[Qemu-devel] Removing indeterminism in qemu execution

[Zeus Gómez Marmolejo]

Hi developers,

I'm debugging an operating system with QEMU and I have a race condition in the OS. The problem is that each time I run QEMU I get this error in a different place, so it makes impossible for gdb to debug it. My plan is to remove this indeterminism and be able to reproduce the same error in the same place every time. To do that:

* The test is automated (there is no user IO)

* I've passed the options "-rtc base=2006-06-17,clock=vm,driftfix=none -icount 2" to QEMU

* There is no use of KVM (the modules have been removed from the kernel)

So even with that, in each execution I get a different error every time. Do you have any suggestions to make the execution identical each time is being run?

Many thanks!!

--
Zeus Gómez Marmolejo
Zet - The x86 (IA-32) open implementation
http://zet.aluzina.org