linux-kernel - [GIT PULL] x86/sev for v6.16-rc1

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Message-ID: <20250526194634.GAaDTFGr3LAfeGdCxe@fat_crate.local>
Date: Mon, 26 May 2025 21:46:34 +0200
From: Borislav Petkov <bp@...en8.de>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: x86-ml <x86@...nel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] x86/sev for v6.16-rc1

Hi Linus,

please pull the x86/sev lineup for v6.16-rc1.

Thx.

---

The following changes since commit 0af2f6be1b4281385b618cb86ad946eded089ac8:

  Linux 6.15-rc1 (2025-04-06 13:11:33 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip tags/x86_sev_for_v6.16_rc1

for you to fetch changes up to e396dd85172c6098e3b70b17e91424edc7bb2d8f:

  x86/sev: Register tpm-svsm platform device (2025-04-10 16:25:33 +0200)

----------------------------------------------------------------
Add a virtual TPM driver glue which allows a guest kernel to talk to a TPM
device emulated by a Secure VM Service Module (SVSM) - a helper module of sorts
which runs at a different privilege level in the SEV-SNP VM stack.

The intent being that a TPM device is emulated by a trusted entity and not by
the untrusted host which is the default assumption in the confidential
computing scenarios.

----------------------------------------------------------------
Stefano Garzarella (4):
      x86/sev: Add SVSM vTPM probe/send_command functions
      svsm: Add header with SVSM_VTPM_CMD helpers
      tpm: Add SNP SVSM vTPM driver
      x86/sev: Register tpm-svsm platform device

 arch/x86/coco/sev/core.c    |  69 +++++++++++++++++++-
 arch/x86/include/asm/sev.h  |   7 +++
 drivers/char/tpm/Kconfig    |  10 +++
 drivers/char/tpm/Makefile   |   1 +
 drivers/char/tpm/tpm_svsm.c | 125 +++++++++++++++++++++++++++++++++++++
 include/linux/tpm_svsm.h    | 149 ++++++++++++++++++++++++++++++++++++++++++++
 6 files changed, 360 insertions(+), 1 deletion(-)
 create mode 100644 drivers/char/tpm/tpm_svsm.c
 create mode 100644 include/linux/tpm_svsm.h


-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette