linux-kernel - Re: intel_pstate divide error with v3.13-rc4-256-gb7000ad

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Message-ID: <52C7C7EE.1070407@redhat.com>
Date:	Sat, 04 Jan 2014 09:35:58 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
CC:	Gleb Natapov <gleb@...nel.org>,
	Dirk Brandewie <dirk.brandewie@...il.com>,
	Kashyap Chamarthy <kchamart@...hat.com>,
	Josh Boyer <jwboyer@...oraproject.org>,
	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	"cpufreq@...r.kernel.org" <cpufreq@...r.kernel.org>,
	Linux PM list <linux-pm@...r.kernel.org>,
	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>,
	"Richard W.M. Jones" <rjones@...hat.com>
Subject: Re: intel_pstate divide error with v3.13-rc4-256-gb7000ad

Il 03/01/2014 23:46, Rafael J. Wysocki ha scritto:
> Well, fixing the KVM bug is surely welcome.
> 
> That said, adding checks to ensure that your assumptions are valid is rarely
> wrong, especially if they are done once per kernel boot.  And the kernel only
> should panic if it cannot continue to run, which isn't the case here.

I agree, but I suspect even your check is already late.  Your patch is
welcome but perhaps it should have a WARN_ON too.

Paolo
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