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configfs-tsm: Attestation Report ABI

From:  Dan Williams <dan.j.williams-AT-intel.com>
To:  linux-coco-AT-lists.linux.dev
Subject:  [PATCH v7 0/7] configfs-tsm: Attestation Report ABI
Date:  Thu, 19 Oct 2023 18:16:25 -0700
Message-ID:  <169776458564.1705513.13069337506739791098.stgit@dwillia2-xfh.jf.intel.com>
Cc:  Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy-AT-linux.intel.com>, Erdem Aktas <erdemaktas-AT-google.com>, Peter Zijlstra <peterz-AT-infradead.org>, Tom Lendacky <thomas.lendacky-AT-amd.com>, Peter Gonda <pgonda-AT-google.com>, Borislav Petkov <bp-AT-alien8.de>, Dionna Amalie Glaze <dionnaglaze-AT-google.com>, Jeremi Piotrowski <jpiotrowski-AT-linux.microsoft.com>, Thomas Gleixner <tglx-AT-linutronix.de>, Samuel Ortiz <sameo-AT-rivosinc.com>, Dionna Glaze <dionnaglaze-AT-google.com>, Pankaj Gupta <pankaj.gupta-AT-amd.com>, Greg Kroah-Hartman <gregkh-AT-linuxfoundation.org>, Alexey Kardashevskiy <aik-AT-amd.com>, Andrew Morton <akpm-AT-linux-foundation.org>, James Bottomley <James.Bottomley-AT-HansenPartnership.com>, dave.hansen-AT-linux.intel.com, x86-AT-kernel.org
Archive-link:  Article

Changes since v6 [1]:
- s/sev-guest/sev_guest/ in Documentation (Alexey)
- s/tdx-guest/tdx_guest/ in Documentation (Alexey)
- Check for ops registration in tsm_report_read() (Alexey)
- Reorder declaration of tsm_report_extra_attr and
  tsm_report_extra_bin_attrs to make it clear they are supersets of
  their "non-extra" versions (Alexey)
- s/ext/extra/ (Alexey)
- Move tsm_report_group declaration closer to its usage (Alexey)
- Convert from int to unsigned int (multiple locations) (Alexey)
- Drop device.h include (Alexey)
- Move SNP_REPORT_INVALID_{PARAM,KEY} definitions to sev_ret_code values
  (Alexey)
- Use guid_is_null() and explicit offset and length checks to detect
  empty entries (Alexey)
- Replace magic number 64 with a new "SNP_REPORT_USER_DATA_SIZE" name
  (Alexey)
- Add warning message for suspicious cases where the certificate table
  appears malformed (Alexey)

[1]: http://lore.kernel.org/r/169716323436.984874.917096799053...

---

Merge notes: The feedback has reached a point where the big picture
changes have been made and the last round was into more form and style
cleanups. As for merging I leave it for Dave and Boris to comment. I
am open to sending a pull request, just let me know.

Much thanks to Alexey and Peter for verifying that the certificate table
is being correctly conveyed through the @auxblob attribute, and for all
the review from everyone. I smoke tested these again after the cleanups.

---

Dan Williams (6):
      virt: sevguest: Fix passing a stack buffer as a scatterlist target
      virt: coco: Add a coco/Makefile and coco/Kconfig
      configfs-tsm: Introduce a shared ABI for attestation reports
      virt: sevguest: Prep for kernel internal get_ext_report()
      mm/slab: Add __free() support for kvfree
      virt: sevguest: Add TSM_REPORTS support for SNP_GET_EXT_REPORT

Kuppuswamy Sathyanarayanan (1):
      virt: tdx-guest: Add Quote generation support using TSM_REPORTS


 Documentation/ABI/testing/configfs-tsm  |   82 ++++++
 MAINTAINERS                             |    8 +
 arch/x86/coco/tdx/tdx.c                 |   21 ++
 arch/x86/include/asm/shared/tdx.h       |    1 
 arch/x86/include/asm/tdx.h              |    2 
 drivers/virt/Kconfig                    |    6 
 drivers/virt/Makefile                   |    4 
 drivers/virt/coco/Kconfig               |   14 +
 drivers/virt/coco/Makefile              |    8 +
 drivers/virt/coco/sev-guest/Kconfig     |    1 
 drivers/virt/coco/sev-guest/sev-guest.c |  214 ++++++++++++++--
 drivers/virt/coco/tdx-guest/Kconfig     |    1 
 drivers/virt/coco/tdx-guest/tdx-guest.c |  229 +++++++++++++++++
 drivers/virt/coco/tsm.c                 |  425 +++++++++++++++++++++++++++++++
 include/linux/slab.h                    |    2 
 include/linux/tsm.h                     |   69 +++++
 include/uapi/linux/psp-sev.h            |    1 
 include/uapi/linux/sev-guest.h          |    4 
 18 files changed, 1055 insertions(+), 37 deletions(-)
 create mode 100644 Documentation/ABI/testing/configfs-tsm
 create mode 100644 drivers/virt/coco/Kconfig
 create mode 100644 drivers/virt/coco/Makefile
 create mode 100644 drivers/virt/coco/tsm.c
 create mode 100644 include/linux/tsm.h

base-commit: 6465e260f48790807eef06b583b38ca9789b6072



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