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| author | David S. Miller <davem@davemloft.net> | 2006-03-22 08:49:59 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-22 09:15:14 (GMT) |
| commit | dcc1e8dd88d4bc55e32a26dad7633d20ffe606d2 (patch) | |
| tree | a47592213d94f918867d3dd81bb91dac3e727dea /arch/sparc64/mm/init.c | |
| parent | 14778d9072e53d2171f66ffd9657daff41acfaed (diff) | |
| download | linux-dcc1e8dd88d4bc55e32a26dad7633d20ffe606d2.tar.xz | |
[SPARC64]: Add a secondary TSB for hugepage mappings.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/mm/init.c')
| -rw-r--r-- | arch/sparc64/mm/init.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c index c2b5561..16d2317 100644 --- a/arch/sparc64/mm/init.c +++ b/arch/sparc64/mm/init.c @@ -283,6 +283,7 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t p struct mm_struct *mm; struct tsb *tsb; unsigned long tag, flags; + unsigned long tsb_index, tsb_hash_shift; if (tlb_type != hypervisor) { unsigned long pfn = pte_pfn(pte); @@ -312,10 +313,26 @@ void update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t p mm = vma->vm_mm; + tsb_index = MM_TSB_BASE; + tsb_hash_shift = PAGE_SHIFT; + spin_lock_irqsave(&mm->context.lock, flags); - tsb = &mm->context.tsb[(address >> PAGE_SHIFT) & - (mm->context.tsb_nentries - 1UL)]; +#ifdef CONFIG_HUGETLB_PAGE + if (mm->context.tsb_block[MM_TSB_HUGE].tsb != NULL) { + if ((tlb_type == hypervisor && + (pte_val(pte) & _PAGE_SZALL_4V) == _PAGE_SZHUGE_4V) || + (tlb_type != hypervisor && + (pte_val(pte) & _PAGE_SZALL_4U) == _PAGE_SZHUGE_4U)) { + tsb_index = MM_TSB_HUGE; + tsb_hash_shift = HPAGE_SHIFT; + } + } +#endif + + tsb = mm->context.tsb_block[tsb_index].tsb; + tsb += ((address >> tsb_hash_shift) & + (mm->context.tsb_block[tsb_index].tsb_nentries - 1UL)); tag = (address >> 22UL); tsb_insert(tsb, tag, pte_val(pte)); |