diff options
Diffstat (limited to 'arch/arm64/include/asm/mmu_context.h')
| -rw-r--r-- | arch/arm64/include/asm/mmu_context.h | 21 |
1 files changed, 15 insertions, 6 deletions
diff --git a/arch/arm64/include/asm/mmu_context.h b/arch/arm64/include/asm/mmu_context.h index f68465dee02..a9eee33dfa6 100644 --- a/arch/arm64/include/asm/mmu_context.h +++ b/arch/arm64/include/asm/mmu_context.h @@ -35,6 +35,21 @@ extern unsigned int cpu_last_asid; void __init_new_context(struct task_struct *tsk, struct mm_struct *mm); void __new_context(struct mm_struct *mm); +#ifdef CONFIG_PID_IN_CONTEXTIDR +static inline void contextidr_thread_switch(struct task_struct *next) +{ + asm( + " msr contextidr_el1, %0\n" + " isb" + : + : "r" (task_pid_nr(next))); +} +#else +static inline void contextidr_thread_switch(struct task_struct *next) +{ +} +#endif + /* * Set TTBR0 to empty_zero_page. No translations will be possible via TTBR0. */ @@ -136,12 +151,6 @@ switch_mm(struct mm_struct *prev, struct mm_struct *next, { unsigned int cpu = smp_processor_id(); -#ifdef CONFIG_SMP - /* check for possible thread migration */ - if (!cpumask_empty(mm_cpumask(next)) && - !cpumask_test_cpu(cpu, mm_cpumask(next))) - __flush_icache_all(); -#endif if (!cpumask_test_and_set_cpu(cpu, mm_cpumask(next)) || prev != next) check_and_switch_context(next, tsk); } |