diff options
| author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 10:56:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-22 10:56:57 -0800 |
| commit | d04ef3a795b3b7b376a02713ed5e211e9ae1f917 (patch) | |
| tree | 837da034751a2fc1be0fc5a105c218d41a498eb6 /arch/sparc64/mm/init.c | |
| parent | 36177ba655c238e33400cc2837a28720b62784bd (diff) | |
| parent | dcc1e8dd88d4bc55e32a26dad7633d20ffe606d2 (diff) | |
Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC64]: Add a secondary TSB for hugepage mappings.
[SPARC]: Respect vm_page_prot in io_remap_page_range().
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 2ae143ba50d..ded63ee9c4f 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)); |