From mboxrd@z Thu Jan  1 00:00:00 1970
From: Corneliu ZUZU <czuzu@bitdefender.com>
Subject: Re: [PATCH v3 2/2] xen/vm-events: Move parts of
 monitor_domctl code to common-side.
Date: Mon, 15 Feb 2016 10:46:38 +0200
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Cc: Tamas K Lengyel <tamas@tklengyel.com>, Keir Fraser <keir@xen.org>, Ian Campbell <ian.campbell@citrix.com>, Razvan Cojocaru <rcojocaru@bitdefender.com>, Andrew Cooper <andrew.cooper3@citrix.com>, Stefano Stabellini <stefano.stabellini@citrix.com>, Jan Beulich <jbeulich@suse.com>
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On 2/15/2016 8:37 AM, Corneliu ZUZU wrote:
> diff --git a/xen/common/monitor.c b/xen/common/monitor.c
> new file mode 100644
> index 0000000..b708cab
> --- /dev/null
> +++ b/xen/common/monitor.c
> +    int rc;
> +    bool_t requested_status = 0;
> +
> +    if ( unlikely(current->domain == d) ) /* no domain_pause() */
> +        return -EPERM;
> +
> +    rc = xsm_vm_event_control(XSM_PRIV, d, mop->op, mop->event);
> +    if ( unlikely(rc) )
> +        return rc;
> +
> +    switch ( mop->op )
> +    {
> +    case XEN_DOMCTL_MONITOR_OP_ENABLE:
> +        requested_status = 1;
> +        /* fallthrough */
> +    case XEN_DOMCTL_MONITOR_OP_DISABLE:
> +        /* Check if event type is available. */
> +        if ( unlikely(!(arch_monitor_get_capabilities(d) & (1 << mop->event))) )
> +            return -EOPNOTSUPP;
> +        /* Arch-side handles enable/disable ops. */
> +        return arch_monitor_domctl_event(d, mop);
>

Only noticed now, requested_status now became unused in this function.
Will remove in v4.

Corneliu.