tree 7e788739a51947f1caff47f9b5226cad739e3805
parent 8129535b6bcf40be62af2ae6b9234494f39725dd
author Olof Johansson <olof@lixom.net> 1192460339 +1000
committer Paul Mackerras <paulus@samba.org> 1192624209 +1000

[POWERPC] Add 1TB workaround for PA6T

PA6T has a bug where the slbie instruction does not honor the large
segment bit.  As a result, we have to always use slbia when switching
context.

We don't have to worry about changing the slbie's during fault processing,
since they should never be replacing one VSID with another using the
same ESID.  I.e. there's no risk for inserting duplicate entries due to a
failed slbie of the old entry.  So as long as we clear it out on context
switch we should be fine.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>