Re: [Qemu-devel] [PATCH 0/6] fix w32 sockets

[Stefan Weil]

Am 20.03.2012 10:49, schrieb Paolo Bonzini:
> The w32 main loop has been mostly broken by the introduction of the
> glib main loop. glib's g_poll does not use sockets on w32, so we
> need a separate approach.
>
> Patch 1 is a simple cleanup that is needed later in the series.
>
> Patch 2 and patch 3 completely separate the way the main loop waits
> on POSIX and w32 systems, and drop glib source handling from the w32
> main loop.
>
> Patch 4 fixes a longstanding bug in how sockets are handled, also
> simplifying the code in the process. On top of this simplification,
> patch 5 starts using g_poll in the w32 main loop and patch 6 adds
> back glib source handling.
>
> I didn't test this in the conditions explained in bug 916720, but I
> tested both a TCP monitor and an stdio monitor and both work (under
> Wine that is).
>
> Stefan, can you please take care of shepherding the patches in
> (pinging etc.)?

Hi Paolo,

it's really great that you addressed this main loop issue.

I tried to run an ARM system emulation for Raspberry Pi recently
and had much problems because QEMU was freezing very soon.

My host is Windows 7 (64 bit) running 32 and 64 bit versions
of QEMU with SDL. See https://bugs.launchpad.net/qemu/+bug/954099
for the command line and images.

A few seconds after start, QEMU freezes when I select screen 1 ("vga")
with the mouse (no more screen updates, no reaction on keyboard
input or window events).

If a switch to screen 3 (serial console 1) very fast after, I get
the message that the Linux kernel is uncompressed. It is also possible
to switch to screen 1 and watch the kernel boot messages, but it
freezes later.

Your patch series does not fix this, although I had expected that
it would, because I already noticed the problem with select. :-(

So we still have a problem to find.

Regards,

Stefan