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List:       qemu-devel
Subject:    Re: [PATCH v10 0/2] tpm: add mssim backend
From:       Stefan Berger <stefanb () linux ! ibm ! com>
Date:       2024-04-30 21:02:10
Message-ID: 72bc9ea8-5492-425e-a797-f0139f369a4a () linux ! ibm ! com
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On 4/30/24 15:08, James Bottomley wrote:
> The requested feedback was to convert the tpmdev handler to being json
> based, which requires rethreading all the backends.  The good news is
> this reduced quite a bit of code (especially as I converted it to
> error_fatal handling as well, which removes the return status
> threading).  The bad news is I can't test any of the conversions.
> swtpm still isn't building on opensuse and, apparently, passthrough

It does build and packages are available:
- 
https://app.travis-ci.com/github/stefanberger/swtpm-distro-compile/jobs/621150390
- https://software.opensuse.org/package/swtpm

> doesn't like my native TPM because it doesn't allow cancellation.
> 
> v3 pulls out more unneeded code in the visitor conversion, makes
> migration work on external state preservation of the simulator and
> adds documentation
> 
> v4 puts back the wrapper options (but doesn't add any for mssim since
> it post dates the necessity)
> 
> v5 rebases to the latest master branch and adjusts for removed use_FOO ptrs
> 
> v5 updates help to exit zero; does some checkpatch tidying
> 
> v7 merge review feedback and add acks.
> 
> v8 adds better error handling, more code tidies and adds command
>     socket disconnection/reconnection (instead of trying to keep the
>     socket open the whole time).  This adds overhead, but makes
>     debugging guest kernel TPM issues much easier.
> 
> v9 Fix merge conflict with optarg->optstr conversion
> 
> v10 Fix more merge conflicts and update API versions
> 
> James
> 
> ---
> 
> James Bottomley (2):
>    tpm: convert tpmdev options processing to new visitor format
>    tpm: add backend for mssim
> 
>   MAINTAINERS                    |   6 +
>   backends/tpm/Kconfig           |   5 +
>   backends/tpm/meson.build       |   1 +
>   backends/tpm/tpm_emulator.c    |  25 ++-
>   backends/tpm/tpm_mssim.c       | 319 +++++++++++++++++++++++++++++++++
>   backends/tpm/tpm_mssim.h       |  44 +++++
>   backends/tpm/tpm_passthrough.c |  23 +--
>   docs/specs/tpm.rst             |  39 ++++
>   include/sysemu/tpm.h           |   5 +-
>   include/sysemu/tpm_backend.h   |   2 +-
>   qapi/tpm.json                  |  50 +++++-
>   system/tpm-hmp-cmds.c          |   9 +
>   system/tpm.c                   |  91 ++++------
>   system/vl.c                    |  19 +-
>   14 files changed, 530 insertions(+), 108 deletions(-)
>   create mode 100644 backends/tpm/tpm_mssim.c
>   create mode 100644 backends/tpm/tpm_mssim.h
> 

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