[POWERPC] Add 1TB workaround for PA6T

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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>

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Olof Johansson 2007-10-16 00:58:59 +10:00 • committed by Paul Mackerras

parent 8129535b6b

commit f66bce5e6a

4 changed files with 11 additions and 2 deletions

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include/asm-powerpc/cputable.h

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