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| author | Pierre Morel <pmorel@linux.ibm.com> | 2023-10-16 20:39:11 +0200 |
|---|---|---|
| committer | Thomas Huth <thuth@redhat.com> | 2023-10-20 07:16:53 +0200 |
| commit | af37bad52e7c216c044f919d6254c77be0eacbc6 (patch) | |
| tree | 1433b37a9ee3822f181720969169bb67bd16a0bd /include | |
| parent | 3d6e75f4df67980479cc0912b842202f2093aeeb (diff) | |
| download | qemu-af37bad52e7c216c044f919d6254c77be0eacbc6.zip qemu-af37bad52e7c216c044f919d6254c77be0eacbc6.tar.gz qemu-af37bad52e7c216c044f919d6254c77be0eacbc6.tar.bz2 | |
s390x/cpu topology: interception of PTF instruction
When the host supports the CPU topology facility, the PTF
instruction with function code 2 is interpreted by the SIE,
provided that the userland hypervisor activates the interpretation
by using the KVM_CAP_S390_CPU_TOPOLOGY KVM extension.
The PTF instructions with function code 0 and 1 are intercepted
and must be emulated by the userland hypervisor.
During RESET all CPU of the configuration are placed in
horizontal polarity.
Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Reviewed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Co-developed-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Signed-off-by: Nina Schoetterl-Glausch <nsg@linux.ibm.com>
Message-ID: <20231016183925.2384704-8-nsg@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/s390x/s390-virtio-ccw.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/hw/s390x/s390-virtio-ccw.h b/include/hw/s390x/s390-virtio-ccw.h index 9bba21a..c1d46e7 100644 --- a/include/hw/s390x/s390-virtio-ccw.h +++ b/include/hw/s390x/s390-virtio-ccw.h @@ -30,6 +30,12 @@ struct S390CcwMachineState { uint8_t loadparm[8]; }; +#define S390_PTF_REASON_NONE (0x00 << 8) +#define S390_PTF_REASON_DONE (0x01 << 8) +#define S390_PTF_REASON_BUSY (0x02 << 8) +#define S390_TOPO_FC_MASK 0xffUL +void s390_handle_ptf(S390CPU *cpu, uint8_t r1, uintptr_t ra); + struct S390CcwMachineClass { /*< private >*/ MachineClass parent_class; |