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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 26 Feb 2020 13:46:06 -0000 Received: from d06av22.portsmouth.uk.ibm.com (d06av22.portsmouth.uk.ibm.com [9.149.105.58]) by b06avi18878370.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 01QDk6c146137636 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 26 Feb 2020 13:46:06 GMT Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id F24034C058; Wed, 26 Feb 2020 13:46:05 +0000 (GMT) Received: from d06av22.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C06524C04E; Wed, 26 Feb 2020 13:46:05 +0000 (GMT) Received: from oc7455500831.ibm.com (unknown [9.152.224.219]) by d06av22.portsmouth.uk.ibm.com (Postfix) with ESMTP; Wed, 26 Feb 2020 13:46:05 +0000 (GMT) Subject: Re: [PATCH v5 01/18] s390x: Use constant for ESA PSW address To: Janosch Frank , qemu-devel@nongnu.org References: <20200226122038.61481-1-frankja@linux.ibm.com> <20200226122038.61481-2-frankja@linux.ibm.com> From: Christian Borntraeger Autocrypt: addr=borntraeger@de.ibm.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200226122038.61481-2-frankja@linux.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 20022613-0016-0000-0000-000002EA775B X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20022613-0017-0000-0000-0000334DA709 Message-Id: <0ac821dd-09a8-3b77-d4db-c167f5a4ac77@de.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-02-26_04:2020-02-26, 2020-02-26 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 phishscore=0 spamscore=0 suspectscore=0 impostorscore=0 clxscore=1015 mlxscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002260102 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" On 26.02.20 13:20, Janosch Frank wrote: > Lets make it a bit more clear that we're extracting the 31 bit address > from the short psw. > > Signed-off-by: Janosch Frank PSW_MASK_ESA_MASK and PSW_MASK_ESA_ADDR look pretty similar, but I cant find a good name. We could use ~PSW_MASK_ESA_ADDR as an alternative. Either way, this makes sense. Reviewed-by: Christian Borntraeger > --- > 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, Error **errp) > /* if not Linux load the address of the (short) IPL PSW */ > ipl_psw = rom_ptr(4, 4); > if (ipl_psw) { > - pentry = be32_to_cpu(*ipl_psw) & 0x7fffffffUL; > + pentry = 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 = S390_CPU(s); > uint64_t spsw = ldq_phys(s->as, 0); > > - cpu->env.psw.mask = spsw & 0xffffffff80000000ULL; > + cpu->env.psw.mask = spsw & PSW_MASK_ESA_MASK; > /* > * Invert short psw indication, so SIE will report a specification > * exception if it was not set. > */ > cpu->env.psw.mask ^= PSW_MASK_SHORTPSW; > - cpu->env.psw.addr = spsw & 0x7fffffffULL; > + cpu->env.psw.addr = spsw & PSW_MASK_ESA_ADDR; > > 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 > > #undef PSW_ASC_PRIMARY > #undef PSW_ASC_ACCREG >