powerpc/mm/radix: Don't do page walk cache flush when doing full mm flush
For fullmm tlb flush, we do a flush with RIC_FLUSH_ALL which will invalidate all related caches (radix__tlb_flush()). Hence the pwc flush is not needed. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Acked-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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