Hi, Am 17.09.2013 13:37, schrieb Andriy Gapon: > > It seems that when qemu is run with accel=kvm:tcg then -d in_asm does not > produce anything. At least, with the qemu and kvm that I have access to.
Are you saying that with accel=kvm:tcg when falling back to TCG, -d in_asm does not work? For accel=kvm it's expected not to produce any output since QEMU does not process any Translation Blocks then. > Is there any way to obtain equivalent logging in such a configuration? > A note: a host and a guest are both amd64 (x86_64). Under Linux, trace options for the kvm kernel module can be enabled via the file system. Regards, Andreas > > Some background. I am trying to debug a problem with booting a FreeBSD VM. > If > acceleration is not used then the VM boots just fine. But with acceleration > the > boot process hangs somewhere in FreeBSD boot loader, judging from what I see > on > a screen. > I suspect that there could be a problem with jumping from real to protected > mode > or some such "exotic" environment. To narrow down the possibilities I would > like to examine execution trace and see where execution goes into the weeds. > > Thank you very much in advance. > -- SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
