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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 10 Mar 2020 15:23:06 -0000 Received: from d06av21.portsmouth.uk.ibm.com (d06av21.portsmouth.uk.ibm.com [9.149.105.232]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 02AFM5I310289492 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 10 Mar 2020 15:22:06 GMT Received: from d06av21.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 634735204E; Tue, 10 Mar 2020 15:23:05 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.23.214]) by d06av21.portsmouth.uk.ibm.com (Postfix) with ESMTP id 133A352050; Tue, 10 Mar 2020 15:23:05 +0000 (GMT) Subject: Re: [PATCH v8 05/15] s390x: protvirt: KVM intercept changes To: Christian Borntraeger , qemu-devel@nongnu.org References: <20200310134008.130038-1-frankja@linux.ibm.com> <20200310134008.130038-6-frankja@linux.ibm.com> <185070ea-2693-cb78-7238-ad08551bfb7c@de.ibm.com> From: Janosch Frank Autocrypt: addr=frankja@linux.ibm.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.2.2 MIME-Version: 1.0 In-Reply-To: <185070ea-2693-cb78-7238-ad08551bfb7c@de.ibm.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="mWEogEgNXKSHNkSsneuuza1006DaNMwQ5" X-TM-AS-GCONF: 00 x-cbid: 20031015-0012-0000-0000-0000038F0B62 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20031015-0013-0000-0000-000021CBD702 Message-Id: <73661caf-bcfd-01b7-e2fd-c01d9a671cc7@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-03-10_08:2020-03-10, 2020-03-10 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 bulkscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 suspectscore=0 impostorscore=0 spamscore=0 adultscore=0 mlxlogscore=999 malwarescore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003100099 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] X-Received-From: 148.163.158.5 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: qemu-s390x@nongnu.org, cohuck@redhat.com, david@redhat.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) --mWEogEgNXKSHNkSsneuuza1006DaNMwQ5 Content-Type: multipart/mixed; boundary="9Ya287EfzC7gzzITN8Jizz0hNGWAym4WW" --9Ya287EfzC7gzzITN8Jizz0hNGWAym4WW Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 3/10/20 4:20 PM, Christian Borntraeger wrote: > On 10.03.20 14:39, Janosch Frank wrote: >> Secure guests no longer intercept with code 4 for an instruction >> interception. Instead they have codes 104 and 108 for secure >> instruction interception and secure instruction notification >> respectively. >> >> The 104 mirrors the 4 interception. >> >> The 108 is a notification interception to let KVM and QEMU know that >> something changed and we need to update tracking information or >> perform specific tasks. It's currently taken for the following >> instructions: >> >> * stpx (To inform about the changed prefix location) >=20 > Set prefix (SPX), no? >=20 >> * sclp (On incorrect SCCB values, so we can inject a IRQ) >> * sigp (All but "stop and store status") >> * diag308 (Subcodes 0/1) >=20 > Furthermore SPX is also not reaching QEMU, no? > Maybe add something like >=20 > Of these exits only sclp errors, state changing sigps and > diag308 will reach QEMU. QEMU will do its parts of the > job, while the ultravisor has done the instruction part of > the job.=20 >=20 > With that > Reviewed-by: Christian Borntraeger Sure, I'll also change secure execution to protected virtualization in the first sentence... >=20 >=20 >> >> Signed-off-by: Janosch Frank >> Reviewed-by: David Hildenbrand >> --- >> target/s390x/kvm.c | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c >> index 1d6fd6a27b..eec0b92479 100644 >> --- a/target/s390x/kvm.c >> +++ b/target/s390x/kvm.c >> @@ -115,6 +115,8 @@ >> #define ICPT_CPU_STOP 0x28 >> #define ICPT_OPEREXC 0x2c >> #define ICPT_IO 0x40 >> +#define ICPT_PV_INSTR 0x68 >> +#define ICPT_PV_INSTR_NOTIFICATION 0x6c >> =20 >> #define NR_LOCAL_IRQS 32 >> /* >> @@ -1693,6 +1695,8 @@ static int handle_intercept(S390CPU *cpu) >> (long)cs->kvm_run->psw_addr); >> switch (icpt_code) { >> case ICPT_INSTRUCTION: >> + case ICPT_PV_INSTR: >> + case ICPT_PV_INSTR_NOTIFICATION: >> r =3D handle_instruction(cpu, run); >> break; >> case ICPT_PROGRAM: >> --9Ya287EfzC7gzzITN8Jizz0hNGWAym4WW-- --mWEogEgNXKSHNkSsneuuza1006DaNMwQ5 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEwGNS88vfc9+v45Yq41TmuOI4ufgFAl5nsNgACgkQ41TmuOI4 ufiLgQ/+Nwy4RcP1M7A9wr7vp13kLCLLeWBaQ+Q4pioVhhHlQVVKUUpHMmSRKWF5 Ws5qNJmfNCyoN1hPpkChyy3ohX3+C1gdkVcrQa0phozmWuch4hRPM0q9DMgYUPO9 dJNxpGviltTQngQZUzFZIJXN4EUYK8rFlfAk2V8lbzgTTKO9F5y1osOoHUqxEjen tCQt2M23BWYIcGA63vkECfDQk7XRgsZKhsUUT2fJ0IuwjPPQCOqzPbvxfGd0X+y+ z6sqQ2BI4x5wFM9pPYtH4GaPzEnm5aVXwMrr4YiLEYtbaeUipjW5b/OL9QeylOv3 KadCiVFDeTjyD8NOh1SvYnMw+M0LvkR6zL7YtPKvZyAII4LfkMcScySlaJipiXqc S6kY8u9H9+Iw7z+27W5UVCGvnekRwLU68niwCAnlFKwyieAi+XbFCpYCPCNQP1Mh 4KHMlHYNDkRCnMNXPJTq+j+Wfp2c8LAzUD/TrusnuQW5EoDGBZxDj9GoEagTPuDy 54a3vSKA10J1CyYgJ11ncOEvwEjvYlDT/8uhle6AKFyXs2aIWPjW90Ydjauk+MvY a3A6S4gqVhAFlG0TDSNwkA54KHHvxg2UwAF1RzZW+00EmZkqctfD1gSRwTcmCLpE FsIzXtmXyvrvCmlfkh0YjIFvkUAx2DIAYgv1C/2pnNVVD5RqW2U= =LkD5 -----END PGP SIGNATURE----- --mWEogEgNXKSHNkSsneuuza1006DaNMwQ5--