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Searched refs:polarization (Results 1 – 13 of 13) sorted by relevance

/openbmc/qemu/docs/devel/
H A Ds390-cpu-topology.rst122 When a guest requests a modification of the polarization,
126 vertical polarization.
131 entitlement, giving 6 possibilities for vCPU polarization:
141 Perform Topology Function PTF(0) to request an horizontal polarization:
152 "polarization": "horizontal"
156 QAPI query command: query-s390x-cpu-polarization
159 The query command query-s390x-cpu-polarization returns the current
160 CPU polarization of the machine.
161 In this case the guest previously issued a PTF(1) to request vertical polarization:
165 { "execute": "query-s390x-cpu-polarization" }
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/openbmc/qemu/hw/s390x/
H A Dcpu-topology.c38 .polarization = S390_CPU_POLARIZATION_HORIZONTAL,
108 S390CpuPolarization polarization; in s390_handle_ptf() local
128 polarization = S390_CPU_POLARIZATION_VERTICAL; in s390_handle_ptf()
131 polarization = S390_CPU_POLARIZATION_HORIZONTAL; in s390_handle_ptf()
134 if (s390_topology.polarization == polarization) { in s390_handle_ptf()
138 s390_topology.polarization = polarization; in s390_handle_ptf()
140 qapi_event_send_cpu_polarization_change(polarization); in s390_handle_ptf()
159 s390_topology.polarization = S390_CPU_POLARIZATION_HORIZONTAL; in s390_topology_reset()
467 info->polarization = s390_topology.polarization; in qmp_query_s390x_cpu_polarization()
/openbmc/qemu/qapi/
H A Dmachine-target.json410 # An enumeration of CPU polarization that can be assumed by a virtual
462 # Emitted when the guest asks to change the polarization.
466 # polarization.
468 # On horizontal polarization the host is expected to provision all
471 # On vertical polarization the host can provision each vCPU
475 # @polarization: polarization specified by the guest
490 'data': { 'polarization': 'S390CpuPolarization' },
498 # The result of a CPU polarization query.
500 # @polarization: the CPU polarization
505 'data': { 'polarization': 'S390CpuPolarization' },
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/openbmc/qemu/docs/system/s390x/
H A Dcpu-topology.rst23 monitor polarization changes, see ``docs/devel/s390-cpu-topology.rst``.
172 The polarization affects how the CPUs of a shared host are utilized/distributed
174 The guest determines the polarization by using the PTF instruction.
179 The horizontal polarization is the default model on boot and after
180 subsystem reset. When horizontal polarization is in effect all vCPUs should
183 In the vertical polarization model vCPUs are unequal, but overall more resources
189 horizontal polarization.
194 The vertical polarization specifies that the guest's vCPU can get
246 successfully enables vertical polarization by using the PTF instruction.
/openbmc/linux/Documentation/userspace-api/media/dvb/
H A Dfe-set-voltage.rst39 LNBf type, the polarization or the intermediate frequency (IF) of the
47 the capability of setting polarization or IF. So, on those cases, setting
H A Dfrontend.rst43 control the antenna subsystem, selecting the polarization and choosing
H A Dintro.rst79 equipment control (SEC), which allows control of LNB polarization,
/openbmc/qemu/include/hw/s390x/
H A Dcpu-topology.h40 S390CpuPolarization polarization; member
/openbmc/linux/Documentation/hwmon/
H A Dtwl4030-madc-hwmon.rst42 15 VRUSB Supply/Speaker left/Speaker right polarization level
/openbmc/linux/arch/s390/kernel/
H A Dsmp.c81 signed char polarization; /* physical polarization */ member
734 pcpu_devices[cpu].polarization = val; in smp_cpu_set_polarization()
739 return pcpu_devices[cpu].polarization; in smp_cpu_get_polarization()
H A Dtopology.c453 static DEVICE_ATTR(polarization, 0444, cpu_polarization_show, NULL);
/openbmc/qemu/target/s390x/kvm/
H A Dstsi-topology.c191 .vertical = s390_topology.polarization == S390_CPU_POLARIZATION_VERTICAL, in s390_topology_from_cpu()
/openbmc/qemu/tests/functional/
H A Dtest_s390x_topology.py237 def check_polarization(self, polarization): argument