在 2016年05月19日 21:45, mich...@walle.cc 写道:
Am 2016-05-19 13:32, schrieb Paolo Bonzini:
Michael, can you test patches 3 and 4?
Doesn't work for me:
$ qemu-system-lm32 -kernel serial.bin -serial vc -serial vc
Unexpected error in parse_chr() at
/home/mwalle/repos/qemu/hw/core/qdev-properties-system.c:149:
qemu-system-lm32: Property 'lm32-uart.chardev' can't take value
'serial0', it's in use
serial0 seems already be claimed. Please note that even
$ qemu-system-lm32 -kernel serial.bin
and
$ qemu-system-lm32
does not work.
"-serial .. -serial --" should still work, shouldn't it?
I've uploaded a small test binary to http://milkymist.walle.cc/tests/
which should prints 'A' and 'U' characters on the UARTs.
-michael
Hi, michael:
It seems that qemu_char_get_next_serial() call the qemu_chr_fe_claim,
which is also called by
qdev_prop_set_chr ! This cause chr->avail_connectinos less than 1. as
the error message said:
"it's in use".
A stright fix is to call the qemu_chr_fe_release after
qemu_char_get_next_serial and the call the
qdev_prop_set_chr, the error is gone! I have test with your test cases
and it works.
Or another way, can we modify qemu_char_get_next_serial and just skip
the call of qemu_chr_fe_claim?
