[Qemu-devel] Re: [RESEND][PATCH] gdbstub: listen on ipv4 address

[Jan Kiszka <jan.kiszka@siemens.com>]

Anthony Liguori wrote:
> Sebastian Herbszt wrote:
>> Anthony Liguori wrote:
>>> Sebastian Herbszt wrote:
>>>> Make gdbstub listen on ipv4 address like before r5697.
>>>
>>> Any reason to make it explicit?
>>
>> There seems to be no support for IPv6 in gdb.
> 
> Are you unable to connect without the ipv4 option?  My understanding was
> that we shouldn't explicitly need this option.

inet_listen (which is finally called for this) falls back to PF_UNSPEC
when no protocol is given. I'm not sure if we can expect (according to
specs) that all our host OSes pick the protocol we want (normally IPv4).
But at least it worked so far, not only for gdb.

However, before hard-coding any protocol here, I would suggest to rework
the command line parameters. I mean: drop "-p port" and extend "-s" to
"-s [dev]" where "dev" falls back to
"tcp::1234,nowait,nodelay,server,ipv4" when omitted.

Jan

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