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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 27 Feb 2020 07:53:47 -0000 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps3075.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 01R7rk4I57016496 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 27 Feb 2020 07:53:47 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id E0C20A4062; Thu, 27 Feb 2020 07:53:46 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 8C0D0A405F; Thu, 27 Feb 2020 07:53:46 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.177.63]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTP; Thu, 27 Feb 2020 07:53:46 +0000 (GMT) Subject: Re: [PATCH v5 01/18] s390x: Use constant for ESA PSW address To: Cornelia Huck , David Hildenbrand References: <20200226122038.61481-1-frankja@linux.ibm.com> <20200226122038.61481-2-frankja@linux.ibm.com> <3d6f7f88-0a77-90f0-4e26-ee826593d55f@redhat.com> <20200226185118.316055d5.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/68.2.2 MIME-Version: 1.0 In-Reply-To: <20200226185118.316055d5.cohuck@redhat.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="4xSbrLH7nYkiQ2cMqnFPPlssim1wWwdz6" X-TM-AS-GCONF: 00 x-cbid: 20022707-0008-0000-0000-00000356DAD8 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20022707-0009-0000-0000-00004A77FC18 Message-Id: <7d9a3dcb-29c5-724c-70d8-9c7559ae6d64@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-02-27_02:2020-02-26, 2020-02-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 mlxlogscore=999 suspectscore=0 malwarescore=0 mlxscore=0 priorityscore=1501 lowpriorityscore=0 clxscore=1015 bulkscore=0 adultscore=0 phishscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002270062 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] 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: borntraeger@de.ibm.com, qemu-s390x@nongnu.org, qemu-devel@nongnu.org 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) --4xSbrLH7nYkiQ2cMqnFPPlssim1wWwdz6 Content-Type: multipart/mixed; boundary="XMoEWbxMkDY7EuYmCcEhbZ2CpGHOKyIYE" --XMoEWbxMkDY7EuYmCcEhbZ2CpGHOKyIYE Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable On 2/26/20 6:51 PM, Cornelia Huck wrote: > On Wed, 26 Feb 2020 15:27:52 +0100 > David Hildenbrand wrote: >=20 >> On 26.02.20 13:20, Janosch Frank wrote: >>> Lets make it a bit more clear that we're extracting the 31 bit addres= s >=20 > s/Lets/Let's/ :) Ack >=20 >>> from the short psw. >>> >>> Signed-off-by: Janosch Frank >>> --- >>> hw/s390x/ipl.c | 2 +- >>> target/s390x/cpu.c | 4 ++-- >>> target/s390x/cpu.h | 1 + >>> 3 files changed, 4 insertions(+), 3 deletions(-) >>> >>> diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c >>> index 7773499d7f..42e21e7a6a 100644 >>> --- a/hw/s390x/ipl.c >>> +++ b/hw/s390x/ipl.c >>> @@ -179,7 +179,7 @@ static void s390_ipl_realize(DeviceState *dev, Er= ror **errp) >>> /* if not Linux load the address of the (short) IPL = PSW */ >>> ipl_psw =3D rom_ptr(4, 4); >>> if (ipl_psw) { >>> - pentry =3D be32_to_cpu(*ipl_psw) & 0x7fffffffUL;= >>> + pentry =3D be32_to_cpu(*ipl_psw) & PSW_MASK_ESA_= ADDR; >>> } else { >>> error_setg(&err, "Could not get IPL PSW"); >>> goto error; >>> diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c >>> index 8da1905485..43360912a0 100644 >>> --- a/target/s390x/cpu.c >>> +++ b/target/s390x/cpu.c >>> @@ -78,13 +78,13 @@ static void s390_cpu_load_normal(CPUState *s) >>> S390CPU *cpu =3D S390_CPU(s); >>> uint64_t spsw =3D ldq_phys(s->as, 0); >>> =20 >>> - cpu->env.psw.mask =3D spsw & 0xffffffff80000000ULL; >>> + cpu->env.psw.mask =3D spsw & PSW_MASK_ESA_MASK; >>> /* >>> * Invert short psw indication, so SIE will report a specificati= on >>> * exception if it was not set. >>> */ >>> cpu->env.psw.mask ^=3D PSW_MASK_SHORTPSW; >>> - cpu->env.psw.addr =3D spsw & 0x7fffffffULL; >>> + cpu->env.psw.addr =3D spsw & PSW_MASK_ESA_ADDR; >>> =20 >>> s390_cpu_set_state(S390_CPU_STATE_OPERATING, cpu); >>> } >>> diff --git a/target/s390x/cpu.h b/target/s390x/cpu.h >>> index 8a557fd8d1..74e66fe0c2 100644 >>> --- a/target/s390x/cpu.h >>> +++ b/target/s390x/cpu.h >>> @@ -277,6 +277,7 @@ extern const VMStateDescription vmstate_s390_cpu;= >>> #define PSW_MASK_64 0x0000000100000000ULL >>> #define PSW_MASK_32 0x0000000080000000ULL >>> #define PSW_MASK_ESA_ADDR 0x000000007fffffffULL >>> +#define PSW_MASK_ESA_MASK 0xffffffff80000000ULL =20 >> >> ..._MASK_..._MASK >> >> Isn't there a better name for all the bits in the PSW that are not an >> address? >> >> PSW_MASK_ESA_BITS >> PSW_MASK_ESA_FLAGS >> ... >=20 > Hm, the PoP says that the PSW "includes the instruction address, > condition code, and other control fields"; it also talks about the > 'short' PSW as being distinct from the 'ESA' PSW (bit 31 may be 0 or 1 > in the short PSW). Maybe >=20 > PSW_MASK_SHORT_ADDR > PSW_MASK_SHORT_CTRL Sure, why not >=20 > (Or keep _ESA_ if renaming creates too much churn.) >=20 >> >>> =20 >>> #undef PSW_ASC_PRIMARY >>> #undef PSW_ASC_ACCREG >>> =20 >> >> >=20 > This patch is also independent of the protected virtualization > support... I plan to send a pull request tomorrow, so I can include > this patch, if we agree on a name for the constant :) Well, you would also need to rename all users of PSW_MASK_ESA_ADDR Let me split that up into two patches, the rename for the ADDR and this one. I'll send it out once I'm more or less awake. --XMoEWbxMkDY7EuYmCcEhbZ2CpGHOKyIYE-- --4xSbrLH7nYkiQ2cMqnFPPlssim1wWwdz6 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEwGNS88vfc9+v45Yq41TmuOI4ufgFAl5XdYoACgkQ41TmuOI4 ufhxFhAA1zUpAP0mocP4+ff4i3YPBI3SHSnrW2tePSwiXyiMuXUx5dfEydFFOlGz yIYpcAeOiEZBisAD1sNn5Kc75Fq/YL38XgnuhOMP8R1NkiaEmAd+lqU1NxbiQ3bR oMHfGTlEm9oj1P3NmC5eej7lYKOyUz9PXLbAFsfD9bGrDSTQeDHH/eZ2KeKmc0NF NVsR4R7sygGChsa7wlWcFU+u9hC/RpBMeTIgaDtS/y6BUkdJa3Ac3PClGoPJ8oTI KOU0B/Ryq1Rc78RYitNH8i50Y7hFAYOGZAyd2jAd2w22DAw3VwyBZLmyYZaZNebx gFu1jsGRD50/4dFZ6+IshaYqaQrbLvgLMwGdH0frhpkyE4u8/yyshUWhzVvFD1E9 Otop5HOoXx7nTd9pGZK4CzIhvDVCddLVNvwomJ9B6MbqwZGGVkSk4DFsBfPUNGGD TLYPeYfNQnegRXJFZKznziaz+JKUg3NG27Z37gozyUfDnnGUtlQA+8pTRgSBoCXb WFlsgZ5JRcoXI8rTmE6ILFI99OVcIABeV4U/slWpKL/z/e725hoCG4dj0daSukN6 AoaJWCFc5P82NiMqb1W9Kf/kwDSwIW9XnQOLTKFwPbBYZXTGJ6IXhwfyan7iRJ7M 0YfUhi+tXOYbLByCQJFYSFhNnxemewmyQs6eAiGeRXWSFLfBVFQ= =pZzi -----END PGP SIGNATURE----- --4xSbrLH7nYkiQ2cMqnFPPlssim1wWwdz6--