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powerpc: Add memory management headers for new 64-bit BookE

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This adds the PTE and pgtable format definitions, along with changes
to the kernel memory map and other definitions related to implementing
support for 64-bit Book3E. This also shields some asm-offset bits that
are currently only relevant on 32-bit

We also move the definition of the "linux" page size constants to
the common mmu.h file and add a few sizes that are relevant to
embedded processors.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Benjamin Herrenschmidt
2009-07-28 11:59:34 +10:00
parent 0257c99cdf
commit 57e2a99f74
10 changed files with 205 additions and 40 deletions
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8
arch/powerpc/mm/hugetlbpage.c
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@ -57,8 +57,10 @@ unsigned int mmu_huge_psizes[MMU_PAGE_COUNT] = { }; /* initialize all to 0 */
#define HUGEPTE_CACHE_NAME(psize) (huge_pgtable_cache_name[psize])
static const char *huge_pgtable_cache_name[MMU_PAGE_COUNT] = {
"unused_4K", "hugepte_cache_64K", "unused_64K_AP",
"hugepte_cache_1M", "hugepte_cache_16M", "hugepte_cache_16G"
[MMU_PAGE_64K] = "hugepte_cache_64K",
[MMU_PAGE_1M] = "hugepte_cache_1M",
[MMU_PAGE_16M] = "hugepte_cache_16M",
[MMU_PAGE_16G] = "hugepte_cache_16G",
};
/* Flag to mark huge PD pointers. This means pmd_bad() and pud_bad()
@ -700,6 +702,8 @@ static void __init set_huge_psize(int psize)
if (mmu_huge_psizes[psize] ||
mmu_psize_defs[psize].shift == PAGE_SHIFT)
return;
if (WARN_ON(HUGEPTE_CACHE_NAME(psize) == NULL))
return;
hugetlb_add_hstate(mmu_psize_defs[psize].shift - PAGE_SHIFT);
switch (mmu_psize_defs[psize].shift) {