[PATCH v2 0/1] KVM: selftests: SEV: Sanity check the launch measurement

[Hemanth Selam <hemanth.selam@gmail.com>]

This replaces the TODO in test_sev() with a sanity check of the launch
measurement returned by KVM_SEV_LAUNCH_MEASURE.  A full attestation-style
validation isn't possible from the selftest because userspace does not
possess the transport keys the PSP uses to derive the measurement.  The
check therefore verifies the firmware-reported blob length and that the
measurement and the nonce are non-zero, with the blob layout described by
a struct so the buffer and field sizes derive from a single definition.

No functional changes from v1; this posting only adds a cover letter.

v1: https://lore.kernel.org/all/20260807121308.1885737-1-hemanth.selam@gmail.com/

Hemanth Selam (1):
  KVM: selftests: SEV: Sanity check the launch measurement

 tools/testing/selftests/kvm/include/x86/sev.h | 12 +++++++
 tools/testing/selftests/kvm/lib/x86/sev.c     | 11 +++++--
 .../selftests/kvm/x86/sev_smoke_test.c        | 33 +++++++++++++++++--
 3 files changed, 52 insertions(+), 4 deletions(-)

-- 
2.43.7