From mboxrd@z Thu Jan  1 00:00:00 1970
From: Razvan Cojocaru <rcojocaru@bitdefender.com>
Subject: Re: [PATCH 1/2] vm_event: sync domctl
Date: Wed, 23 Dec 2015 17:41:15 +0200
Message-ID: <567AC09B.2040403@bitdefender.com>
References: <1450882432-10484-1-git-send-email-tamas@tklengyel.com>
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To: Tamas K Lengyel <tamas@tklengyel.com>, xen-devel@lists.xenproject.org
Cc: Wei Liu <wei.liu2@citrix.com>, Ian Jackson <ian.jackson@eu.citrix.com>, Ian Campbell <ian.campbell@citrix.com>, Stefano Stabellini <stefano.stabellini@eu.citrix.com>
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On 12/23/2015 04:53 PM, Tamas K Lengyel wrote:
> Introduce new vm_event domctl option which allows an event subscriber
> to request all vCPUs not currently pending a vm_event request to be paused,
> thus allowing the subscriber to sync up on the state of the domain. This
> is especially useful when the subscribed wants to disable certain events
> from being delivered and wants to ensure no more requests are pending on the
> ring before doing so.
> 
> Cc: Ian Jackson <ian.jackson@eu.citrix.com>
> Cc: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
> Cc: Ian Campbell <ian.campbell@citrix.com>
> Cc: Wei Liu <wei.liu2@citrix.com>
> Cc: Razvan Cojocaru <rcojocaru@bitdefender.com>
> Signed-off-by: Tamas K Lengyel <tamas@tklengyel.com>

This certainly looks very interesting. Would xc_domain_pause() not be
enough for your use case then?


Thanks,
Razvan