From: Dan Williams <dan.j.williams@intel.com>
To: linux-coco@lists.linux.dev
Cc: Brijesh Singh <brijesh.singh@amd.com>,
Kuppuswamy Sathyanarayanan
<sathyanarayanan.kuppuswamy@linux.intel.com>,
Erdem Aktas <erdemaktas@google.com>,
Peter Zijlstra <peterz@infradead.org>,
Tom Lendacky <thomas.lendacky@amd.com>,
Peter Gonda <pgonda@google.com>, Borislav Petkov <bp@alien8.de>,
Dionna Amalie Glaze <dionnaglaze@google.com>,
Jeremi Piotrowski <jpiotrowski@linux.microsoft.com>,
Thomas Gleixner <tglx@linutronix.de>,
Samuel Ortiz <sameo@rivosinc.com>,
Dionna Glaze <dionnaglaze@google.com>,
Pankaj Gupta <pankaj.gupta@amd.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
sathyanarayanan.kuppuswamy@linux.intel.com,
dave.hansen@linux.intel.com, bp@alien8.de
Subject: [PATCH v5 0/7] configfs-tsm: Attestation Report ABI
Date: Tue, 10 Oct 2023 22:27:10 -0700 [thread overview]
Message-ID: <169700203032.779347.11603484721811916604.stgit@dwillia2-xfh.jf.intel.com> (raw)
Changes since v4 [1]:
- Fix a stack buffer vs scatterlist bug in sev-guest (Peter)
- Test on AMD hardware, thanks Peter for the help!
- Fix size of @len in __read_report() (Sathya)
- Clarify the NULL @buf case in __read_report() (Sathya)
- Fix kdoc for 'struct tsm_report' (Sathya)
- Add kdoc for 'struct tsm_ops' (Sathya)
- Initialize @certs_size to zero in sev_report_new() (Dan, smatch)
- Add links to documentation for the attestation report formats
- Drop conversion of sev-guest get_report(), just use get_ext_report()
exclusively
- Add is_vmpck_empty() and exitinfo2 init in set_report_new() similar to
the ioctl() path
[1]: http://lore.kernel.org/r/169570181657.596431.6178773442587231200.stgit@dwillia2-xfh.jf.intel.com
---
Merge notes: I am looking for Dave or Boris to pick this up, I believe
all outstanding comments have been resolved and this has now been
smoke-tested on AMD and Intel platforms.
---
An attestation report is signed evidence of how a Trusted Virtual
Machine (TVM) was launched and its current state. A verifying party uses
the report to make judgements of the confidentiality and integrity of
that execution environment. Upon successful attestation the verifying
party may, for example, proceed to deploy secrets to the TVM to carry
out a workload. Multiple confidential computing platforms share this
similar flow.
The approach of adding adding new char devs and new ioctls, for what
amounts to the same logical functionality with minor formatting
differences across vendors [2], is untenable. Common concepts and the
community benefit from common infrastructure.
Use configfs for this facility for maintainability compared to ioctl(),
and for its scalability compared to sysfs. Atomicity can be enforced at
item creation time, and a conflict detection mechanism is included for
scenarios where multiple threads may share a single configuration
instance.
[2]: http://lore.kernel.org/r/cover.1684048511.git.sathyanarayanan.kuppuswamy@linux.intel.com
---
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 | 76 ++++++
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 | 218 ++++++++++++++--
drivers/virt/coco/tdx-guest/Kconfig | 1
drivers/virt/coco/tdx-guest/tdx-guest.c | 229 +++++++++++++++++
drivers/virt/coco/tsm.c | 416 +++++++++++++++++++++++++++++++
include/linux/slab.h | 2
include/linux/tsm.h | 68 +++++
16 files changed, 1039 insertions(+), 36 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
next reply other threads:[~2023-10-11 5:27 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-11 5:27 Dan Williams [this message]
2023-10-11 5:27 ` [PATCH v5 1/7] virt: sevguest: Fix passing a stack buffer as a scatterlist target Dan Williams
2023-10-11 5:27 ` [PATCH v5 2/7] virt: coco: Add a coco/Makefile and coco/Kconfig Dan Williams
2023-10-11 5:27 ` [PATCH v5 3/7] configfs-tsm: Introduce a shared ABI for attestation reports Dan Williams
2023-10-11 6:29 ` Kuppuswamy Sathyanarayanan
2023-10-11 5:27 ` [PATCH v5 4/7] virt: sevguest: Prep for kernel internal get_ext_report() Dan Williams
2023-10-11 5:27 ` [PATCH v5 5/7] mm/slab: Add __free() support for kvfree Dan Williams
2023-10-11 6:31 ` Kuppuswamy Sathyanarayanan
2023-10-11 5:27 ` [PATCH v5 6/7] virt: sevguest: Add TSM_REPORTS support for SNP_GET_EXT_REPORT Dan Williams
2023-10-11 16:13 ` Dionna Amalie Glaze
2023-10-11 20:41 ` Dan Williams
2023-10-11 21:06 ` Dionna Amalie Glaze
2023-10-11 19:24 ` Tom Lendacky
2023-10-11 21:30 ` Dan Williams
2023-10-11 22:21 ` Dionna Amalie Glaze
2023-10-11 22:24 ` Tom Lendacky
2023-10-12 0:38 ` Dan Williams
2023-10-11 5:27 ` [PATCH v5 7/7] virt: tdx-guest: Add Quote generation support using TSM_REPORTS Dan Williams
2023-10-11 6:44 ` [PATCH v5 0/7] configfs-tsm: Attestation Report ABI Kuppuswamy Sathyanarayanan
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