On Wed, Nov 09, 2011 at 08:00:06PM +0400, Cyrill Gorcunov wrote: ... > > > > You'll need CONFIG_KVM_CLOCK. > > > > I'm not actually sure how close our implementation is to having tsc > > working so far, Cyrill knows more about that than me. > > > > We dropped tsc while were debuggin timer interrupts and apic routing > setup, it might be not needed already. (Still to be fair I'm not sure > does kvm hypervisor has a control bit set for tsc and cause or not vm-exit). > > In short -- you could drop this from command line and tell us how it goes ;) > The history shows the following commit | commit 513fa5b4ccba8f9a2270a4f5262433071456540b | Author: Pekka Enberg <penberg@xxxxxxxxxxxxxx> | Date: Sun Apr 11 20:55:56 2010 +0300 | | kvm: Force 'notsc' and 'earlyprintk' kernel parameters | | We don't support TSC calibration properly and we want early printk so force | them as kernel parameters. | | Signed-off-by: Pekka Enberg <penberg@xxxxxxxxxxxxxx> and as far as I remember it's because we were stuck at apic calibration, but now we have an apic from kvm hypervisor so I think it's safe to drop it now (but still should be tested more widely). Cyrill -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
