[Qemu-devel] [PATCH v5.1 for 2.13 0/4] tpm: Extend TPM with state migration support

[Stefan Berger <stefanb@linux.vnet.ibm.com>]

This series of patches implements support for migrating the state of the
external 'swtpm' TPM emulator as well as that of the TIS interface. 

For testing of TPM 2 (migration) please use the following git repos and
branches:

libtpms: 
   - repo: https://github.com/stefanberger/libtpms
   - branch: tpm2-preview.rev146.v2

swtpm:
   - repo: https://github.com/stefanberger/swtpm
   - branch: tpm2-preview.rev146.v2

Regards,
  Stefan

Changes:
 v4->v5:
   - followed Marc-André's and Alan's comments where possible; some comments
     were not addressed and reasons posted to mailing list
   - converted debug statements to tracing
   - qemu_chr_fe_read_all does not return errno, so displaying expected versus
     received number of bytes rather than strerror(errno)
   - added test cases
   - added documentation for migration to docs/spec/tpm.txt

 v3->v4:
   - dropped the size limit enforcement on blobs received from the swtpm
   - the .post_load migration function requires errno's to be returned.
     -> some of the functions have been converted to return a better errno



Stefan Berger (4):
  tpm: extend TPM emulator with state migration support
  tpm: extend TPM TIS with state migration support
  docs: tpm: add VM save/restore example and troubleshooting guide
  tpm: Add test cases that uses the external swtpm with CRB interface

 docs/specs/tpm.txt         | 106 +++++++++++++++
 hw/tpm/tpm_emulator.c      | 318 +++++++++++++++++++++++++++++++++++++++++++--
 hw/tpm/tpm_tis.c           |  52 +++++++-
 hw/tpm/trace-events        |   9 +-
 tests/Makefile.include     |   3 +
 tests/tpm-crb-swtpm-test.c | 244 ++++++++++++++++++++++++++++++++++
 tests/tpm-util.c           | 135 +++++++++++++++++++
 tests/tpm-util.h           |  36 +++++
 8 files changed, 889 insertions(+), 14 deletions(-)
 create mode 100644 tests/tpm-crb-swtpm-test.c
 create mode 100644 tests/tpm-util.c
 create mode 100644 tests/tpm-util.h

-- 
2.5.5