Andi Kleen wrote:
>> Hm, I was more wondering about simple compiler reordering. Does the
>> relative order of setting and reading cpu_tlbstate.state, active_mm and
>> the mm->cpu_vm_mask matter?
>>
>
> Hmm, perhaps a barrier between state and active_mm might be a good idea.
> Setting active_mm after state might be problematic.
> cpu_vm_mask should be already a memory barrier.
>
Should leave_mm update active_mm and set the state to TLBSTATE_OK? Just
reloading cr3 seems a bit blunt.
J
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