linux-kernel - Re: [PATCH] KVM: x86: Kick VCPU outside PIC lock again

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Message-ID: <4B84FCBB.8070702@redhat.com>
Date:	Wed, 24 Feb 2010 12:17:31 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Jan Kiszka <jan.kiszka@...mens.com>
CC:	Thomas Gleixner <tglx@...utronix.de>, KVM <kvm@...r.kernel.org>,
	Gleb Natapov <gleb@...hat.com>,
	RT <linux-rt-users@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] KVM: x86: Kick VCPU outside PIC lock again

On 02/24/2010 12:13 PM, Jan Kiszka wrote:
>
>    
>> I see.  Won't we hit the same issue when we call pic functions from
>> atomic context during the guest entry sequence?
>>
>>      
> If there are such call paths, for sure. What concrete path(s) do you
> have in mind?
>
>    

vcpu_enter_guest() -> inject_pending_event() -> 
kvm_cpu_{has,get}_interrupt() -> various pic functions if you're unlucky.

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

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