trap signals for "-serial mon:stdio"
With mon:stdio you can exit the VM by switching to the monitor and sending the "quit" command. It is then useful to pass Ctrl-C to the VM instead of exiting. This in turn lets us stop tying the default signal handling behavior to -nographic, removing gratuitous differences between "-display none" and "-nographic". This patch changes behavior for "-display none -serial mon:stdio", as expected, but not for "-display none -serial stdio". Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com> Signed-off-by: NMichael Tokarev <mjt@tls.msk.ru> Reviewed-by: NPeter Maydell <peter.maydell@linaro.org> Message-id: 1372868986-25988-1-git-send-email-mjt@msgid.tls.msk.ru Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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