linux-kernel - Re: [PATCH 2/2] kvm: exit to userspace with reason KVM_EXIT_VCPU

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Message-ID: <4ED212C7.1080901@redhat.com>
Date:	Sun, 27 Nov 2011 12:36:55 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Liu Ping Fan <kernelfans@...il.com>
CC:	kvm@...r.kernel.org, qemu-devel@...gnu.org,
	linux-kernel@...r.kernel.org, aliguori@...ibm.com,
	jan.kiszka@....de, ryanh@...ibm.com
Subject: Re: [PATCH 2/2] kvm: exit to userspace with reason KVM_EXIT_VCPU_DEAD

On 11/27/2011 04:42 AM, Liu Ping Fan wrote:
> From: Liu Ping Fan <pingfank@...ux.vnet.ibm.com>
>
> The vcpu can be safely released when
> --1.guest tells us that the vcpu is not needed any longer.
> --2.vcpu hits the last instruction _halt_
>
> If both of the conditions are satisfied, kvm exits to userspace
> with the reason vcpu dead. So the user thread can exit safely.
>
>

Seems to be completely unnecessary.  If you want to exit from the vcpu
thread, send it a signal.

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

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