x86: fix broken flush_tlb_others_ipi()

This commit broke flush_tlb_others_ipi() causing boot hangs on a
16 logical cpu system:

>	commit 4595f9620cda8a1e973588e743cf5f8436dd20c6
>	Author: Rusty Russell <rusty@rustcorp.com.au>
>	Date:   Sat Jan 10 21:58:09 2009 -0800
>
>	    x86: change flush_tlb_others to take a const struct cpumask

This change resulted in sending the invalidate tlb vector to the
sender itself causing the hang. flush_tlb_others_ipi() should exclude
the sender itself from the destination list.

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/tlb_64.c b/arch/x86/kernel/tlb_64.c
index 7a3f9891302d68786b10959b22e0b0a3aae1114a..54ee2ecb5e267cd3fe83a966d44977bc23ab8775 100644 (file)
--- a/arch/x86/kernel/tlb_64.c
+++ b/arch/x86/kernel/tlb_64.c
@@ -188,7 +188,7 @@ static void flush_tlb_others_ipi(const struct cpumask *cpumask,
         * We have to send the IPI only to
         * CPUs affected.
         */
-       send_IPI_mask(cpumask, INVALIDATE_TLB_VECTOR_START + sender);
+       send_IPI_mask(f->flush_cpumask, INVALIDATE_TLB_VECTOR_START + sender);
 
        while (!cpumask_empty(to_cpumask(f->flush_cpumask)))
                cpu_relax();