[PATCH v4 07/12] mm: enable lazy_mmu sections to nest

[Ritesh Harjani (IBM)]

Ritesh Harjani (IBM) <ritesh.list at gmail.com> writes:

> For e.g... 
>   
>     arch_enter_lazy_mmu_mode()
>         hpte_need_flush()
>             get_cpu_var()   // this takes care of preempt_disable() 
>             adds vpns to per-cpu batch[i]
>             put_cpu_var()   // 
>     arch_leave_lazy_mmu_mode()
>

Sorry, here is the more accurate call sequence for previous email.

caller()... 
     arch_enter_lazy_mmu_mode()
     ptep_xxx_()
        pte_update()
             hpte_need_flush()
                get_cpu_var()   // this takes care of preempt_disable() 
                adds vpns to per-cpu batch[i]
                put_cpu_var()   // 
     arch_leave_lazy_mmu_mode()

-ritesh