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serial: Open non-block
authorDr. David Alan Gilbert <[email protected]>
Mon, 26 Feb 2018 13:04:52 +0000 (13:04 +0000)
committerPaolo Bonzini <[email protected]>
Mon, 2 Jul 2018 13:41:18 +0000 (15:41 +0200)
commit76b004d10da09bb77a4343edf7b98b2d662fb4f2
treeb5fa2752233f9445b8d9b3a369c16d347feaec7ctree | snapshot
parent66d26ddb235439c72ff2b5fc0b42e242a57ba315commit | diff
serial: Open non-block

On a real serial device, the open can block if the handshake
lines are in a particular state.  If a QEMU is passing the serial
device to the guest, the QEMU startup is blocked opening the device
(with a symptom seen as a timeout from libvirt).

Open the serial port with O_NONBLOCK.

Signed-off-by: Dr. David Alan Gilbert <[email protected]>
Signed-off-by: Paolo Bonzini <[email protected]>
chardev/char-serial.c diff | blob | blame | history
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