Anton Nefedov 1a29cc8f5e serial: chardev hotswap support ...

This allows to change the port's backend runtime, e.g. change it from
file to a socket making it possible to establish a debug session with
WinDbg

> qemu-system [..] -chardev file,id=charchannel2,path=/tmp/charchannel2 \
  -device isa-serial,chardev=charchannel2,id=channel2

QEMU 2.9.50 monitor - type 'help' for more information
(qemu) chardev-change charchannel2 \
  socket,host=127.0.0.1,port=4242,server,nowait

For a backend change, a number of ioctls has to be replayed to sync
the current setup of a frontend to a backend tty. This is hopefully
enough so we don't have to track, store and replay the whole original
control byte sequence.

Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <1499342940-56739-14-git-send-email-anton.nefedov@virtuozzo.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2017-07-14 11:04:34 +02:00

..

bcm2835_aux.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

cadence_uart.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

debugcon.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

digic-uart.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

escc.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

etraxfs_ser.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

exynos4210_uart.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

grlib_apbuart.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

imx_serial.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

ipoctal232.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

lm32_juart.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

lm32_uart.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

Makefile.objs

s390x/3270: Mark non-migratable and enable the device

2017-05-04 10:34:37 +02:00

mcf_uart.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

milkymist-uart.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

omap_uart.c

chardev: move headers to include/chardev

2017-06-02 11:33:52 +04:00

parallel.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

pl011.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

sclpconsole-lm.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

sclpconsole.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

serial-isa.c

char: rename CharDriverState Chardev

2017-01-27 18:07:59 +01:00

serial-pci.c

…

serial.c

serial: chardev hotswap support

2017-07-14 11:04:34 +02:00

sh_serial.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

spapr_vty.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

stm32f2xx_usart.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00

terminal3270.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

trace-events

…

virtio-console.c

virtio-console: chardev hotswap support

2017-07-14 11:04:34 +02:00

virtio-serial-bus.c

virtio-serial: fix segfault on disconnect

2017-06-02 18:57:17 +03:00

xen_console.c

char: avoid chardevice direct access

2017-07-14 11:04:33 +02:00

xilinx_uartlite.c

char: add backend hotswap handler

2017-07-14 11:04:33 +02:00