diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2007-05-08 16:27:28 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2007-05-09 16:35:00 +1000 |
| commit | 16c2d476232523260c495eafbf9cdc1be984b7df (patch) | |
| tree | fb6614b9752b51864e121317478088978823792c /arch/powerpc/mm/tlb_64.c | |
| parent | d0f13e3c20b6fb73ccb467bdca97fa7cf5a574cd (diff) | |
[POWERPC] Add ability to 4K kernel to hash in 64K pages
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>
Diffstat (limited to 'arch/powerpc/mm/tlb_64.c')
| -rw-r--r-- | arch/powerpc/mm/tlb_64.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/powerpc/mm/tlb_64.c b/arch/powerpc/mm/tlb_64.c index fd8d08c325e..2bfc4d7e1aa 100644 --- a/arch/powerpc/mm/tlb_64.c +++ b/arch/powerpc/mm/tlb_64.c @@ -143,16 +143,22 @@ void hpte_need_flush(struct mm_struct *mm, unsigned long addr, */ addr &= PAGE_MASK; - /* Get page size (maybe move back to caller) */ + /* Get page size (maybe move back to caller). + * + * NOTE: when using special 64K mappings in 4K environment like + * for SPEs, we obtain the page size from the slice, which thus + * must still exist (and thus the VMA not reused) at the time + * of this call + */ if (huge) { #ifdef CONFIG_HUGETLB_PAGE psize = mmu_huge_psize; #else BUG(); - psize = pte_pagesize_index(pte); /* shutup gcc */ + psize = pte_pagesize_index(mm, addr, pte); /* shutup gcc */ #endif } else - psize = pte_pagesize_index(pte); + psize = pte_pagesize_index(mm, addr, pte); /* Build full vaddr */ if (!is_kernel_addr(addr)) { |