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xen-devel
RE: [Xen-devel] Re: Getting rid of xenbus_suspend(): tpmfrontdriverimpac
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To: |
"Tian, Kevin" <kevin.tian@xxxxxxxxx>, "Keir Fraser" <Keir.Fraser@xxxxxxxxxxxx>, "Stefan Berger" <stefanb@xxxxxxxxxx> |
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Subject: |
RE: [Xen-devel] Re: Getting rid of xenbus_suspend(): tpmfrontdriverimpacted? |
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From: |
"Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx> |
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Date: |
Mon, 6 Nov 2006 08:51:09 -0000 |
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Cc: |
xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Zhai, Edwin" <edwin.zhai@xxxxxxxxx>, xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |
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Mon, 06 Nov 2006 06:25:22 -0800 |
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Thread-topic: |
[Xen-devel] Re: Getting rid of xenbus_suspend(): tpmfrontdriverimpacted? |
> > bit cheesy as far as I can see, so something more integrated in the
> > tpmfront/back protocol would be nice.
>
> In terms of time needed for migration there won't be a difference. Is
> supporting that .suspend really so problematic?
Can't you implement the 'exactly-once' semantics you want using some
higher-level protocol?
The suspend hook clearly can't be called in the case of restarting a driver
domain. Maybe you don't ever want to do this with tpm, but we do with all the
other backends.
Ian
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