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Re: [Qemu-devel] glib mainloop breaks virtfs

From: Anthony Liguori
Subject: Re: [Qemu-devel] glib mainloop breaks virtfs
Date: Tue, 06 Sep 2011 09:31:32 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110516 Lightning/1.0b2 Thunderbird/3.1.10

On 09/06/2011 06:22 AM, Gerd Hoffmann wrote:

virtfs stopped working for me in master, the guest (fedora 15) just
hangs at boot when mounting the virtfs filesystems. Bisecting points to
this commit:

rincewind kraxel ~/projects/qemu ((69e5bb6...)|BISECTING)# git bisect good
4d88a2ac8643265108ef1fb47ceee5d7b28e19f2 is the first bad commit
commit 4d88a2ac8643265108ef1fb47ceee5d7b28e19f2
Author: Anthony Liguori <address@hidden>
Date: Mon Aug 22 08:12:53 2011 -0500

main: switch qemu_set_fd_handler to g_io_add_watch

The v9fs code uses qemu_set_fd_handler to trigger coroutines. I suspect this is not going to be a fun one to debug.

This changeset changes the ordering of when callbacks are fired so it may be triggering a latent bug in the coroutine usage in virtio-9p. Aneesh, can you take a look at it?


Anthony Liguori


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