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Tue, 21 Jul 2020 12:25:35 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0A1B44C044; Tue, 21 Jul 2020 12:25:35 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 989044C040; Tue, 21 Jul 2020 12:25:34 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.20.173]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 21 Jul 2020 12:25:34 +0000 (GMT) Subject: Re: [PATCH 1/1] s390x/protvirt: allow to IPL secure execution guests with -no-reboot To: Christian Borntraeger , qemu-devel , Cornelia Huck References: <20200721103202.30610-1-borntraeger@de.ibm.com> From: Janosch Frank Autocrypt: addr=frankja@linux.ibm.com; prefer-encrypt=mutual; keydata= mQINBFubpD4BEADX0uhkRhkj2AVn7kI4IuPY3A8xKat0ihuPDXbynUC77mNox7yvK3X5QBO6 qLqYr+qrG3buymJJRD9xkp4mqgasHdB5WR9MhXWKH08EvtvAMkEJLnqxgbqf8td3pCQ2cEpv 15mH49iKSmlTcJ+PvJpGZcq/jE42u9/0YFHhozm8GfQdb9SOI/wBSsOqcXcLTUeAvbdqSBZe zuMRBivJQQI1esD9HuADmxdE7c4AeMlap9MvxvUtWk4ZJ/1Z3swMVCGzZb2Xg/9jZpLsyQzb lDbbTlEeyBACeED7DYLZI3d0SFKeJZ1SUyMmSOcr9zeSh4S4h4w8xgDDGmeDVygBQZa1HaoL Esb8Y4avOYIgYDhgkCh0nol7XQ5i/yKLtnNThubAcxNyryw1xSstnKlxPRoxtqTsxMAiSekk 0m3WJwvwd1s878HrQNK0orWd8BzzlSswzjNfQYLF466JOjHPWFOok9pzRs+ucrs6MUwDJj0S cITWU9Rxb04XyigY4XmZ8dywaxwi2ZVTEg+MD+sPmRrTw+5F+sU83cUstuymF3w1GmyofgsU Z+/ldjToHnq21MNa1wx0lCEipCCyE/8K9B9bg9pUwy5lfx7yORP3JuAUfCYb8DVSHWBPHKNj HTOLb2g2UT65AjZEQE95U2AY9iYm5usMqaWD39pAHfhC09/7NQARAQABtCVKYW5vc2NoIEZy YW5rIDxmcmFua2phQGxpbnV4LmlibS5jb20+iQI3BBMBCAAhBQJbm6Q+AhsjBQsJCAcCBhUI CQoLAgQWAgMBAh4BAheAAAoJEONU5rjiOLn4p9gQALjkdj5euJVI2nNT3/IAxAhQSmRhPEt0 AmnCYnuTcHRWPujNr5kqgtyER9+EMQ0ZkX44JU2q7OWxTdSNSAN/5Z7qmOR9JySvDOf4d3mS bMB5zxL9d8SbnSs1uW96H9ZBTlTQnmLfsiM9TetAjSrR8nUmjGhe2YUhJLR1v1LguME+YseT eXnLzIzqqpu311/eYiiIGcmaOjPCE+vFjcXL5oLnGUE73qSYiujwhfPCCUK0850o1fUAYq5p CNBCoKT4OddZR+0itKc/cT6NwEDwdokeg0+rAhxb4Rv5oFO70lziBplEjOxu3dqgIKbHbjza EXTb+mr7VI9O4tTdqrwJo2q9zLqqOfDBi7NDvZFLzaCewhbdEpDYVu6/WxprAY94hY3F4trT rQMHJKQENtF6ZTQc9fcT5I3gAmP+OEvDE5hcTALpWm6Z6SzxO7gEYCnF+qGXqp8sJVrweMub UscyLqHoqdZC2UG4LQ1OJ97nzDpIRe0g6oJ9ZIYHKmfw5jjwH6rASTld5MFWajWdNsqK15k/ RZnHAGICKVIBOBsq26m4EsBlfCdt3b/6emuBjUXR1pyjHMz2awWzCq6/6OWs5eANZ0sdosNq dq2v0ULYTazJz2rlCXV89qRa7ukkNwdBSZNEwsD4eEMicj1LSrqWDZMAALw50L4jxaMD7lPL jJbauQINBFubpD4BEADAcUTRqXF/aY53OSH7IwIK9lFKxIm0IoFkOEh7LMfp7FGzaP7ANrZd cIzhZi38xyOkcaFY+npGEWvko7rlIAn0JpBO4x3hfhmhBD/WSY8LQIFQNNjEm3vzrMo7b9Jb JAqQxfbURY3Dql3GUzeWTG9uaJ00u+EEPlY8zcVShDltIl5PLih20e8xgTnNzx5c110lQSu0 iZv2lAE6DM+2bJQTsMSYiwKlwTuv9LI9Chnoo6+tsN55NqyMxYqJgElk3VzlTXSr3+rtSCwf tq2cinETbzxc1XuhIX6pu/aCGnNfuEkM34b7G1D6CPzDMqokNFbyoO6DQ1+fW6c5gctXg/lZ 602iEl4C4rgcr3+EpfoPUWzKeM8JXv5Kpq4YDxhvbitr8Dm8gr38+UKFZKlWLlwhQ56r/zAU v6LIsm11GmFs2/cmgD1bqBTNHHcTWwWtRTLgmnqJbVisMJuYJt4KNPqphTWsPY8SEtbufIlY HXOJ2lqUzOReTrie2u0qcSvGAbSfec9apTFl2Xko/ddqPcZMpKhBiXmY8tJzSPk3+G4tqur4 6TYAm5ouitJsgAR61Cu7s+PNuq/pTLDhK+6/Njmc94NGBcRA4qTuysEGE79vYWP2oIAU4Fv6 gqaWHZ4MEI2XTqH8wiwzPdCQPYsSE0fXWiYu7ObeErT6iLSTZGx4rQARAQABiQIfBBgBCAAJ BQJbm6Q+AhsMAAoJEONU5rjiOLn4DDEP/RuyckW65SZcPG4cMfNgWxZF8rVjeVl/9PBfy01K 8R0hajU40bWtXSMiby7j0/dMjz99jN6L+AJHJvrLz4qYRzn2Ys843W+RfXj62Zde4YNBE5SL jJweRCbMWKaJLj6499fctxTyeb9+AMLQS4yRSwHuAZLmAb5AyCW1gBcTWZb8ON5BmWnRqeGm IgC1EvCnHy++aBnHTn0m+zV89BhTLTUal35tcjUFwluBY39R2ux/HNlBO1GY3Z+WYXhBvq7q katThLjaQSmnOrMhzqYmdShP1leFTVbzXUUIYv/GbynO/YrL2gaQpaP1bEUEi8lUAfXJbEWG dnHFkciryi092E8/9j89DJg4mmZqOau7TtUxjRMlBcIliXkzSLUk+QvD4LK1kWievJse4mte FBdkWHfP4BH/+8DxapRcG1UAheSnSRQ5LiO50annOB7oXF+vgKIaie2TBfZxQNGAs3RQ+bga DchCqFm5adiSP5+OT4NjkKUeGpBe/aRyQSle/RropTgCi85pje/juYEn2P9UAgkfBJrOHvQ9 Z+2Sva8FRd61NJLkCJ4LFumRn9wQlX2icFbi8UDV3do0hXJRRYTWCxrHscMhkrFWLhYiPF4i phX7UNdOWBQ90qpHyAxHmDazdo27gEjfvsgYMdveKknEOTEb5phwxWgg7BcIDoJf9UMC Message-ID: Date: Tue, 21 Jul 2020 14:25:33 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.8.0 MIME-Version: 1.0 In-Reply-To: <20200721103202.30610-1-borntraeger@de.ibm.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="biN5jbTfEsejssQbTNy9rLOIHxzLDeMcB" X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235, 18.0.687 definitions=2020-07-21_05:2020-07-21, 2020-07-21 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 mlxlogscore=999 suspectscore=0 lowpriorityscore=0 adultscore=0 priorityscore=1501 mlxscore=0 phishscore=0 impostorscore=0 spamscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007210087 Received-SPF: pass client-ip=148.163.158.5; envelope-from=frankja@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/21 08:25:40 X-ACL-Warn: Detected OS = Linux 3.x [generic] X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action 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: Halil Pasic , Thomas Huth , qemu-s390x , David Hildenbrand 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) --biN5jbTfEsejssQbTNy9rLOIHxzLDeMcB Content-Type: multipart/mixed; boundary="TI8iq1oRq2XBumaAlA8owMwifRYn9Z8ua" --TI8iq1oRq2XBumaAlA8owMwifRYn9Z8ua Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 7/21/20 12:32 PM, Christian Borntraeger wrote: > Right now -no-reboot does prevent secure execution guests from running.= s/-no-reboot/--no-reboot/ > This is right from an implementation aspect, as we have modeled the > transition from non-secure to secure as a program directed IPL. s/secure/protected/ > From a user perspective, this is not the behavior of least surprise. >=20 > We should implement the IPL into secure mode similar to the functions s/secure/protected/ > that we use for kdump/kexec. In other words we do not stop here when > -no-reboot is specified on the command line. Like function 0 or functio= n > 1 Function 10 is not a classic reboot. For example it can only be calle= d s/Function/function/ and maybe also add a comma > once. To call it a 2nd time a real reboot/reset must happen in-between.= > So function code 10 is more or less a state transition reset, but not a= > "standard" reset or reboot. >=20 > Fixes: 4d226deafc44 ("s390x: protvirt: Support unpack facility") > Signed-off-by: Christian Borntraeger Reviewed-by: Janosch Frank > --- > hw/s390x/ipl.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) >=20 > diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c > index ce21494c08..e312a35133 100644 > --- a/hw/s390x/ipl.c > +++ b/hw/s390x/ipl.c > @@ -633,7 +633,8 @@ void s390_ipl_reset_request(CPUState *cs, enum s390= _reset reset_type) > } > } > if (reset_type =3D=3D S390_RESET_MODIFIED_CLEAR || > - reset_type =3D=3D S390_RESET_LOAD_NORMAL) { > + reset_type =3D=3D S390_RESET_LOAD_NORMAL || > + reset_type =3D=3D S390_RESET_PV) { > /* ignore -no-reboot, send no event */ > qemu_system_reset_request(SHUTDOWN_CAUSE_SUBSYSTEM_RESET); > } else { >=20 --TI8iq1oRq2XBumaAlA8owMwifRYn9Z8ua-- --biN5jbTfEsejssQbTNy9rLOIHxzLDeMcB Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEwGNS88vfc9+v45Yq41TmuOI4ufgFAl8W3r0ACgkQ41TmuOI4 ufjBDg//VWIodJKSIfBrrEVRmbTbLfLcUuvaeAkKtgqVIF3N+AwfvyVaj6yKqt1I apBot+z7OdQU9lpatf7HkEGi8xxQA0cEI2yj6dY6Mvy0QPrE8I2s2ozy+3hODaOU jpx+RfBMJf1064vWoHtqCc9sJC1+mNBF5ZT9QTFwoJP6sDFCG7e1KrxRdgfUDIda lfbi/o7gE3DMxFf4fhtt65FUWyMJ2EOu8FlWzwVt9scjEHFtnEU9s4nYEbKlM05d jkC8ekrnVZrbU9vqwpTMdT/9wTHitN8OQ1+oTHHasaZFNf68z3yIMn6dsIyAxghI xn4RFEWfn57Txz/fgAgCs5zXi9brlfCHlPVjrN2j0A5onC6UlWGq7ufxq+Rp8X2k DGUzWW1oj2+DdenGom+IkktgiaaTCkzX7/a5NdLhkNC000Q/Ldyb9DXDS6pyI57A 97VeXobW6XXpeMaG+TlKgBWDsOgNWRqWfKByYkr2gjRK7JWpXzM5LnkDEQLfYNW0 c8VuQB+pSLq0VqKshElou0cC1MiZ1q0Uj9Upz2SmczGhuysn1a2mSR4i0nUyriHX 8H7HRoy8b7WE75eBOTOuhoRoP5PNSP9mnhdNDzfmpr44I6V6x9MU4+Cf86fjfz7O mm5rBln9a2nt3PWzqUFxAcTx5s1nN//9dbSxHAf9a5E8HrnhiWY= =SVvA -----END PGP SIGNATURE----- --biN5jbTfEsejssQbTNy9rLOIHxzLDeMcB--