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Re: [Qemu-devel] [PATCH 0/2] Introduce panic hypercall

From: Avi Kivity
Subject: Re: [Qemu-devel] [PATCH 0/2] Introduce panic hypercall
Date: Tue, 21 Jun 2011 11:09:21 +0300
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.17) Gecko/20110428 Fedora/3.1.10-1.fc15 Thunderbird/3.1.10 
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. 

--
error compiling committee.c: too many arguments to function
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