On 2011-02-01 14:14, Marcelo Tosatti wrote:
> On Thu, Jan 27, 2011 at 02:10:00PM +0100, Jan Kiszka wrote:
>> Introduce qemu_cpu_kick_self to send SIG_IPI to the calling VCPU
>> context. First user will be kvm.
>>
>> Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
>> ---
>> cpus.c | 21 +++++++++++++++++++++
>> qemu-common.h | 1 +
>> 2 files changed, 22 insertions(+), 0 deletions(-)
>>
>> diff --git a/cpus.c b/cpus.c
>> index bba59e5..88bed4e 100644
>> --- a/cpus.c
>> +++ b/cpus.c
>> @@ -531,6 +531,17 @@ void qemu_cpu_kick(void *env)
>> return;
>> }
>>
>> +void qemu_cpu_kick_self(void)
>> +{
>> +#ifndef _WIN32
>> + assert(cpu_single_env);
>> +
>> + raise(SIG_IPI);
>> +#else
>> + abort();
>> +#endif
>> +}
>> +
>> void qemu_notify_event(void)
>> {
>> CPUState *env = cpu_single_env;
>> @@ -808,6 +819,16 @@ void qemu_cpu_kick(void *_env)
>> }
>> }
>>
>> +void qemu_cpu_kick_self(void)
>> +{
>> + assert(cpu_single_env);
>> +
>> + if (!cpu_single_env->thread_kicked) {
>> + qemu_thread_signal(cpu_single_env->thread, SIG_IPI);
>> + cpu_single_env->thread_kicked = true;
>> + }
>> +}
>> +
>
> There is no need to use cpu_single_env, can pass CPUState instead.
>
It's done intentionally this way: function shall not be used for a
remote env.
Jan
--
Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux
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