On 01/04/2012 05:03 AM, Isaku Yamahata wrote: > Yes, it's quite doable in user space(qemu) with a kernel-enhancement. > And it would be easy to convert a separated daemon process into a thread > in qemu. > > I think it should be done out side of qemu process for some reasons. > (I just repeat same discussion at the KVM-forum because no one remembers > it) > > - ptrace (and its variant) > Some people want to investigate guest ram on host (qemu stopped or lively). > For example, enhance crash utility and it will attach qemu process and > debug guest kernel.
To debug the guest kernel you don't need to stop qemu itself. I agree it's a problem for qemu debugging though. > > - core dump > qemu process may core-dump. > As postmortem analysis, people want to investigate guest RAM. > Again enhance crash utility and it will read the core file and analyze > guest kernel. > When creating core, the qemu process is already dead. Yes, strong point. > It precludes the above possibilities to handle fault in qemu process. I agree. -- error compiling committee.c: too many arguments to function
