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From: "Jan Beulich" <JBeulich@suse.com>
To: Razvan Cojocaru <rcojocaru@bitdefender.com>
Cc: xen-devel@lists.xenproject.org
Subject: Re: Pausing / unpausing a single domain VCPU via libxc
Date: Thu, 26 Jan 2017 08:53:30 -0700	[thread overview]
Message-ID: <588A298A02000078001344B9@prv-mh.provo.novell.com> (raw)
In-Reply-To: <a00c455c-7706-ef92-0d17-33a05712cf77@bitdefender.com>

>>> On 26.01.17 at 13:08, <rcojocaru@bitdefender.com> wrote:
> I see that there's currently no xc_vcpu_pause() (there's only
> xc_domain_pause(), which freezes all the VCPUs), but there's
> XEN_DOMCTL_gdbsx_pausevcpu, which is only used by
> tools/debugger/gdbsx/xg/xg_main.c.
> 
> Wouldn't it make sense to have a "regular" DOMCTL in libxc that the
> debugger, as well as other clients, would make use of (said
> xc_vcpu_pause() / xc_vcpu_unpause())?

I could imagine the main reason for it to not exist being that using
it may confuse the guest (seeing one or more of its vCPU-s no
longer respond for some arbitrary time period).

Jan


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      parent reply	other threads:[~2017-01-26 15:53 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-26 12:08 Pausing / unpausing a single domain VCPU via libxc Razvan Cojocaru
2017-01-26 15:14 ` Dario Faggioli
2017-01-26 15:42   ` Razvan Cojocaru
2017-01-26 16:00     ` Dario Faggioli
2017-01-26 16:03       ` Razvan Cojocaru
2017-01-26 15:53 ` Jan Beulich [this message]

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