On 06/21/2011 09:02 AM, Gleb Natapov wrote:
On Mon, Jun 20, 2011 at 07:34:57PM +0300, Avi Kivity wrote: > >The only two things which came to my mind are: > > > > * NMI (aka. ipmitool diag) - already available in qemu/kvm - but requires > > in-guest kexec/kdump > > * Hardware-Watchdog (also available in qemu/libvirt) > > A watchdog has the advantage that is also detects lockups. > And has disadvantage that all time base heuristics are bite us in the end.
The perf-based watchdog counts clocks-not-halted, not time, so it is safe from time issues. We could make the hardware watchdog cheat in the same way.
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