From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:58086) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cw7X3-0001G6-7b for qemu-devel@nongnu.org; Thu, 06 Apr 2017 09:33:02 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cw7X0-0003Ex-2h for qemu-devel@nongnu.org; Thu, 06 Apr 2017 09:33:01 -0400 Received: from 8.mo2.mail-out.ovh.net ([188.165.52.147]:60623) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1cw7Wz-0003Ci-Rv for qemu-devel@nongnu.org; Thu, 06 Apr 2017 09:32:57 -0400 Received: from player731.ha.ovh.net (b9.ovh.net [213.186.33.59]) by mo2.mail-out.ovh.net (Postfix) with ESMTP id 605747BF37 for ; Thu, 6 Apr 2017 15:32:56 +0200 (CEST) References: <20170406102249.20383-1-nikunj@linux.vnet.ibm.com> <6029cef4-0a41-cde0-b3c9-6b6ad9bde572@kaod.org> From: =?UTF-8?Q?C=c3=a9dric_Le_Goater?= Message-ID: <718b56ea-2930-c85e-2c7f-b8b4287925a1@kaod.org> Date: Thu, 6 Apr 2017 15:32:48 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [Qemu-ppc] [PATCH RFC v1 0/3] Enable MTTCG on PPC64 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: G 3 Cc: Nikunj A Dadhania , qemu-ppc@nongnu.org, david@gibson.dropbear.id.au, rth@twiddle.net, alex.bennee@linaro.org, qemu-devel@nongnu.org, bharata@linux.vnet.ibm.com On 04/06/2017 03:28 PM, G 3 wrote: >=20 > On Apr 6, 2017, at 9:26 AM, C=E9dric Le Goater wrote: >=20 >> 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 cond= itional >>> >>> Patches are based on ppc-for-2.10 >>> >>> Tested using following: >>> ./ppc64-softmmu/qemu-system-ppc64 -cpu POWER8 -vga none -nographic -m= achine pseries,usb=3Doff -m 2G -smp 8,cores=3D8,threads=3D1 -accel tcg,t= hread=3Dmulti 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. >=20 > What was your guest operating system? The guest is an Ubuntu 16.04.2 and the host is an Ubuntu 17.04. C.=20