Re: [Qemu-devel] [PATCH V2 4/9] Add tpm_tis driver to build process

[Blue Swirl]

On Tue, Apr 5, 2011 at 5:08 AM, Stefan Berger
<address@hidden> wrote:
> On 04/03/2011 05:20 AM, Blue Swirl wrote:
>>
>> On Fri, Apr 1, 2011 at 10:57 PM, Stefan Berger
>> <address@hidden>  wrote:
>>>
>>> On 04/01/2011 02:14 PM, Blue Swirl wrote:
>>>
>>> At this point there is no compile test needed since all code is 'there'.
>>> It's merely adding the front-end,i.e., the TPM TIS emulation to be
>>> compiled.
>>
>> If the basic device (without the tpms-devel library) can be built on
>> any OS, the flag should go to default-configs/*86*-softmmu.mak.
>>
> It can be built on any OS, but it is of no use since the backend (libtpms)
> is only available on Linux and we don't support it on another OS. Unless
> someone else wants to port it to other OSes, I'd say that the test for Linux
> is useful.
> I'd actually also only compile the TIS if libtpms could be found, and
> terminate with an error message otherwise. I would add this restriction only
> in the last patch, so that in patch 4 at least for now the TIS can be built.
> Does that sound reasonable?

It should be possible to emulate the device (to some degree) without
relying on backend. See for example the recently committed smart card
device.