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From: Wei Liu <wei.liu2@citrix.com>
To: Andrea Genuise <and.genuise@gmail.com>
Cc: dgdegra@tycho.nsa.gov, Wei Liu <wei.liu2@citrix.com>,
	quan.xu@intel.com, xen-devel@lists.xen.org
Subject: Re: vTPM detaching issue
Date: Wed, 15 Jun 2016 12:48:54 +0100	[thread overview]
Message-ID: <20160615114854.GB28116@citrix.com> (raw)
In-Reply-To: <575FDD33.60704@gmail.com>

On Tue, Jun 14, 2016 at 12:32:19PM +0200, Andrea Genuise wrote:
[...]
> libxl: debug: libxl_aoutils.c:88:xswait_timeout_callback: backend
> /local/domain/748/backend/vtpm/749/0/state (hoping for state change to 6):
> xswait timeout (path=/local/domain/748/backend/vtpm/749/0/state)
> libxl: debug: libxl_event.c:677:libxl__ev_xswatch_deregister: watch
> w=0x1c4c1f0 wpath=/local/domain/748/backend/vtpm/749/0/state token=3/0:
> deregister slotnum=3
> libxl: debug: libxl_event.c:867:devstate_callback: backend
> /local/domain/748/backend/vtpm/749/0/state wanted state 6  timed out

This. The toolstack is waiting for the state to change to 6. But that
never happened.

> libxl: debug: libxl_event.c:691:libxl__ev_xswatch_deregister: watch
> w=0x1c4c1f0: deregister unregistered
> libxl: debug: libxl_device.c:937:device_backend_callback: calling
> device_backend_cleanup
> libxl: debug: libxl_event.c:691:libxl__ev_xswatch_deregister: watch
> w=0x1c4c1f0: deregister unregistered
> libxl: debug: libxl_device.c:943:device_backend_callback: Timeout reached,
> initiating forced remove

I think this is due to interaction between frontend and backend, but I'm
not an expert on vtpm so I don't have further comment.

Wei.

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  reply	other threads:[~2016-06-15 11:48 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-13 15:10 Andrea Genuise
2016-06-14  8:29 ` Xu, Quan
2016-06-14  9:15 ` Wei Liu
2016-06-14 10:32   ` Andrea Genuise
2016-06-15 11:48     ` Wei Liu [this message]
2016-06-29  7:51       ` FW: " Xu, Quan
2016-06-29 15:28         ` Daniel De Graaf

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