s390/kvm: diagnose 0x318 sync and reset
DIAGNOSE 0x318 (diag318) sets information regarding the environment the VM is running in (Linux, z/VM, etc) and is observed via firmware/service events. This is a privileged s390x instruction that must be intercepted by SIE. Userspace handles the instruction as well as migration. Data is communicated via VCPU register synchronization. The Control Program Name Code (CPNC) is stored in the SIE block. The CPNC along with the Control Program Version Code (CPVC) are stored in the kvm_vcpu_arch struct. This data is reset on load normal and clear resets. Signed-off-by: Collin Walling <walling@linux.ibm.com> Reviewed-by: Janosch Frank <frankja@linux.ibm.com> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: David Hildenbrand <david@redhat.com> Link: https://lore.kernel.org/r/20200622154636.5499-3-walling@linux.ibm.com [borntraeger@de.ibm.com: fix sync_reg position] Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
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Christian Borntraeger

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@@ -1031,6 +1031,7 @@ struct kvm_ppc_resize_hpt {
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#define KVM_CAP_PPC_SECURE_GUEST 181
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#define KVM_CAP_HALT_POLL 182
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#define KVM_CAP_ASYNC_PF_INT 183
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#define KVM_CAP_S390_DIAG318 184
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#ifdef KVM_CAP_IRQ_ROUTING
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