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eac53ac598
Manually having to use cpu_synchronize_state() is error prone. And as Christian Borntraeger discovered, e.g. handle_diag() is currently missing a cpu_synchronize_state(), as decode_basedisp_s() uses a general purpose register value internally. So let's do an overall cpu_synchronize_state(), which fixes at least the one mentioned BUG. We will clean up the superfluous cpu_synchronize_state() calls later. We now also call it (although maybe not neded) for - KVM_EXIT_S390_RESET -> s390_reipl_request() - KVM_EXIT_DEBUG -> kvm_arch_handle_debug_exit() - unmanagable/unimplemented intercepts - ICPT_CPU_STOP -> do_stop_interrupt() -> cpu gets halted - Scenarios where we inject an operation exception - handle_stsi() I don't think any of these are performance critical. Especially as we have all information directly contained in kvm_run, there are no additional IOCTLs to issue on modern kernels. Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20180406093552.13016-1-david@redhat.com> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com> |
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