Xen project Mailing List

2013/9/24 Daniel De Graaf <dgdegra@xxxxxxxxxxxxx>

On 09/24/2013 01:20 PM, Mark Morrison wrote:

I have also a question regarding installation of vTPM manager.

Where does vtpmmgr-stubdom.gz (not the vtpmmgr-stubdom.img) come from? I cannot find it in (compiled) Xen directory or anywhere else.

Thanks.

stubdom/mini-os-x86_64-vtpmmgr/mini-os.gz; the source code is primarily in stubdom/vtpmmgr.

Date: Tue, 24 Sep 2013 12:52:10 -0400
From: dgdegra@xxxxxxxxxxxxx
To: epm@xxxxxxxxxxx
CC: xen-users@xxxxxxxxxxxxx
Subject: Re: [Xen-users] Problems with vTPM manager

On 09/24/2013 09:51 AM, Eduardo Peixoto Macedo wrote:

Hi,

I am following http://xenbits.xen.org/docs/unstable/misc/vtpm.txt, but
I'm having some problems when I try to start vtpmmgr-stubdom
I'm using Xen 4.3 on Ubuntu 12.04 and I have a physical TPM.

The config file for vTPM manager is:

kernel="/usr/local/lib/xen/boot/vtpmmgr-stubdom.gz"
memory=16
disk=["file:/var/vtpmmgr-stubdom.img,hda,w"]
name="vtpmmgr"
iomem=["fed40,5"]

And I get this output when I try xl create -c vtpmmgr-stubdom.cfg:

Parsing config from /home/xen_images/vtpmmgr-stubdom.cfg
Daemon running with PID 5048
Xen Minimal OS!
start_info: 0xa2000(VA)
nr_pages: 0x1000
shared_inf: 0x44e09000(MA)
pt_base: 0xa5000(VA)
nr_pt_frames: 0x5
mfn_list: 0x9a000(VA)
mod_start: 0x0(VA)
mod_len: 0
flags: 0x0
cmd_line:
stack: 0x597e0-0x797e0
MM: Init
_text: 0x0(VA)
_etext: 0x39357(VA)
_erodata: 0x45000(VA)
_edata: 0x47c40(VA)
stack start: 0x597e0(VA)
_end: 0x99e00(VA)
start_pfn: ad
max_pfn: 1000
Mapping memory range 0x400000 - 0x1000000
setting 0x0-0x45000 readonly
skipped 0x1000
MM: Initialise page allocator for b3000(b3000)-1000000(1000000)
MM: done
Demand map pfns at 1001000-2001001000.
Heap resides at 2001002000-4001002000.
Initialising timer interface
Initialising console ... done.
gnttab_table mapped at 0x1001000.
Initialising scheduler
Thread "Idle": pointer: 0x2001002050, stack: 0xd0000
Thread "xenstore": pointer: 0x2001002800, stack: 0xe0000
xenbus initialised on irq 1 mfn 0x5e26b
Thread "shutdown": pointer: 0x2001002fb0, stack: 0xf0000
Dummy main: start_info=0x798e0
Thread "main": pointer: 0x2001003760, stack: 0x100000
"main"
Shutting down ()
Shutdown requested: 3
Thread "shutdown" exited.
INFO[VTPM]: Starting vTPM manager domain
INFO[VTPM]: Option: Using tpm_tis driver
******************* BLKFRONT for device/vbd/768 **********

backend at /local/domain/0/backend/qdisk/4/768
Failed to read /local/domain/0/backend/qdisk/4/768/feature-barrier.
32768 sectors of 512 bytes
**************************
blk_open(device/vbd/768) -> 3
============= Init TPM BACK ================
Thread "tpmback-listener": pointer: 0x20010043f0, stack: 0xf0000
============= Init TPM TIS Driver ==============
IOMEM Machine Base Address: FED40000
Enabled Localities: 0
Map 1 (fed40, ...) at 0x1006000 failed: -1.
Do_exit called!
base is 0x10fcb8 caller is 0x1f24d
base is 0x10fcd8 caller is 0x27658
base is 0x10fd88 caller is 0x2772b
base is 0x10fde8 caller is 0x26bf6
base is 0x10fe28 caller is 0x26c1e
base is 0x10fe38 caller is 0x1ba94
base is 0x10fe78 caller is 0x6f84
base is 0x10ff38 caller is 0x353c
base is 0x10ff68 caller is 0x1fa80
base is 0x10ffe8 caller is 0x343b

Please, could you help me with this?

This is an issue that has been reported before, but at the time I thought
it was due to lack of a physical TPM and did not investigate further. This
is actually a bug introduced by the XSM changes in 4.3 which broke DOMID_IO
mappings with XSM disabled (or when using the dummy module). I will be
sending a patch fixing this to xen-devel; could you test it and verify that
it fixes this issue?

--
Daniel De Graaf
National Security Agency

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--
Daniel De Graaf
National Security Agency