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The current default action of pausing a guest after a panic event is received leaves the responsibility to resume guest execution to the management layer. The reasons for this behavior are discussed here: https://lore.kernel.org/qemu-devel/52148F88.5000509@redhat.com/ However, in instances like the case of older guests (Linux and Windows) using a pvpanic device but missing support for the PVPANIC_CRASHLOADED event, and Windows guests using the hv-crash enlightenment, it is desirable to allow the guests to continue running after sending a PVPANIC_PANICKED event. This allows such guests to proceed to capture a crash dump and automatically reboot without intervention of a management layer. Add an option to avoid stopping a VM after a panic event is received, by passing: -action panic=none in the command line arguments, or during runtime by using an upcoming QMP command. Suggested-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com> Message-Id: <1607705564-26264-3-git-send-email-alejandro.j.jimenez@oracle.com> [Do not fix panic action in the variable, instead modify -no-shutdown. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> |
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