Re: [patch 0/2] x86: NMI-safe trap handlers

[Mathieu Desnoyers]

* Andi Kleen (andi@xxxxxxxxxxxxxx) wrote:
> > x86_32 cannot use vmalloc_sync_all() to sychronize the TLBs from every
> > processes because the vmalloc area is mapped in a different address space for
> 
> That doesn't make sense. vmalloc_all_sync() should work on 32bit too.
> It just needs to walk all processes and fix up every page table.

Yeah, I've been taken aback when Tejun told me that a few moments ago. I
initially thought that vmalloc_sync_all() synchronized all page mappings of all
processes on x86_32. But apparently that does not seem to be the case. I'm
adding him in CC.

Thanks,

Mathieu

-- 
Mathieu Desnoyers
Operating System Efficiency R&D Consultant
EfficiOS Inc.
http://www.efficios.com
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