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author | David S. Miller <davem@davemloft.net> | 2012-11-10 18:32:51 -0500 |
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committer | David S. Miller <davem@davemloft.net> | 2012-11-10 18:32:51 -0500 |
commit | d4185bbf62a5d8d777ee445db1581beb17882a07 (patch) | |
tree | 024b0badbd7c970b1983be6d8c345cc4a290cb31 /arch/arm/kernel/smp.c | |
parent | c075b13098b399dc565b4d53f42047a8d40ed3ba (diff) | |
parent | a375413311b39005ef281bfd71ae8f4e3df22e97 (diff) | |
download | linux-next-d4185bbf62a5d8d777ee445db1581beb17882a07.tar.gz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Conflicts:
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
Minor conflict between the BCM_CNIC define removal in net-next
and a bug fix added to net. Based upon a conflict resolution
patch posted by Stephen Rothwell.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/arm/kernel/smp.c')
-rw-r--r-- | arch/arm/kernel/smp.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/arch/arm/kernel/smp.c b/arch/arm/kernel/smp.c index 8e20754dd31d..fbc8b2623d82 100644 --- a/arch/arm/kernel/smp.c +++ b/arch/arm/kernel/smp.c @@ -294,18 +294,24 @@ static void percpu_timer_setup(void); asmlinkage void __cpuinit secondary_start_kernel(void) { struct mm_struct *mm = &init_mm; - unsigned int cpu = smp_processor_id(); + unsigned int cpu; + + /* + * The identity mapping is uncached (strongly ordered), so + * switch away from it before attempting any exclusive accesses. + */ + cpu_switch_mm(mm->pgd, mm); + enter_lazy_tlb(mm, current); + local_flush_tlb_all(); /* * All kernel threads share the same mm context; grab a * reference and switch to it. */ + cpu = smp_processor_id(); atomic_inc(&mm->mm_count); current->active_mm = mm; cpumask_set_cpu(cpu, mm_cpumask(mm)); - cpu_switch_mm(mm->pgd, mm); - enter_lazy_tlb(mm, current); - local_flush_tlb_all(); printk("CPU%u: Booted secondary processor\n", cpu); |