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Commit aac0aadf authored by David S. Miller's avatar David S. Miller Committed by David S. Miller
Browse files

[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   hw context can be out of date, so reload it unconditionally.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: default avatarDavid S. Miller <davem@davemloft.net>
parent 6889331a

arch/sparc64/kernel/smp.c

+10 −6
Original line number Diff line number Diff line
@@ -909,16 +909,20 @@ void smp_receive_signal_client(int irq, struct pt_regs *regs) 
	 */

	mm = current->active_mm;

	if (likely(mm)) {

		if (unlikely(!CTX_VALID(mm->context))) {

		unsigned long flags;



		spin_lock_irqsave(&mm->context.lock, flags);



		if (unlikely(!CTX_VALID(mm->context)))

			get_new_mmu_context(mm);



		load_secondary_context(mm);

		__flush_tlb_mm(CTX_HWBITS(mm->context),

			       SECONDARY_CONTEXT);



		spin_unlock_irqrestore(&mm->context.lock, flags);

	}

}

}



void smp_new_mmu_context_version(void)

{