[PATCH v3 0/5] Add TDX Guest Support (Debug support)

[Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>]

Hi All,

Intel's Trust Domain Extensions (TDX) protect guest VMs from malicious
hosts and some physical attacks.

Following patches adds tracepoint support for TDX Guest TDCALL requests
and #VE exceptions. It also includes helper function to detect TD-DEBUG
mode which will be used by patches in other TDX series to add TD-DEBUG
mode specific features support.

This series is the continuation of the following TDX guest related patches.

[set 1, v5] - https://lore.kernel.org/patchwork/project/lkml/list/?series=510805
[set 2, v4] - https://lore.kernel.org/patchwork/project/lkml/list/?series=510814
[set 3, v4] - https://lore.kernel.org/patchwork/project/lkml/list/?series=510816
[set 4, v4] - https://lore.kernel.org/patchwork/project/lkml/list/?series=510836

Also please note that this series alone is not necessarily fully
functional. You need to apply all the above 4 patch series to get 
a fully functional TDX guest.

Changes since v2:
 * Added taint flag support for TDX overrides.
 * Moved patch titled "x86/tdx: Add tdg_debug_enabled() interface" to
   the patch series which actually uses it.
 * Added support to override protected guest flags.

Changes since v1:
 * Rebased on top of v5.14-rc1.

Andi Kleen (2):
  Add taint flag for TDX overrides
  x86/tdx: Add option to override prot values

Kuppuswamy Sathyanarayanan (2):
  x86/tdx: Add TDCALL tracepoint
  x86/tdx: Expose TDX Guest #VE count in /proc/interrupts

Sean Christopherson (1):
  x86/tdx: Add #VE tracepoint

 .../admin-guide/kernel-parameters.txt         |   8 +
 Documentation/admin-guide/tainted-kernels.rst |   7 +-
 arch/x86/include/asm/hardirq.h                |   3 +
 arch/x86/include/asm/tdx.h                    |   2 +
 arch/x86/include/asm/trace/tdx.h              | 158 ++++++++++++++++++
 arch/x86/kernel/irq.c                         |   6 +
 arch/x86/kernel/tdx.c                         |  88 ++++++++--
 arch/x86/kernel/traps.c                       |   2 +
 include/linux/panic.h                         |   3 +-
 kernel/panic.c                                |   1 +
 10 files changed, 263 insertions(+), 15 deletions(-)
 create mode 100644 arch/x86/include/asm/trace/tdx.h

-- 
2.25.1