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powerpc: Free a PTE bit on ppc64 with 64K pages

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This frees a PTE bit when using 64K pages on ppc64.  This is done
by getting rid of the separate _PAGE_HASHPTE bit.  Instead, we just test
if any of the 16 sub-page bits is set.  For non-combo pages (ie. real
64K pages), we set SUB0 and the location encoding in that field.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt 2008-06-11 15:37:10 +10:00 • committed by Paul Mackerras
commit 41743a4e34
5 changed files with 31 additions and 13 deletions
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