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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2005-11-06 19:06:55 -0500
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-06 19:56:47 -0500
commit3c726f8dee6f55e96475574e9f645327e461884c (patch)
treef67c381e8f57959aa4a94bda4c68e24253cd8171 /include/asm-powerpc/machdep.h
parentf912696ab330bf539231d1f8032320f2a08b850f (diff)
[PATCH] ppc64: support 64k pages
Adds a new CONFIG_PPC_64K_PAGES which, when enabled, changes the kernel base page size to 64K. The resulting kernel still boots on any hardware. On current machines with 4K pages support only, the kernel will maintain 16 "subpages" for each 64K page transparently. Note that while real 64K capable HW has been tested, the current patch will not enable it yet as such hardware is not released yet, and I'm still verifying with the firmware architects the proper to get the information from the newer hypervisors. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-powerpc/machdep.h')
-rw-r--r--include/asm-powerpc/machdep.h10
1 files changed, 6 insertions, 4 deletions
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index 629ca964b974..fa03864d06eb 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -47,20 +47,22 @@ struct machdep_calls {
47#ifdef CONFIG_PPC64 47#ifdef CONFIG_PPC64
48 void (*hpte_invalidate)(unsigned long slot, 48 void (*hpte_invalidate)(unsigned long slot,
49 unsigned long va, 49 unsigned long va,
50 int large, 50 int psize,
51 int local); 51 int local);
52 long (*hpte_updatepp)(unsigned long slot, 52 long (*hpte_updatepp)(unsigned long slot,
53 unsigned long newpp, 53 unsigned long newpp,
54 unsigned long va, 54 unsigned long va,
55 int large, 55 int pize,
56 int local); 56 int local);
57 void (*hpte_updateboltedpp)(unsigned long newpp, 57 void (*hpte_updateboltedpp)(unsigned long newpp,
58 unsigned long ea); 58 unsigned long ea,
59 int psize);
59 long (*hpte_insert)(unsigned long hpte_group, 60 long (*hpte_insert)(unsigned long hpte_group,
60 unsigned long va, 61 unsigned long va,
61 unsigned long prpn, 62 unsigned long prpn,
63 unsigned long rflags,
62 unsigned long vflags, 64 unsigned long vflags,
63 unsigned long rflags); 65 int psize);
64 long (*hpte_remove)(unsigned long hpte_group); 66 long (*hpte_remove)(unsigned long hpte_group);
65 void (*flush_hash_range)(unsigned long number, int local); 67 void (*flush_hash_range)(unsigned long number, int local);
66 68