[SPARC64]: Fix bugs in SMP TLB context version expiration handling.
1) We must flush the TLB, duh.
2) Even if the sw context was seen to be valid, the local cpu's
hw context can be out of date, so reload it unconditionally.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 5ff2483..eb7c0f8 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -909,14 +909,18 @@
*/
mm = current->active_mm;
if (likely(mm)) {
- if (unlikely(!CTX_VALID(mm->context))) {
- unsigned long flags;
+ unsigned long flags;
- spin_lock_irqsave(&mm->context.lock, flags);
+ spin_lock_irqsave(&mm->context.lock, flags);
+
+ if (unlikely(!CTX_VALID(mm->context)))
get_new_mmu_context(mm);
- load_secondary_context(mm);
- spin_unlock_irqrestore(&mm->context.lock, flags);
- }
+
+ load_secondary_context(mm);
+ __flush_tlb_mm(CTX_HWBITS(mm->context),
+ SECONDARY_CONTEXT);
+
+ spin_unlock_irqrestore(&mm->context.lock, flags);
}
}