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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 21 Nov 2019 14:29:47 -0000 Received: from d06av26.portsmouth.uk.ibm.com (d06av26.portsmouth.uk.ibm.com [9.149.105.62]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xALETjdg47579310 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 21 Nov 2019 14:29:45 GMT Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id A996CAE057; Thu, 21 Nov 2019 14:29:45 +0000 (GMT) Received: from d06av26.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 319CEAE053; Thu, 21 Nov 2019 14:29:45 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.70.129]) by d06av26.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 21 Nov 2019 14:29:45 +0000 (GMT) Subject: Re: [PATCH 08/15] s390x: protvirt: KVM intercept changes To: Cornelia Huck References: <20191120114334.2287-1-frankja@linux.ibm.com> <20191120114334.2287-9-frankja@linux.ibm.com> <20191121150704.4d5a09ef.cohuck@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: <20191121150704.4d5a09ef.cohuck@redhat.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="DAyGnchwyylMYotNxFD9Jinc4CTtAvbG2" X-TM-AS-GCONF: 00 x-cbid: 19112114-0028-0000-0000-000003BD9960 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19112114-0029-0000-0000-00002480C1E4 Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-11-21_03:2019-11-21,2019-11-21 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 spamscore=0 lowpriorityscore=0 mlxlogscore=999 priorityscore=1501 impostorscore=0 clxscore=1015 suspectscore=0 malwarescore=0 bulkscore=0 mlxscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911210132 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, david@redhat.com, qemu-devel@nongnu.org, 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) --DAyGnchwyylMYotNxFD9Jinc4CTtAvbG2 Content-Type: multipart/mixed; boundary="OMU1TGKkAspeUxloh9McUnocbCeFQIzj2" --OMU1TGKkAspeUxloh9McUnocbCeFQIzj2 Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 11/21/19 3:07 PM, Cornelia Huck wrote: > On Wed, 20 Nov 2019 06:43:27 -0500 > Janosch Frank wrote: >=20 >> 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, but the 108 is a notification, that something >> happened and the hypervisor might need to adjust its tracking data to >> that fact. An example for that is the set prefix notification >> interception, where KVM only reads the new prefix, but does not update= >> the prefix in the state description. >> >> Signed-off-by: Janosch Frank >> --- >> target/s390x/kvm.c | 6 ++++++ >> 1 file changed, 6 insertions(+) >> >> diff --git a/target/s390x/kvm.c b/target/s390x/kvm.c >> index 418154ccfe..58251c0229 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_NOT 0x6c >=20 > _NOTIF ? Yeah, forgot about that >=20 >> =20 >> #define NR_LOCAL_IRQS 32 >> /* >> @@ -151,6 +153,7 @@ static int cap_s390_irq; >> static int cap_ri; >> static int cap_gs; >> static int cap_hpage_1m; >> +static int cap_protvirt; >> =20 >> static int active_cmma; >> =20 >> @@ -336,6 +339,7 @@ int kvm_arch_init(MachineState *ms, KVMState *s) >> cap_async_pf =3D kvm_check_extension(s, KVM_CAP_ASYNC_PF); >> cap_mem_op =3D kvm_check_extension(s, KVM_CAP_S390_MEM_OP); >> cap_s390_irq =3D kvm_check_extension(s, KVM_CAP_S390_INJECT_IRQ);= >> + cap_protvirt =3D kvm_check_extension(s, KVM_CAP_S390_PROTECTED); >=20 > You don't seem to do anything with this yet? No, I'm still a bit in the dark about how we want to tie protvirt into qe= mu. >=20 >> =20 >> if (!kvm_check_extension(s, KVM_CAP_S390_GMAP) >> || !kvm_check_extension(s, KVM_CAP_S390_COW)) { >> @@ -1664,6 +1668,8 @@ 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_NOT: >> r =3D handle_instruction(cpu, run); >=20 > Doesn't handle_instruction() want to know whether it got a request for > emulation vs a notification? Currently not, the sclp patch looks at the vcpu run icptcode to figure out what's going on. >=20 >> break; >> case ICPT_PROGRAM: >=20 >=20 --OMU1TGKkAspeUxloh9McUnocbCeFQIzj2-- --DAyGnchwyylMYotNxFD9Jinc4CTtAvbG2 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEwGNS88vfc9+v45Yq41TmuOI4ufgFAl3Wn1gACgkQ41TmuOI4 ufiXIw//c0rlKaKmvRLnS/44GBXw2OgzCbd68o4GA2BvvvQ86HtcJffHkUVKBIAV Atzn7PSJvwjS9+KVMN5l8wpDLjejxV2+84OasS/8+97uAbIcqt/0zIu1sSoZeEfI NjzC4eOzovpsHldckAW5BvyzpXkMWACT7C4/L4FA+Bt6niZwaxI8SxwIv6R4N8Hq vYZ9bKeKuhmPQRm84es5L04dkWNpOxDi0hmOWs7+wgKa4u+kw124nJTj6plHtQOj LZimFmM+XaDv0++R0aFy1bmeD++3bNcny1aMMiyR1YjNwePcY0XHkiwFJn4+JQM5 IyeDju+yyOa0S1Mm+tAbIS0jYC/RxZhRxgiJFOYKVosLqy06h1Zknh1/34GfZUP0 lRVY+7yXm44S4uWBvmevFI9n61aBsBt/3jfeGuZl+nlhfVu7lPY1lx4qA7byy0Zz gTn9IsQSbNuzaG8Fk3oYvOMtkiwQUrZE02br50YrCLufLEhuH4Ft2DsuxXDWFS+g RPl1ELfj021FRD3Wx8H+489FzTEIOdD5vTpzf9mtULSR4Ae8GccchONUCxuFpB/n c+Ydd3IOPudqu5Oo20aR5V2cTp0GVgcoOEEYDWCN/4sGi3aMPeWJ5FYn17tjUU9p EkgeFAhIvWrPIeET8b3k1oMhRWzC0LNPcrT+pGo0qPKDenNpvDg= =5t7u -----END PGP SIGNATURE----- --DAyGnchwyylMYotNxFD9Jinc4CTtAvbG2--