Re: [Qemu-devel] What about SMP support in QEMU?

[Robin Randhawa]

Hi Naruil.

On 16 Sep 2009, at 14:21, Naruil wrote:

> Is SMP supported in qemu on the following target architectures?
>
> ARM    SPARC    MIPS
AFAIK, qemu ARM has SMP support. More specifically, qemu models an  
ARM11 MPCore on a realview baseboard system. It is capable of booting  
Linux SMP on this model.
FYI, (and this is based on cursory examination so could be wrong) -  
qemu's SMP support is not 'concurrent' - qemu switches between the  
emulation of individual MPCores and there is no mapping of core  
emulation to host cores (that would be a more realistic model of SMP  
concurrency) since that is fraught with locking overheads etc and is  
likely to make the qemu translation process very slow.
HTH,
Robin