| From: |
| Alexey Gladkov <legion-AT-kernel.org> |
| To: |
| x86-AT-kernel.org |
| Subject: |
| [RFC PATCH v1 0/3] Export TDX module information via SYSFS |
| Date: |
| Fri, 14 Mar 2025 12:56:25 +0100 |
| Message-ID: |
| <cover.1741952958.git.legion@kernel.org> |
| Cc: |
| "Alexey Gladkov (Intel)" <legion-AT-kernel.org>, linux-kernel-AT-vger.kernel.org, linux-coco-AT-lists.linux.dev, Alexey Gladkov <alexey.gladkov-AT-intel.com>, "H . Peter Anvin" <hpa-AT-zytor.com>, Joerg Roedel <jroedel-AT-suse.de>, Juergen Gross <jgross-AT-suse.com>, "Kirill A . Shutemov" <kirill.shutemov-AT-linux.intel.com>, Larry.Dewey-AT-amd.com, Nikunj A Dadhania <nikunj-AT-amd.com>, Tom Lendacky <thomas.lendacky-AT-amd.com> |
| Archive-link: |
| Article |
From: "Alexey Gladkov (Intel)" <legion@kernel.org>
TD-Preserving updates depend on a userspace tool to select the appropriate
module to load. To facilitate this decision-making process, expose the
necessary information to userspace.
Also TDX module information (version, supported features, etc) is crucial for
bug reporting. For this purpose, it makes sense to have a consistent structure
for host and guest information in sysfs.
As already discussed [1] in the mailing list for tdx used the directory
/sys/hypervisor/tdx.
[1] https://lore.kernel.org/lkml/20250311110748.GCZ9AZhPYYAz-...
Alexey Gladkov (Intel) (3):
x86/tdx: Make TDX metadata available via SYSFS
x86/tdx: Make TDX metadata available on guest via SYSFS
docs: ABI: testing: Add documentation about TDX
.../ABI/testing/sysfs-hypervisor-tdx | 50 ++++++++++
arch/x86/Kconfig | 2 +
arch/x86/coco/tdx/tdx.c | 92 +++++++++++++++++++
arch/x86/include/asm/shared/tdx.h | 2 +
arch/x86/include/asm/tdx.h | 12 +++
arch/x86/virt/vmx/tdx/tdx.c | 74 +++++++++++++++
6 files changed, 232 insertions(+)
create mode 100644 Documentation/ABI/testing/sysfs-hypervisor-tdx
--
2.48.1
