linux-kernel - Re: [PATCH 3/4 V7] Add ioctl for KVMCLOCK_GUEST

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Message-ID: <4EF30136.2060100@redhat.com>
Date:	Thu, 22 Dec 2011 12:06:46 +0200
From:	Avi Kivity <avi@...hat.com>
To:	Eric B Munson <emunson@...bm.net>
CC:	mingo@...hat.com, hpa@...or.com, arnd@...db.de,
	ryanh@...ux.vnet.ibm.com, aliguori@...ibm.com, mtosatti@...hat.com,
	jeremy.fitzhardinge@...rix.com, kvm@...r.kernel.org,
	linux-arch@...r.kernel.org, x86@...nel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4 V7] Add ioctl for KVMCLOCK_GUEST_STOPPED

On 12/15/2011 09:42 PM, Eric B Munson wrote:
> Now that we have a flag that will tell the guest it was suspended, create an
> interface for that communication using a KVM ioctl.
>  
> +4.64 KVMCLOCK_GUEST_PAUSED
> +
> +Capability: basic
> +Architechtures: Any that implement pvclocks (currently x86 only)
> +Type: vcpu ioctl
> +Parameters: None
> +Returns: 0 on success, -1 on error
> +
> +This signals to the host kernel that the specified guest is being paused by
> +userspace.  The host will set a flag in the pvclock structure that is checked
> +from the soft lockup watchdog.
> +

This can be called during unpause, yes? The documentation should reflect
that.  I'm thinking of the SIGCONT handler here.

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

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