Re: [Qemu-devel] QEMU emulation per CPU

[Naresh Bhat]

Hi,

Can you please explain me why  qemu user mode doesn't get along nicely
with POSIX threads. ??

Thanks and regards
-Naresh Bhat

On Tue, Aug 28, 2012 at 1:51 PM, Mulyadi Santosa
<address@hidden> wrote:
> Hi..
>
> On Tue, Aug 28, 2012 at 3:04 PM, Naresh Bhat <address@hidden> wrote:
>> Hi All,
>>
>> I have the following questions related to QEMU
>>
>> a.      Does the userland emulation mode of QEMU support running
>> multiple processes on separate processors? (i.e. if we were running
>> ARM7 emulation on a x86 machine with 8 CPU cores, can we launch one
>> ARM7 binary per CPU?).
>
> yes, qemu user mode is running just like plain normal process. Maybe
> you just need to add cpu affinity here to lock them to certain
> processor...
>
>> b.      Same question as (a), but for threads. That is, for a single
>> ARM7 multi-threaded process,  can we run different threads on
>> different underlying CPUs?
>
> IIRC, qemu user mode doesn't get along nicely with POSIX threads....
>
> --
> regards,
>
> Mulyadi Santosa
> Freelance Linux trainer and consultant
>
> blog: the-hydra.blogspot.com
> training: mulyaditraining.blogspot.com



-- 
"For things to change, we must change"
-Naresh Bhat