powerpc/mm: Use tlbiel only if we ever ran on the current cpu

[Michael Ellerman]

On Mon, 2016-24-10 at 03:20:43 UTC, "Aneesh Kumar K.V" wrote:
> Before this patch, we used tlbiel, if we ever ran only on this core.
> That was mostly derived from the nohash usage of the same. But the
> ISA 3.0 clarifies tlbiel such that
> 
> "All TLB entries that have all of the following properties are made
> invalid on the thread executing the tlbiel instruction"
> 
> Hence use tlbiel, if we only ever ran on just the current cpu.
> 
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.vnet.ibm.com>

Applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/bd77c4498616e27d5725b5959d880c

cheers