The previous code added wrong TLBs and causes machine check errors if
a driver accessed passed the end of the linear mapping instead of
a clean page fault.
Signed-off-by: NRalph E. Bellofatto <ralphbel@us.ibm.com>
Signed-off-by: NBenjamin Krill <ben@codiert.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>