Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2020-07-15-1' into staging

Merge tpm 2020/07/15 v1

# gpg: Signature made Wed 15 Jul 2020 20:16:21 BST
# gpg:                using RSA key B818B9CADF9089C2D5CEC66B75AD65802A0B4211
# gpg: Good signature from "Stefan Berger <stefanb@linux.vnet.ibm.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: B818 B9CA DF90 89C2 D5CE  C66B 75AD 6580 2A0B 4211

* remotes/stefanberger/tags/pull-tpm-2020-07-15-1:
  tests: tpm: Skip over pcrUpdateCounter byte in result comparison
  tpm: tpm_spapr: Exit on TPM backend failures

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

2 files changed, 9 insertions, 2 deletions

diff --git a/hw/tpm/tpm_spapr.c b/hw/tpm/tpm_spapr.c
index cb4dfd1e6a..8288ab0a15 100644
--- a/hw/tpm/tpm_spapr.c
+++ b/hw/tpm/tpm_spapr.c
@@ -306,7 +306,10 @@ static void tpm_spapr_reset(SpaprVioDevice *dev)
                             TPM_SPAPR_BUFFER_MAX);
 
     tpm_backend_reset(s->be_driver);
-    tpm_spapr_do_startup_tpm(s, s->be_buffer_size);
+
+    if (tpm_spapr_do_startup_tpm(s, s->be_buffer_size) < 0) {
+        exit(1);
+    }
 }
 
 static enum TPMVersion tpm_spapr_get_version(TPMIf *ti)
diff --git a/tests/qtest/tpm-util.c b/tests/qtest/tpm-util.c
index 34efae8f18..58a9593745 100644
--- a/tests/qtest/tpm-util.c
+++ b/tests/qtest/tpm-util.c
@@ -139,7 +139,11 @@ void tpm_util_pcrread(QTestState *s, tx_func *tx,
 
     tx(s, tpm_pcrread, sizeof(tpm_pcrread), buffer, sizeof(buffer));
 
-    g_assert_cmpmem(buffer, exp_resp_size, exp_resp, exp_resp_size);
+    /* skip pcrUpdateCounter (14th byte) in comparison */
+    g_assert(exp_resp_size >= 15);
+    g_assert_cmpmem(buffer, 13, exp_resp, 13);
+    g_assert_cmpmem(&buffer[14], exp_resp_size - 14,
+                    &exp_resp[14], exp_resp_size - 14);
 }
 
 bool tpm_util_swtpm_has_tpm2(void)