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[POWERPC] Add ability to 4K kernel to hash in 64K pages

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This adds the ability for a kernel compiled with 4K page size
to have special slices containing 64K pages and hash the right type
of hash PTEs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2007-05-08 16:27:28 +10:00
committed by Paul Mackerras
parent d0f13e3c20
commit 16c2d47623
6 changed files with 57 additions and 18 deletions
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include/asm-powerpc/pgtable-4k.h
+5 -1
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@@ -80,7 +80,11 @@
#define pte_iterate_hashed_end() } while(0)
#define pte_pagesize_index(pte) MMU_PAGE_4K
#ifdef CONFIG_PPC_HAS_HASH_64K
#define pte_pagesize_index(mm, addr, pte) get_slice_psize(mm, addr)
#else
#define pte_pagesize_index(mm, addr, pte) MMU_PAGE_4K
#endif
/*
* 4-level page tables related bits