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xen-devel
Re: [Xen-devel] [PATCH][QEMU] Make active-timers thread-safe
After speaking with the original developer of this patch, it may have
been a mistake to port it forward from the 3.1 codebase.
This submission was premature.
We will do some investigation to see if this is still a problem in unstable.
Apologies,
Ben
Daniel P. Berrange wrote:
On Mon, Aug 27, 2007 at 02:58:26PM -0400, Ben Guthro wrote:
Protect active_timers[] lists with mutexes so timers can be safely used
from different threads.
What code in QEMU is actually still using threads ? There used to be a Xen
specific patch to the IDE layer to perform DMA ops in threads, but that was
removed when xen-unstable synced with QEMU 0.9.0. Not aware of anything
else using threads in the QEMU device model - its pretty dangerous because
QEMU's internal data structures basically all assume single-threaded access.
Regards,
Dan.
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