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Date: Sat, 19 Nov 2016 20:35:49 +0100
From: Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>
To: Ignacio Alvarado <ikalvarado@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>,
        "H. Peter Anvin" <hpa@zytor.com>, kvm@vger.kernel.org,
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        stable <stable@vger.kernel.org>
Subject: Re: [PATCH v2] KVM: Disable irq while unregistering user notifier
Message-ID: <20161119193548.GH26213@potion>
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2016-11-17 13:42+0100, Paolo Bonzini:
> On 04/11/2016 20:15, Ignacio Alvarado wrote:
>> Function user_notifier_unregister should be called only once for each
>> registered user notifier.
>> 
>> Function kvm_arch_hardware_disable can be executed from an IPI context
>> which could cause a race condition with a VCPU returning to user mode
>> and attempting to unregister the notifier.
>> 
>> Signed-off-by: Ignacio Alvarado <ikalvarado@google.com>
> 
> Cc: stable@vger.kernel.org
> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

Applied to kvm/master, thanks.