linux-kernel - Re: [PATCH RFC] kvm: x86: add halt

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Message-ID: <54D47229.9020501@redhat.com>
Date:	Fri, 06 Feb 2015 08:50:01 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Marcelo Tosatti <mtosatti@...hat.com>
CC:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org, riel@...hat.com,
	rkrcmar@...hat.com
Subject: Re: [PATCH RFC] kvm: x86: add halt_poll module parameter



On 06/02/2015 00:34, Marcelo Tosatti wrote:
> You want at least a basic procedure to estimate a value
> (its a function of the device after all).

I will add a tracepoint.

> Rather than halt_successful_poll's, i suppose the optimum 
> can be estimated from a dataset containing entries
> in the form:
> 
> interrupt time - hlt time
> 
> Then choose a given value from that table.

Yes.

Paolo
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