diff options
Diffstat (limited to 'Documentation/ABI/testing')
| -rw-r--r-- | Documentation/ABI/testing/configfs-tsm | 63 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-devices-system-cpu | 18 |
2 files changed, 81 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/configfs-tsm b/Documentation/ABI/testing/configfs-tsm index dd24202b5ba5..534408bc1408 100644 --- a/Documentation/ABI/testing/configfs-tsm +++ b/Documentation/ABI/testing/configfs-tsm @@ -31,6 +31,18 @@ Description: Standardization v2.03 Section 4.1.8.1 MSG_REPORT_REQ. https://www.amd.com/content/dam/amd/en/documents/epyc-technical-docs/specifications/56421.pdf +What: /sys/kernel/config/tsm/report/$name/manifestblob +Date: January, 2024 +KernelVersion: v6.10 +Contact: linux-coco@lists.linux.dev +Description: + (RO) Optional supplemental data that a TSM may emit, visibility + of this attribute depends on TSM, and may be empty if no + manifest data is available. + + See 'service_provider' for information on the format of the + manifest blob. + What: /sys/kernel/config/tsm/report/$name/provider Date: September, 2023 KernelVersion: v6.7 @@ -80,3 +92,54 @@ Contact: linux-coco@lists.linux.dev Description: (RO) Indicates the minimum permissible value that can be written to @privlevel. + +What: /sys/kernel/config/tsm/report/$name/service_provider +Date: January, 2024 +KernelVersion: v6.10 +Contact: linux-coco@lists.linux.dev +Description: + (WO) Attribute is visible if a TSM implementation provider + supports the concept of attestation reports from a service + provider for TVMs, like SEV-SNP running under an SVSM. + Specifying the service provider via this attribute will create + an attestation report as specified by the service provider. + The only currently supported service provider is "svsm". + + For the "svsm" service provider, see the Secure VM Service Module + for SEV-SNP Guests v1.00 Section 7. For the doc, search for + "site:amd.com "Secure VM Service Module for SEV-SNP + Guests", docID: 58019" + +What: /sys/kernel/config/tsm/report/$name/service_guid +Date: January, 2024 +KernelVersion: v6.10 +Contact: linux-coco@lists.linux.dev +Description: + (WO) Attribute is visible if a TSM implementation provider + supports the concept of attestation reports from a service + provider for TVMs, like SEV-SNP running under an SVSM. + Specifying an empty/null GUID (00000000-0000-0000-0000-000000) + requests all active services within the service provider be + part of the attestation report. Specifying a GUID request + an attestation report of just the specified service using the + manifest form specified by the service_manifest_version + attribute. + + See 'service_provider' for information on the format of the + service guid. + +What: /sys/kernel/config/tsm/report/$name/service_manifest_version +Date: January, 2024 +KernelVersion: v6.10 +Contact: linux-coco@lists.linux.dev +Description: + (WO) Attribute is visible if a TSM implementation provider + supports the concept of attestation reports from a service + provider for TVMs, like SEV-SNP running under an SVSM. + Indicates the service manifest version requested for the + attestation report (default 0). If this field is not set by + the user, the default manifest version of the service (the + service's initial/first manifest version) is returned. + + See 'service_provider' for information on the format of the + service manifest version. diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu b/Documentation/ABI/testing/sysfs-devices-system-cpu index e7e160954e79..325873385b71 100644 --- a/Documentation/ABI/testing/sysfs-devices-system-cpu +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu @@ -605,6 +605,18 @@ Description: Umwait control Note that a value of zero means there is no limit. Low order two bits must be zero. +What: /sys/devices/system/cpu/sev + /sys/devices/system/cpu/sev/vmpl +Date: May 2024 +Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> +Description: Secure Encrypted Virtualization (SEV) information + + This directory is only present when running as an SEV-SNP guest. + + vmpl: Reports the Virtual Machine Privilege Level (VMPL) at which + the SEV-SNP guest is running. + + What: /sys/devices/system/cpu/svm Date: August 2019 Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> @@ -694,3 +706,9 @@ Description: (RO) indicates whether or not the kernel directly supports modifying the crash elfcorehdr for CPU hot un/plug and/or on/offline changes. + +What: /sys/devices/system/cpu/enabled +Date: Nov 2022 +Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org> +Description: + (RO) the list of CPUs that can be brought online. |