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Date: Tue, 16 Dec 2014 10:36:48 +0100
From: Frederic Konrad <fred.konrad@greensocs.com>
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Subject: Re: [Qemu-devel] [RFC PATCH] target-arm: protect cpu_exclusive_*.
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To: Paolo Bonzini <pbonzini@redhat.com>, qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, mark.burton@greensocs.com, vilanova@ac.upc.edu

On 16/12/2014 10:31, Paolo Bonzini wrote:
>
> On 16/12/2014 10:13, fred.konrad@greensocs.com wrote:
>> From: KONRAD Frederic <fred.konrad@greensocs.com>
>>
>> This adds a lock to avoid multiple exclusive access at the same time in case of
>> TCG multithread.
>>
>> Signed-off-by: KONRAD Frederic <fred.konrad@greensocs.com>
>> ---
>>   target-arm/cpu.c       | 15 +++++++++++++++
>>   target-arm/cpu.h       |  3 +++
>>   target-arm/helper.h    |  3 +++
>>   target-arm/op_helper.c | 10 ++++++++++
>>   target-arm/translate.c |  6 ++++++
>>   5 files changed, 37 insertions(+)
[..]
>>       g_hash_table_destroy(cpu->cp_regs);
>> +    qemu_mutex_destroy(&cpu_exclusive_lock);
> No need for this, and for -smp 2 it will cause the same lock to be
> destroyed twice.
>
> Paolo
Hi Paolo,

Good point for SMP!
The mutex doesn't need to be destroyed?

Thanks,
Fred