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Re: [Xen-devel] [Qemu-devel] [PATCH] SeaBios/vTPM: Enable Xen stubdom vTPM for HVM virtual machine



On 03/23/2015 10:20 PM, Xu, Quan wrote:

-----Original Message-----
From: Stefan Berger [mailto:stefanb@xxxxxxxxxxxxxxxxxx]
Sent: Tuesday, March 24, 2015 4:01 AM
To: Xu, Quan; Ian Campbell
Cc: kevin@xxxxxxxxxxxx; qemu-devel@xxxxxxxxxx;
stefano.stabellini@xxxxxxxxxxxxx; xen-devel@xxxxxxxxxxxxx
Subject: Re: [Qemu-devel] [Xen-devel] [PATCH] SeaBios/vTPM: Enable Xen
stubdom vTPM for HVM virtual machine

On 03/23/2015 08:03 AM, Xu, Quan wrote:
-----Original Message-----
From: Stefan Berger [mailto:stefanb@xxxxxxxxxxxxxxxxxx]
Sent: Monday, March 23, 2015 6:57 PM
To: Xu, Quan; Ian Campbell
Cc: kevin@xxxxxxxxxxxx; xen-devel@xxxxxxxxxxxxx;
qemu-devel@xxxxxxxxxx; stefano.stabellini@xxxxxxxxxxxxx
Subject: Re: [Xen-devel] [PATCH] SeaBios/vTPM: Enable Xen stubdom
vTPM for HVM virtual machine

On 03/22/2015 09:47 PM, Xu, Quan wrote:
-----Original Message-----
From: Stefan Berger [mailto:stefanb@xxxxxxxxxxxxxxxxxx]
Sent: Friday, March 20, 2015 7:44 PM
To: Ian Campbell; Xu, Quan
Cc: kevin@xxxxxxxxxxxx; xen-devel@xxxxxxxxxxxxx;
qemu-devel@xxxxxxxxxx; stefano.stabellini@xxxxxxxxxxxxx
Subject: Re: [Xen-devel] [PATCH] SeaBios/vTPM: Enable Xen stubdom
vTPM for HVM virtual machine

On 03/19/2015 08:56 AM, Ian Campbell wrote:
On Tue, 2015-03-10 at 08:16 -0400, Quan Xu wrote:
@@ -151,6 +152,8 @@ device_hardware_setup(void)
         esp_scsi_setup();
         megasas_setup();
         pvscsi_setup();
+    if (runningOnXen())
+        vtpm4hvm_setup();
Is there anything which is actually Xen specific about the driver
in tpm.[ch]? Would it be better to just probe for it, perhaps
gates by a Kconfig option which enables TPM support.
I also think the probing should be done. That code can also be
recycled from what I posted earlier. It's gated by a Kconfig
option, so it doesn't
fill up the 128k ROM.
        Stefan

Agree, I will do it ASAP.
I reposted v9 of my series of patches. I will probably post v10 today.
Please try that one then since these patches should cover Xen, QEMU
(using a driver that only I can test at the moment), and to some
extent bare metal system.


      Stefan

Great!  Could you also archive v10 to your github?
then I can also test it and go through these source code.
I put it here now:

https://github.com/stefanberger/seabios-tpm

      Stefan
Thanks.
MS windows guest VM are maybe tricky issues. In my early-stage SeaBios patch,
I deal with TPM TCPA and SSDT in SeaBios, but MS windows guest VM is blue 
screens(Linux guest virtual machines are working).
It works when I deal with TPM TCPA and SSDT in hvmloader for Windows guest VM.

Can you be a bit more specific as to what gets it to work or which modifications you have to make in SeaBIOS to make it work?


   Stefan


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