These patches are also available at: https://github.com/mdroth/qemu/commits/spapr-tpm-hcall-v0
This patchset implements the H_TPM_COMM hypercall, which provides a way for an Ultravisor to pass raw TPM commands on to a host's TPM device, either directly or through a TPM Resource Manager (needed to support multiple guests). Secure Guests running on an Ultravisor have a symmetric key that is encrypted using a public key that is bound to a trusted host's TPM hardware. This hypercall provides a means to decrypt the symmetric key on behalf of a Secure Guest using the host's TPM hardware. More details are provided in the spec summary introduced in patch 1. docs/specs/ppc-spapr-uv-hcalls.txt | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/ppc/Makefile.objs | 1 + hw/ppc/spapr.c | 27 +++++++++++++++++++++++++++ hw/ppc/spapr_hcall_tpm.c | 135 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/ppc/trace-events | 4 ++++ include/hw/ppc/spapr.h | 7 ++++++- 6 files changed, 247 insertions(+), 1 deletion(-)
