Re: TLB and PTE coherency during munmap

On Mon, Jun 03, 2013 at 11:01:39AM +0100, Catalin Marinas wrote:

On ARM there is a lot of ongoing work on single zImage for multiple
SoCs and this implies SMP kernels. There is an SMP_ON_UP feature which
does run-time code patching to optimise the UP case in a few places.

Regarding tlb_fast_mode(), the ARM-specific implementation is always 0
on ARMv7 even if UP because of speculative TLB loads (the MMU could
pretty much act as a separate processor).

Oh right.. I should really refresh the mmu_gather unification patches so
all archs are using the generic code.

/me ups on todo list.

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