Mulyadi Santosa wrote: > Hi Gerhard... > > On Sun, Apr 11, 2010 at 20:52, Gerhard Wiesinger <li...@wiesinger.com> wrote: > > OK, uses the following ports: > > Port 0x20: 8259 interrupt controller > > Port 0x40: 8253 timer > > > > Interrupt 0x1A: > > ah=0x00: fetches system timer counters > > ah=0x02: reads the clock > > ah=0x04: fetches date > > > > So there must be something wrong with KVM with the above functionality (I > > guess the timers). > > Hmm, my silly guess is, maybe the timer is seen as decremented....or > at least "stuck". > > I have very little knowledge about git, but maybe you can start doing > git bisect to narrow which git commit that introduce such behaviour. > Meanwhile, let's wait for comments from one of the KVM developers.
There are various -no-kvm-XXX options to try: -no-kvm-irqchip disable KVM kernel mode PIC/IOAPIC/LAPIC -no-kvm-pit disable KVM kernel mode PIT -no-kvm-pit-reinjection disable KVM kernel mode PIT interrupt reinjection Any of them might be causing this problem. They disable in-kernel emulation of the interrupt controller and timer chips, and force the qemu version to be used. It's possible the in-kernel emulation is buggier than the qemu version. -- Jamie
