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

From: G 3
Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH RFC v1 0/3] Enable MTTCG on PPC64
Date: Thu, 6 Apr 2017 09:28:17 -0400

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?

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