linux-kernel - Re: regression - 2.6.36 -> 2.6.37 - kvm

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Message-ID: <20110306160328.GA29429@nik-comp.lan>
Date:	Sun, 6 Mar 2011 17:03:28 +0100
From:	Nikola Ciprich <extmaillist@...uxbox.cz>
To:	Zachary Amsden <zamsden@...hat.com>
Cc:	Glauber Costa <glommer@...hat.com>, Avi Kivity <avi@...hat.com>,
	Nikola Ciprich <nikola.ciprich@...uxbox.cz>,
	KVM list <kvm@...r.kernel.org>,
	Linux kernel list <linux-kernel@...r.kernel.org>
Subject: Re: regression - 2.6.36 -> 2.6.37 - kvm - 32bit SMP guests don't
	boot

> I did read your mail, but I was working on an old tree... because of  
> that transformation, this fix will unfortunately have to be back and  
> forward ported by hand.
OK, sorry, I didn't mean to be adverse...
>

> Did you try just that change right applied on top of the patch  
> (e48672fa25e879f7ae21785c7efd187738139593) implicated by bisect?
yes, with host running e48672fa25e879f7ae21785c7efd187738139593,
32bit SMP guest doesn't boot, when I add kvm_request_guest_time_update(vcpu),
it helps.

>
> It will be great to know if that change alone fixes the problem, if so,  
> the fix you propose is probably the right one for upstream.
ok, so shell I submit patch adding kvm_make_request(KVM_REQ_CLOCK_UPDATE, vcpu)?
this fixes things for me for 2.6.37.

>
> Thanks,
>
> Zach
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