linux-kernel - Re: [patch] KVM: T60 resume fix

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Message-ID: <20070302113920.GB9367@mellanox.co.il>
Date:	Fri, 2 Mar 2007 13:39:20 +0200
From:	"Michael S. Tsirkin" <mst@...lanox.co.il>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jens Axboe <jens.axboe@...cle.com>,
	Pavel Machek <pavel@....cz>, Adrian Bunk <bunk@...sta.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>, linux-pm@...ts.osdl.org,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Daniel Walker <dwalker@...sta.com>,
	Len Brown <lenb@...nel.org>, git@...r.kernel.org,
	Avi Kivity <avi@...ranet.com>
Subject: Re: [patch] KVM: T60 resume fix

> Quoting Ingo Molnar <mingo@...e.hu>:
> Subject: [patch] KVM: T60 resume fix
> From: Ingo Molnar <mingo@...e.hu>
> 
> my T60 laptop does not resume correctly due to KVM attempting to send an 
> IPI to a CPU that might be down (or not up yet). (Doing so also triggers 
> the send_IPI_mask_bitmask() warning in arch/i386/kernel/smp.c, line 
> 732.)
> 
> with this fix applied my laptop does not hang during resume.
> 
> [ KVM will have to disable/enable virtualization on the CPU itself that
>   goes down / comes up, not via an IPI sent from the requesting CPU. ]
> 
> Signed-off-by: Ingo Molnar <mingo@...e.hu>

Since I don't normally have kvm loaded, this patch is unlikely
to help me, is that right?

-- 
MST
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