From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 484EDC5B578 for ; Mon, 1 Jul 2019 05:49:43 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1A0F1208E4 for ; Mon, 1 Jul 2019 05:49:42 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=gibson.dropbear.id.au header.i=@gibson.dropbear.id.au header.b="T5JamDfC" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1A0F1208E4 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gibson.dropbear.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:47920 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hhpCA-0002PC-6f for qemu-devel@archiver.kernel.org; Mon, 01 Jul 2019 01:49:42 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37356) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hhpAg-0000e4-Ee for qemu-devel@nongnu.org; Mon, 01 Jul 2019 01:48:12 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hhpAe-0005q0-Vq for qemu-devel@nongnu.org; Mon, 01 Jul 2019 01:48:10 -0400 Received: from bilbo.ozlabs.org ([203.11.71.1]:33321 helo=ozlabs.org) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hhpAe-0005oA-Av; Mon, 01 Jul 2019 01:48:08 -0400 Received: by ozlabs.org (Postfix, from userid 1007) id 45cbxs0HmHz9s4Y; Mon, 1 Jul 2019 15:48:00 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gibson.dropbear.id.au; s=201602; t=1561960081; bh=vb2ASapvK2L2M4YhLizryolwqb73LHVMNEGTx7o4AYQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=T5JamDfCA/rjStavC19h0AMfKz9NW/Plz8Qj8rtMnBP0622Vju661OmhwCvpXUsUo kPYW79/iTI1FkxdchJsopRDvw3XgtoInadeJm7GiNk5YaUqrAmPvAWEJeUn41iqWCl s99AuygBFUBejX67q//Cp4tBuha3xqOAZLnfcH2Y= Date: Mon, 1 Jul 2019 15:04:26 +1000 From: David Gibson To: Philippe =?iso-8859-1?Q?Mathieu-Daud=E9?= Message-ID: <20190701050426.GI2138@umbus.fritz.box> References: <20190310082703.1245-1-david@gibson.dropbear.id.au> <20190310082703.1245-58-david@gibson.dropbear.id.au> <20190312150115.6zuaid43gr7hklt5@unused> <58de43c6-31d5-a0a3-b443-54a33f11d75a@kaod.org> <20190312191409.vxnpscrephtk6otv@dhcp-17-165.bos.redhat.com> <1746025955.7399905.1552419034356.JavaMail.zimbra@redhat.com> <154364d7-fe5b-4f40-b976-b85ff9060ee0@kaod.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="N8NGGaQn1mzfvaPg" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.12.0 (2019-05-25) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 203.11.71.1 Subject: Re: [Qemu-devel] [PULL 57/60] target/ppc: add HV support for POWER9 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lvivier@redhat.com, peter maydell , qemu-devel@nongnu.org, groug@kaod.org, qemu-ppc@nongnu.org, =?iso-8859-1?Q?C=E9dric?= Le Goater , Cleber Rosa Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --N8NGGaQn1mzfvaPg Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Jun 28, 2019 at 03:20:32PM +0200, Philippe Mathieu-Daud=E9 wrote: > Hi, >=20 > On 3/12/19 8:58 PM, C=E9dric Le Goater wrote: > > On 3/12/19 8:30 PM, Cleber Rosa wrote: > >>> From: "Cleber Rosa" > >>> Sent: Tuesday, March 12, 2019 3:14:09 PM > >>> Subject: Re: [Qemu-devel] [PULL 57/60] target/ppc: add HV support for= POWER9 > >>> > >>> On Tue, Mar 12, 2019 at 07:34:04PM +0100, C=E9dric Le Goater wrote: > >>>> On 3/12/19 4:01 PM, Cleber Rosa wrote: > >>>>> On Sun, Mar 10, 2019 at 07:27:00PM +1100, David Gibson wrote: > >>>>>> From: C=E9dric Le Goater > >>>>>> > >>>>>> We now have enough support to boot a PowerNV machine with a POWER9 > >>>>>> processor. Allow HV mode on POWER9. > >>>>>> > >>>>>> Signed-off-by: C=E9dric Le Goater > >>>>>> Message-Id: <20190307223548.20516-16-clg@kaod.org> > >>>>>> Signed-off-by: David Gibson > >>>>>> --- > >>>>>> target/ppc/translate_init.inc.c | 3 ++- > >>>>>> 1 file changed, 2 insertions(+), 1 deletion(-) > >>>>>> > >>>>>> diff --git a/target/ppc/translate_init.inc.c > >>>>>> b/target/ppc/translate_init.inc.c > >>>>>> index af70a3b78c..0bd555eb19 100644 > >>>>>> --- a/target/ppc/translate_init.inc.c > >>>>>> +++ b/target/ppc/translate_init.inc.c > >>>>>> @@ -8895,7 +8895,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void > >>>>>> *data) > >>>>>> PPC_CACHE | PPC_CACHE_ICBI | PPC_CACHE_DCB= Z | > >>>>>> PPC_MEM_SYNC | PPC_MEM_EIEIO | > >>>>>> PPC_MEM_TLBSYNC | > >>>>>> - PPC_64B | PPC_64BX | PPC_ALTIVEC | > >>>>>> + PPC_64B | PPC_64H | PPC_64BX | PPC_ALTIVEC= | > >>>>>> PPC_SEGMENT_64B | PPC_SLBI | > >>>>>> PPC_POPCNTB | PPC_POPCNTWD | > >>>>>> PPC_CILDST; > >>>>>> @@ -8907,6 +8907,7 @@ POWERPC_FAMILY(POWER9)(ObjectClass *oc, void > >>>>>> *data) > >>>>>> PPC2_ISA205 | PPC2_ISA207S | PPC2_FP_CVT_= S64 | > >>>>>> PPC2_TM | PPC2_ISA300 | PPC2_PRCNTL; > >>>>>> pcc->msr_mask =3D (1ull << MSR_SF) | > >>>>>> + (1ull << MSR_SHV) | > >>>>>> (1ull << MSR_TM) | > >>>>>> (1ull << MSR_VR) | > >>>>>> (1ull << MSR_VSX) | > >>>>>> > >>>>>> > >>>>> > >>>>> This change prevents a Fedora 29 kernel[1] from booting... is this > >>>>> intended or a known limitation of the Fedora 29 kernel? > >>>> > >>>> The default CPU is still power8_v2.0. This is curious. > >>>> > >>> > >>> Are you sure? I'm getting: > >>> > >>> $ git rev-parse HEAD > >>> cfc3fef6b4e493bf1a7ee16790ad584e20dfbbd1 > >>> $ ./ppc64-softmmu/qemu-system-ppc64 -qmp unix:/tmp/qmp-sock,server > >>> $ ./scripts/qmp/qom-get -s /tmp/qmp-sock /machine/unattached/device[= 0].type > >>> power9_v2.0-spapr-cpu-core > >=20 > > That's a pseries machine, not a powernv machine. pseries should use P9 > > processor by default but the patch above should not impact f29 on pseri= es.=20 > > If it does, then we have a bug.=20 > > =20 > >> Looks like the overall default is "power9_v2.0", and then on pseries-3= =2E1 and > >> lower, it's "power8_v2.0", as per 34a6b015a98. > >=20 > > I was looking at pnv_machine_class_init() which sets the default CPU : > >=20 > > mc->default_cpu_type =3D POWERPC_CPU_TYPE_NAME("power8_v2.0"); >=20 > I found this thread while trying auto-bisection for LP#1834613: > https://bugs.launchpad.net/bugs/1834613 >=20 > When trying the options suggested by Laurent here: > https://lists.gnu.org/archive/html/qemu-devel/2019-06/msg06209.html >=20 > this one hangs: >=20 > $ qemu-system-ppc64 \ > -kernel vmlinuz-vanilla \ > -nographic -append "console=3Dhvc0" \ > -M cap-cfpc=3Dbroken,cap-sbbc=3Dbroken,cap-ibs=3Dbroken >=20 > but this one works: >=20 > $ qemu-system-ppc64 \ > -kernel vmlinuz-vanilla \ > -nographic -append "console=3Dhvc0" \ > -M pseries-3.1 Sorry, I missed most of this thread while on holidays. What's the actual bug here? --=20 David Gibson | I'll have my music baroque, and my code david AT gibson.dropbear.id.au | minimalist, thank you. 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