Re: [Qemu-devel] [Qemu-ppc] [PATCH RFC v1 0/3] Enable MTTCG on PPC64

[Cédric Le Goater]

On 04/06/2017 03:28 PM, G 3 wrote:
> 
> On Apr 6, 2017, at 9:26 AM, Cédric Le Goater wrote:
> 
>> Hello Nikunj,
>>
>> On 04/06/2017 12:22 PM, Nikunj A Dadhania wrote:
>>> The series enables Multi-Threaded TCG on PPC64
>>>
>>> Patch 01: Use atomic_cmpxchg in store conditional
>>>       02: Handle first write to page during atomic operation
>>>       03: Generate memory barriers for sync/isync and load/store conditional
>>>
>>> Patches are based on ppc-for-2.10
>>>
>>> Tested using following:
>>> ./ppc64-softmmu/qemu-system-ppc64 -cpu POWER8 -vga none -nographic -machine 
>>> pseries,usb=off -m 2G  -smp 8,cores=8,threads=1 -accel tcg,thread=multi  
>>> f23.img
>>
>> I tried it with a Ubuntu 16.04.2 guest using stress --cpu 8. It looked
>> good : the CPU usage of QEMU reached 760% on the host.
> 
> What was your guest operating system?

The guest is an Ubuntu 16.04.2 and the host is an Ubuntu 17.04.

C.