. */ int cpu_suspend(unsigned long arg, int (*fn)(unsigned long)) { struct mm_struct *mm = current->active_mm; u32 __mpidr = cpu_logical_map(smp_processor_id()); int ret; if (!idmap_pgd) return -EINVAL; /* * Provide a temporary page table with an identity mapping for * the MMU-enable code, required for resuming. On successful * resume (indicated by a zero return code), we need to switch * back to the correct page tables. */ ret = __cpu_suspend(arg, fn, __mpidr); if (ret == 0) { cpu_switch_mm(mm->pgd, mm); local_flush_bp_all(); local_flush_tlb_all(); } else { local_flush_tlb_all_non_is(); } return ret; }
void flush_bp_all(void) { if (tlb_ops_need_broadcast()) on_each_cpu(ipi_flush_bp_all, NULL, 1); else local_flush_bp_all(); }
/* * In order to soft-boot, we need to switch to a 1:1 mapping for the * cpu_reset functions. This will then ensure that we have predictable * results when turning off the mmu. */ void setup_mm_for_reboot(void) { /* Clean and invalidate L1. */ flush_cache_all(); /* Switch to the identity mapping. */ cpu_switch_mm(idmap_pgd, &init_mm); local_flush_bp_all(); /* Flush the TLB. */ local_flush_tlb_all(); }
/* * In order to soft-boot, we need to switch to a 1:1 mapping for the * cpu_reset functions. This will then ensure that we have predictable * results when turning off the mmu. */ void setup_mm_for_reboot(void) { /* Switch to the identity mapping. */ cpu_switch_mm(idmap_pgd, &init_mm); local_flush_bp_all(); #ifdef CONFIG_CPU_HAS_ASID /* * We don't have a clean ASID for the identity mapping, which * may clash with virtual addresses of the previous page tables * and therefore potentially in the TLB. */ local_flush_tlb_all(); #endif }
static inline void ipi_flush_bp_all(void *ignored) { local_flush_bp_all(); }