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authorDavid S. Miller <davem@davemloft.net>2006-02-27 17:56:51 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-20 01:14:08 -0800
commitaac0aadf09b98ba36eab0bb02a560ebcb82ac39f (patch)
tree0628f23fd3d7bd343966e038d6328f9bf0e8751d /arch
parent6889331a1260e42b0275f42c13d6342d6cc1a03d (diff)
downloadop-kernel-dev-aac0aadf09b98ba36eab0bb02a560ebcb82ac39f.zip
op-kernel-dev-aac0aadf09b98ba36eab0bb02a560ebcb82ac39f.tar.gz
[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1) We must flush the TLB, duh. 2) Even if the sw context was seen to be valid, the local cpu's hw context can be out of date, so reload it unconditionally.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>
Diffstat (limited to 'arch')
-rw-r--r--arch/sparc64/kernel/smp.c16
1 files changed, 10 insertions, 6 deletions
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 @@ 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;
+ 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);
}
}
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