linux-kernel - Re: async pf: INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected

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Message-ID: <4FA667D7.4040201@redhat.com>
Date:	Sun, 06 May 2012 15:00:23 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Gleb Natapov <gleb@...hat.com>
CC:	Sasha Levin <levinsasha928@...il.com>,
	Marcelo Tosatti <mtosatti@...hat.com>,
	"linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>,
	kvm@...r.kernel.org, Paul McKenney <paulmck@...ux.vnet.ibm.com>
Subject: Re: async pf: INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected

On 05/02/2012 03:04 PM, Gleb Natapov wrote:
> KVM: Do not take reference to mm during async #PF
>
> It turned to be totally unneeded. The reason the code was introduced is
> so that KVM can prefault swapped in page, but prefault can fail even
> if mm is pinned since page table can change anyway. KVM handles this
> situation correctly though and does not inject spurious page faults.
>
>

Applied to master for 3.4, thanks.

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

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