linux-kernel - [GIT PULL] x86/seves fixes for v5.10-rc3

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Message-ID: <20201103100012.GA7825@zn.tnic>
Date:   Tue, 3 Nov 2020 11:00:12 +0100
From:   Borislav Petkov <bp@...e.de>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     x86-ml <x86@...nel.org>, lkml <linux-kernel@...r.kernel.org>
Subject: [GIT PULL] x86/seves fixes for v5.10-rc3

Hi Linus,

please pull a couple of SEV-ES hardening fixes against a malicious
hypervisor.

Thx.

---

The following changes since commit 3650b228f83adda7e5ee532e2b90429c03f7b9ec:

  Linux 5.10-rc1 (2020-10-25 15:14:11 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git tags/x86_seves_for_v5.10_rc3

for you to fetch changes up to 2411cd82112397bfb9d8f0f19cd46c3d71e0ce67:

  x86/sev-es: Do not support MMIO to/from encrypted memory (2020-10-29 19:27:42 +0100)

----------------------------------------------------------------
A couple of changes to the SEV-ES code to perform more stringent
hypervisor checks before enabling encryption. (Joerg Roedel)

----------------------------------------------------------------
Joerg Roedel (5):
      x86/boot/compressed/64: Introduce sev_status
      x86/boot/compressed/64: Sanity-check CPUID results in the early #VC handler
      x86/boot/compressed/64: Check SEV encryption in 64-bit boot-path
      x86/head/64: Check SEV encryption before switching to kernel page-table
      x86/sev-es: Do not support MMIO to/from encrypted memory

 arch/x86/boot/compressed/ident_map_64.c |  1 +
 arch/x86/boot/compressed/mem_encrypt.S  | 20 +++++++-
 arch/x86/boot/compressed/misc.h         |  2 +
 arch/x86/kernel/head_64.S               | 16 ++++++
 arch/x86/kernel/sev-es-shared.c         | 26 ++++++++++
 arch/x86/kernel/sev-es.c                | 20 +++++---
 arch/x86/kernel/sev_verify_cbit.S       | 89 +++++++++++++++++++++++++++++++++
 arch/x86/mm/mem_encrypt.c               |  1 +
 8 files changed, 167 insertions(+), 8 deletions(-)
 create mode 100644 arch/x86/kernel/sev_verify_cbit.S

-- 
Regards/Gruss,
    Boris.

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