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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 21 Nov 2019 11:29:06 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xALBT56x46661778 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 21 Nov 2019 11:29:05 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1ECABA4060; Thu, 21 Nov 2019 11:29:05 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A6AF5A405B; Thu, 21 Nov 2019 11:29:04 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.70.129]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 21 Nov 2019 11:29:04 +0000 (GMT) Subject: Re: [PATCH 15/15] s390x: protvirt: Handle SIGP store status correctly To: David Hildenbrand , qemu-devel@nongnu.org References: <20191120114334.2287-1-frankja@linux.ibm.com> <20191120114334.2287-16-frankja@linux.ibm.com> <92f11251-6348-0767-b6cf-d6dbed6e6fca@redhat.com> From: Janosch Frank Autocrypt: addr=frankja@linux.ibm.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: <92f11251-6348-0767-b6cf-d6dbed6e6fca@redhat.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Db1jOXmY5b35wzvBbi16AKuqdRsS9ri4z" X-TM-AS-GCONF: 00 x-cbid: 19112111-0028-0000-0000-000003BD8AE1 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19112111-0029-0000-0000-00002480B2B4 Message-Id: <40b6b928-3b37-d5fa-b900-d0ddf8672e42@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-11-21_02:2019-11-21,2019-11-21 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 lowpriorityscore=0 adultscore=0 mlxlogscore=999 priorityscore=1501 suspectscore=0 impostorscore=0 mlxscore=0 clxscore=1015 spamscore=0 phishscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911210104 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 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: thuth@redhat.com, pmorel@linux.ibm.com, cohuck@redhat.com, borntraeger@de.ibm.com, qemu-s390x@nongnu.org, mihajlov@linux.ibm.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Db1jOXmY5b35wzvBbi16AKuqdRsS9ri4z Content-Type: multipart/mixed; boundary="dPYDsU1T0XCepjqsnG4d8KGtGh3wYiJEf" --dPYDsU1T0XCepjqsnG4d8KGtGh3wYiJEf Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 11/21/19 12:24 PM, David Hildenbrand wrote: > On 20.11.19 12:43, Janosch Frank wrote: >> Status storing is obviously not done by qemu anymore. >> >> Signed-off-by: Janosch Frank >> --- >> target/s390x/sigp.c | 7 +++++-- >> 1 file changed, 5 insertions(+), 2 deletions(-) >> >> diff --git a/target/s390x/sigp.c b/target/s390x/sigp.c >> index 2ce22d4dc1..68634d694a 100644 >> --- a/target/s390x/sigp.c >> +++ b/target/s390x/sigp.c >> @@ -144,7 +144,9 @@ static void sigp_stop_and_store_status(CPUState *c= s, run_on_cpu_data arg) >> case S390_CPU_STATE_STOPPED: >> /* already stopped, just store the status */ >> cpu_synchronize_state(cs); >> - s390_store_status(cpu, S390_STORE_STATUS_DEF_ADDR, true); >> + if (!cpu->env.pv) { >> + s390_store_status(cpu, S390_STORE_STATUS_DEF_ADDR, true);= >> + } >=20 > Confused, how is that case handled? The CPU is already stopped, so it=20 > won't be run again (consequently, next SIE entry can't store it). Who=20 > will store the status? Firmware does some magic >=20 >> break; >> } >> si->cc =3D SIGP_CC_ORDER_CODE_ACCEPTED; >> @@ -497,7 +499,8 @@ void do_stop_interrupt(CPUS390XState *env) >> if (s390_cpu_set_state(S390_CPU_STATE_STOPPED, cpu) =3D=3D 0) { >> qemu_system_shutdown_request(SHUTDOWN_CAUSE_GUEST_SHUTDOWN);= >> } >> - if (cpu->env.sigp_order =3D=3D SIGP_STOP_STORE_STATUS) { >> + /* Storing will occur on next SIE entry for fmt 4 */ >> + if (cpu->env.sigp_order =3D=3D SIGP_STOP_STORE_STATUS && !env->pv= ) { >> s390_store_status(cpu, S390_STORE_STATUS_DEF_ADDR, true); >> } >> env->sigp_order =3D 0; >> >=20 >=20 --dPYDsU1T0XCepjqsnG4d8KGtGh3wYiJEf-- --Db1jOXmY5b35wzvBbi16AKuqdRsS9ri4z Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEwGNS88vfc9+v45Yq41TmuOI4ufgFAl3WdQAACgkQ41TmuOI4 ufgVlg/+L1YlqQ1lhxxobKCz0IBoAg3w1qSXDVleZnmtkeP65VWQJEiRfldRlxhy nL78HterCh23WvEQGyXGswHXfh1LsvRlhWXN881fhO9BzpG+bMieBIC17B5mPFB5 b526Zw3vJMKsWwTHS0ImtPah2NmK2zOcu2zcOWx7S8/XF6WQUVpcLTZdSL+RDDhJ VLeVQgSQgPHAXI7NPcq1HqsMC0XUbGqG2ui8yOrwg8CIcCojeH8z/ZXX9zXSQmWS 7jdKjqi3nIJyKWDZzhl2v2qGeQ4XUCVuXiNo3gytQyFExO4J0LKrSQo+LnZqLINy pUn6lzZuC/2w4HbB/UDCd+GnzYsYebhjjoPKfZJ+Uu9XWbhUmbwtxC/NbkmUhHPG RdCMsyjf+jUaIMFolaj7cgHOZq3rcJEBijfqlsjBZ7pP4bCQ/8E1dqzxy2iGU4tT x8OGHzjwc/8yUwYX0z09EKofCnZH8STC6R/3gqjmjtvvt7J7fovUugLIbfH7zP/S bLmu/FCRnReWPSnH45R9iG/Y/nsu/B412I03dIgRFqClpgHnIWsJvNQC1oYQ2YTJ o9uqxFpUCF1STadjy2Y2HGiG01jc/KoHVMU1NWQj/GP6Xt+pX3EnOhsLMOtNUzXe 83dpk20DCgRul8pJM6VNEF4WvSuuLueeBVkX7puo5kaomOUFYD8= =GDiW -----END PGP SIGNATURE----- --Db1jOXmY5b35wzvBbi16AKuqdRsS9ri4z--