Re: [Qemu-devel] [patch v5 7/8] memory: introduce tls context to record nested dma

[liu ping fan]

On Mon, Oct 29, 2012 at 4:51 PM, Paolo Bonzini <address@hidden> wrote:
> Il 29/10/2012 00:48, Liu Ping Fan ha scritto:
>> Signed-off-by: Liu Ping Fan <address@hidden>
>> ---
>>  cpus.c        |    3 ++
>>  exec.c        |   58 
>> +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>>  qemu-thread.h |    8 +++++++
>>  vl.c          |    1 +
>>  4 files changed, 70 insertions(+), 0 deletions(-)
>>
>> diff --git a/cpus.c b/cpus.c
>> index 191cbf5..e67d80f 100644
>> --- a/cpus.c
>> +++ b/cpus.c
>> @@ -733,6 +733,7 @@ static void *qemu_kvm_cpu_thread_fn(void *arg)
>>
>>      qemu_mutex_lock(&qemu_global_mutex);
>>      qemu_thread_get_self(cpu->thread);
>> +    qemu_thread_init_context();
>>      env->thread_id = qemu_get_thread_id();
>>      cpu_single_env = env;
>>
>> @@ -774,6 +775,7 @@ static void *qemu_dummy_cpu_thread_fn(void *arg)
>>
>>      qemu_mutex_lock_iothread();
>>      qemu_thread_get_self(cpu->thread);
>> +    qemu_thread_init_context();
>>      env->thread_id = qemu_get_thread_id();
>>
>>      sigemptyset(&waitset);
>> @@ -813,6 +815,7 @@ static void *qemu_tcg_cpu_thread_fn(void *arg)
>>
>>      qemu_tcg_init_cpu_signals();
>>      qemu_thread_get_self(cpu->thread);
>> +    qemu_thread_init_context();
>>
>>      /* signal CPU creation */
>>      qemu_mutex_lock(&qemu_global_mutex);
>> diff --git a/exec.c b/exec.c
>> index 46da08c..ea672c6 100644
>> --- a/exec.c
>> +++ b/exec.c
>> @@ -3449,6 +3449,49 @@ static bool 
>> address_space_section_lookup_ref(AddressSpace *as,
>>      return safe_ref;
>>  }
>>
>> +typedef struct ThreadContext {
>> +  DispatchType dispatch_type;
>> +  unsigned int mmio_req_pending;
>> +} ThreadContext;
>> +
>> +static __thread ThreadContext *thread_context;
>> +
>> +void qemu_thread_init_context(void)
>> +{
>> +    thread_context = g_new(ThreadContext, 1);
>> +    thread_context->dispatch_type = DISPATCH_INIT;
>> +    thread_context->mmio_req_pending = 0;
>> +}
>
> No need for this:
>
> static __thread ThreadContext thread_context = {
>     .dispatch_type = DISPATCH_INIT,
>     .mmio_req_pending = 0
> };
>
applied, thanks.

> Paolo
>
>