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
