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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2026-02-15 10:20:37 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2026-02-15 10:20:37 -0800 |
| commit | c4f414becb6ac9c71ea80dd8b28478d357c62bb7 (patch) | |
| tree | 6d3456453659b6863e98fc0a397a0062432c90c7 /drivers/virt | |
| parent | bb7a3fc2c976b5d0deb35a54ca237519816d7ba9 (diff) | |
| parent | 43185067c6fd55b548ecb648a69d9569fcf622b5 (diff) | |
Merge tag 'tsm-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/devsec/tsm
Pull TSM updates from Dan Williams:
"A couple of updates to the maximum buffer sizes supported for the
configfs-tsm-reports interface.
This interface is a common transport that conveys the varied
architecture specific launch attestation reports for confidential VMs.
- Prepare the configfs-tsm-reports interface for passing larger
attestation evidence blobs for "Device Identifier Composition
Engine" (DICE) and Post Quantum Crypto (PQC)
- Update the tdx-guest driver for DICE evidence (larger certificate
chains and the CBOR Web Token schema)"
* tag 'tsm-for-7.0' of git://git.kernel.org/pub/scm/linux/kernel/git/devsec/tsm:
configfs-tsm-report: tdx_guest: Increase Quote buffer size to 128KB
configfs-tsm-report: Increase TSM_REPORT_OUTBLOB_MAX to 16MB
configfs-tsm-report: Document size limits for outblob attributes
Diffstat (limited to 'drivers/virt')
| -rw-r--r-- | drivers/virt/coco/tdx-guest/tdx-guest.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/virt/coco/tdx-guest/tdx-guest.c b/drivers/virt/coco/tdx-guest/tdx-guest.c index 4e239ec960c9..4252b147593a 100644 --- a/drivers/virt/coco/tdx-guest/tdx-guest.c +++ b/drivers/virt/coco/tdx-guest/tdx-guest.c @@ -160,8 +160,10 @@ static void tdx_mr_deinit(const struct attribute_group *mr_grp) /* * Intel's SGX QE implementation generally uses Quote size less * than 8K (2K Quote data + ~5K of certificate blob). + * DICE-based attestation uses layered evidence that requires + * larger Quote size (~100K). */ -#define GET_QUOTE_BUF_SIZE SZ_8K +#define GET_QUOTE_BUF_SIZE SZ_128K #define GET_QUOTE_CMD_VER 1 |