diff options
| author | Singh, Brijesh <brijesh.singh@amd.com> | 2019-03-28 21:58:52 +0000 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-04-08 14:36:16 +0800 |
| commit | d6112ea0cb344d6f5ed519991e24f69ba4b43d0e (patch) | |
| tree | a0dc3e4abe899584e16833c5ac8f692a7d292465 /include/uapi | |
| parent | ffecb696d462de995fad2ad4429a509f439ddef0 (diff) | |
crypto: ccp - introduce SEV_GET_ID2 command
The current definition and implementation of the SEV_GET_ID command
does not provide the length of the unique ID returned by the firmware.
As per the firmware specification, the firmware may return an ID
length that is not restricted to 64 bytes as assumed by the SEV_GET_ID
command.
Introduce the SEV_GET_ID2 command to overcome with the SEV_GET_ID
limitations. Deprecate the SEV_GET_ID in the favor of SEV_GET_ID2.
At the same time update SEV API web link.
Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Gary Hook <gary.hook@amd.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Nathaniel McCallum <npmccallum@redhat.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'include/uapi')
| -rw-r--r-- | include/uapi/linux/psp-sev.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/include/uapi/linux/psp-sev.h b/include/uapi/linux/psp-sev.h index ac8c60bcc83b..43521d500c2b 100644 --- a/include/uapi/linux/psp-sev.h +++ b/include/uapi/linux/psp-sev.h @@ -6,8 +6,7 @@ * * Author: Brijesh Singh <brijesh.singh@amd.com> * - * SEV spec 0.14 is available at: - * http://support.amd.com/TechDocs/55766_SEV-KM%20API_Specification.pdf + * SEV API specification is available at: https://developer.amd.com/sev/ * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -30,7 +29,8 @@ enum { SEV_PDH_GEN, SEV_PDH_CERT_EXPORT, SEV_PEK_CERT_IMPORT, - SEV_GET_ID, + SEV_GET_ID, /* This command is deprecated, use SEV_GET_ID2 */ + SEV_GET_ID2, SEV_MAX, }; @@ -125,7 +125,7 @@ struct sev_user_data_pdh_cert_export { } __packed; /** - * struct sev_user_data_get_id - GET_ID command parameters + * struct sev_user_data_get_id - GET_ID command parameters (deprecated) * * @socket1: Buffer to pass unique ID of first socket * @socket2: Buffer to pass unique ID of second socket @@ -136,6 +136,16 @@ struct sev_user_data_get_id { } __packed; /** + * struct sev_user_data_get_id2 - GET_ID command parameters + * @address: Buffer to store unique ID + * @length: length of the unique ID + */ +struct sev_user_data_get_id2 { + __u64 address; /* In */ + __u32 length; /* In/Out */ +} __packed; + +/** * struct sev_issue_cmd - SEV ioctl parameters * * @cmd: SEV commands to execute |