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Fri, 20 Jan 2023 14:22:12 +0000 (GMT) Message-ID: <772f43f2-9dc3-befb-9061-effda2e357eb@linux.ibm.com> Date: Fri, 20 Jan 2023 15:22:12 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.6.0 Subject: Re: [PATCH v14 10/11] qapi/s390/cpu topology: POLARITY_CHANGE qapi event To: Thomas Huth , qemu-s390x@nongnu.org Cc: qemu-devel@nongnu.org, borntraeger@de.ibm.com, pasic@linux.ibm.com, richard.henderson@linaro.org, david@redhat.com, cohuck@redhat.com, mst@redhat.com, pbonzini@redhat.com, kvm@vger.kernel.org, ehabkost@redhat.com, marcel.apfelbaum@gmail.com, eblake@redhat.com, armbru@redhat.com, seiden@linux.ibm.com, nrb@linux.ibm.com, scgl@linux.ibm.com, frankja@linux.ibm.com, berrange@redhat.com, clg@kaod.org References: <20230105145313.168489-1-pmorel@linux.ibm.com> <20230105145313.168489-11-pmorel@linux.ibm.com> <5f177a1b-90d6-7e30-5b58-cdcae7919363@linux.ibm.com> <648e62ab-9d66-9a5a-0a03-124c16b85805@redhat.com> Content-Language: en-US From: Pierre Morel In-Reply-To: <648e62ab-9d66-9a5a-0a03-124c16b85805@redhat.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-GUID: QamKRmy4ygtsxSOgYeNiAnPHfRD0siJz X-Proofpoint-ORIG-GUID: ao9lXoyzQK9iV_tQHhzkFiIHXeijHB40 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-01-20_08,2023-01-20_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 spamscore=0 impostorscore=0 suspectscore=0 adultscore=0 lowpriorityscore=0 clxscore=1015 phishscore=0 priorityscore=1501 mlxlogscore=999 bulkscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2301200133 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On 1/20/23 12:56, Thomas Huth wrote: > On 18/01/2023 18.09, Pierre Morel wrote: >> >> On 1/12/23 12:52, Thomas Huth wrote: >>> On 05/01/2023 15.53, Pierre Morel wrote: > ...>>> +# OK >>>> +# Emitted when the guest asks to change the polarity. >>>> +# >>>> +# @polarity: polarity specified by the guest >>> >>> Please elaborate: Where does the value come from (the PTF >>> instruction)? Which values are possible? >> >> Yes what about: >> >> # @polarity: the guest can specify with the PTF instruction a horizontal >> #            or a vertical polarity. > > Maybe something like: "The guest can tell the host (via the PTF > instruction) whether a CPU should have horizontal or vertical polarity." ? Yes thanks, much better. > >> #         On horizontal polarity the host is expected to provision >> #            the vCPU equally. > > Maybe: "all vCPUs equally" ? > Or: "each vCPU equally" ? yes, thx. > >> #            On vertical polarity the host can provision each vCPU >> #            differently >> #            The guest can get information on the provisioning with >> #            the STSI(15) instruction. > >  Thomas > I make the changes. Regards, Pierre -- Pierre Morel IBM Lab Boeblingen