[SPARC64]: Add a secondary TSB for hugepage mappings.
Signed-off-by: David S. Miller <davem@davemloft.net>
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 @@
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 @@
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));