[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] [PATCH V13 0/7] Qemu Trusted Platform Module (TPM) integrat

From: Stefan Berger
Subject: [Qemu-devel] [PATCH V13 0/7] Qemu Trusted Platform Module (TPM) integration
Date: Mon, 12 Dec 2011 14:12:09 -0500

The following series of patches adds TPM (Trusted Platform Module) support
to Qemu. An emulator for the TIS (TPM Interface Spec) interface is
added that provides the basis for accessing a 'backend' implementing the actual
TPM functionality. The TIS emulator serves as a 'frontend' enabling for
example Linux's TPM TIS (tpm_tis) driver.

In this series I am posting a backend implementation that makes use of the
host's TPM through a passthrough driver, which on Linux is accessed
using /dev/tpm0.

 - applies to checkout of 61a5872 (Dec 12)
 - only allowing character devices as fd parameter
 - fixing error path in tpm_tis_init

 - applies to checkout of ebffe2a (Oct 11)
 - added documentation for fd parameter
 - nits

 - applies to checkout of 46f3069 (Sep 28)
 - some filing on the documentation
 - small nits fixed

 - applies to checkout of 1ce9ce6 (Sep 27)
 - addressed Michael Tsirkin's comments on v9

 - addressed Michael Tsirkin's and other reviewers' comments
 - only posting Andreas Niederl's passthrough driver as the backend driver

 - applies to checkout of f0fb8b7 (Aug 30)
 - fixing compilation error pointed out by Andreas Niederl
 - adding patch that allows to feed an initial state into the libtpms TPM
 - following memory API changes (glib) where necessary

 - applies to checkout of b9c6cbf (Aug 9)
 - measuring the modules if multiboot is used
 - coding style fixes

 - applies to checkout of 75ef849 (July 2nd)
 - some fixes and improvements to existing patches; see individual patches
 - added a patch with a null driver responding to all TPM requests with
   a response indicating failure; this backend has no dependencies and
   can alwayy be built;
 - added a patch to support the hashing of kernel, ramfs and command line
   if those were passed to Qemu using -kernel, -initrd and -append
   respectively. Measurements are taken, logged, and passed to SeaBIOS using
   the firmware interface.
 - libtpms revision 7 now requires 83kb of block storage due to having more
   NVRAM space

 - applies to checkout of 1fddfba1
 - adding support for split command line using the -tpmdev ... -device ...
   options while keeping the -tpm option
 - support for querying the device models using -tpm model=?
 - support for monitor 'info tpm'
 - adding documentation of command line options for man page and web page
 - increasing room for ACPI tables that qemu reserves to 128kb (from 64kb)
 - adding (experimental) support for block migration
 - adding (experimental) support for taking measurements when kernel,
   initrd and kernel command line are directly passed to Qemu

 - applies to checkout of d2d979c6
 - more coding style fixes
 - adding patch for supporting blob encryption (in addition to the existing
   QCoW2-level encryption)
   - this allows for graceful termination of a migration if the target
     is detected to have a wrong key
   - tested with big and little endian hosts
 - main thread releases mutex while checking for work to do on behalf of
 - introducing file locking (fcntl) on the block layer for serializing access
   to shared (QCoW2) files (used during migration)

 - Building a null driver at patch 5/8 that responds to all requests
   with an error response; subsequently this driver is transformed to the
   libtpms-based driver for real TPM functionality
 - Reworked the threading; dropped the patch for qemu_thread_join; the
   main thread synchronizing with the TPM thread termination may need
   to write data to the block storage while waiting for the thread to 
   terminate; did not previously show a problem but is safer
 - A lot of testing based on recent git checkout 4b4a72e5 (4/10):
   - migration of i686 VM from x86_64 host to i686 host to ppc64 host while
     running tests inside the VM
   - tests with S3 suspend/resume
   - tests with snapshots
   - multiple-hour tests with VM suspend/resume (using virsh save/restore)
     while running a TPM test suite inside the VM
   All tests passed; [not all of them were done on the ppc64 host]

 - splitting some of the patches into smaller ones for easier review
 - fixes in individual patches


Stefan Berger (7):
  Support for TPM command line options
  Add TPM (frontend) hardware interface (TPM TIS) to Qemu
  Add a debug register
  Build the TPM frontend code
  Add a TPM Passthrough backend driver implementation
  Introduce --enable-tpm-passthrough configure option
  Add fd parameter for TPM passthrough driver

 Makefile.target      |    2 +
 configure            |   28 ++
 hmp-commands.hx      |    2 +
 hw/tpm_passthrough.c |  512 +++++++++++++++++++++++++++++
 hw/tpm_tis.c         |  891 ++++++++++++++++++++++++++++++++++++++++++++++++++
 hw/tpm_tis.h         |   91 +++++
 monitor.c            |   10 +
 qemu-config.c        |   25 ++
 qemu-options.hx      |   71 ++++
 tpm.c                |  190 +++++++++++
 tpm.h                |  124 +++++++
 vl.c                 |   15 +
 12 files changed, 1961 insertions(+), 0 deletions(-)
 create mode 100644 hw/tpm_passthrough.c
 create mode 100644 hw/tpm_tis.c
 create mode 100644 hw/tpm_tis.h
 create mode 100644 tpm.c
 create mode 100644 tpm.h


reply via email to

[Prev in Thread] Current Thread [Next in Thread]