tpm-emulator: add a FIXME comment about blocking cancel

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>

diff --git a/hw/tpm/tpm_emulator.c b/hw/tpm/tpm_emulator.c
index 94e6660a5a8a06a31f8e0913d193667c6dc573b3..24cb61162fefc181f8bf7a6785caa6542eca358d 100644 (file)
--- a/hw/tpm/tpm_emulator.c
+++ b/hw/tpm/tpm_emulator.c
@@ -338,6 +338,7 @@ static void tpm_emulator_cancel_cmd(TPMBackend *tb)
         return;
     }
 
+    /* FIXME: make the function non-blocking, or it may block a VCPU */
     if (tpm_emulator_ctrlcmd(tpm_emu, CMD_CANCEL_TPM_CMD, &res, 0,
                              sizeof(res)) < 0) {
         error_report("tpm-emulator: Could not cancel command: %s",