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Re: [Qemu-devel] [PATCH 2/3] tpm: Probe for connected TPM 1.2 or TPM 2
From: |
Eric Blake |
Subject: |
Re: [Qemu-devel] [PATCH 2/3] tpm: Probe for connected TPM 1.2 or TPM 2 |
Date: |
Mon, 13 Apr 2015 08:43:40 -0600 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
On 04/12/2015 02:59 PM, Stefan Berger wrote:
> On 04/07/2015 04:54 AM, Xu, Quan wrote:
>>
>> In my opinion, I prefer to point out tpm_version in QEMU command line
>> options, then
>> tpm_util_test_tpmdev() tries to verify it.
>
> The only reason why I am not doing this was that libvirt for example
> will need to probe for whether the additional parameter indicating the
> TPM version is supported. Besides that I thought it should be possible
> to probe on any platform and get a reliable result.
>
> Maybe Eric has a comment. I have recently seen a discussion where an
> additional parameter to an existing option was to be added, but cannot
> remember which option that was.
>
Hopefully, we are going to get introspection working for 2.4; at which
point, libvirt can use that to query what options are new to any other
command. Meanwhile, doesn't query-tpm-models already serve as a way to
query additions on this front?
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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