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Re: [Qemu-devel] [PATCH] QMP: TPM QMP and man page documentation updates


From: Stefan Berger
Subject: Re: [Qemu-devel] [PATCH] QMP: TPM QMP and man page documentation updates
Date: Mon, 18 Mar 2013 13:46:56 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:15.0) Gecko/20120911 Thunderbird/15.0.1

On 03/18/2013 12:16 PM, Markus Armbruster wrote:
Corey Bryant <address@hidden> writes:

Signed-off-by: Corey Bryant <address@hidden>
---
  qemu-options.hx |  3 ++-
  qmp-commands.hx | 59 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  2 files changed, 61 insertions(+), 1 deletion(-)

diff --git a/qemu-options.hx b/qemu-options.hx
index 30fb85d..3b3cd0f 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -2237,7 +2237,8 @@ Backend type must be:
  @option{passthrough}.
The specific backend type will determine the applicable options.
-The @code{-tpmdev} option requires a @code{-device} option.
+The @code{-tpmdev} option creates the TPM backend and requires a
address@hidden option that specifies the TPM frontend interface model.
Options to each backend are described below. diff --git a/qmp-commands.hx b/qmp-commands.hx
index b370060..4eda5ea 100644
--- a/qmp-commands.hx
+++ b/qmp-commands.hx
@@ -2721,18 +2721,77 @@ EQMP
          .mhandler.cmd_new = qmp_marshal_input_query_tpm,
      },
+SQMP
+query-tpm
+---------
+
+Return information about the TPM device.
+
+Arguments: None
+
+Example:
+
+-> { "execute": "query-tpm" }
+<- { "return":
+     [
+       { "model": "tpm-tis",
+         "tpm-options":
+           { "type": "tpm-passthrough-options",
+             "data":
+               { "cancel-path": "/sys/class/misc/tpm0/device/cancel",
+                 "path": "/dev/tpm0"
+               }
+           },
+         "type": "passthrough",
+         "id": "tpm0"
+       }
+     ]
+   }
+
+EQMP
+
"tpm-options" is a discriminated union.  How is its discriminator "type"
(here: "tpm-passthrough-options") related to the outer "type" (here:
"passthrough")?

It gives you similar information twice. So there is a direct relationship between the two types.




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