linux/arch/x86/coco/tdx/Makefile

# SPDX-License-Identifier: GPL-2.0

obj-y += debug.o tdcall.o tdx.o tdx-shared.o
x86/tdx: Detect running as a TDX guest in early boot In preparation of extending cc_platform_has() API to support TDX guest, use CPUID instruction to detect support for TDX guests in the early boot code (via tdx_early_init()). Since copy_bootdata() is the first user of cc_platform_has() API, detect the TDX guest status before it. Define a synthetic feature flag (X86_FEATURE_TDX_GUEST) and set this bit in a valid TDX guest platform. Signed-off-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Reviewed-by: Tony Luck <tony.luck@intel.com> Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Borislav Petkov <bp@suse.de> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20220405232939.73860-2-kirill.shutemov@linux.intel.com 2022-04-06 02:29:10 +03:00			`# SPDX-License-Identifier: GPL-2.0`

x86/tdx: Dump attributes and TD_CTLS on boot Dump TD configuration on boot. Attributes and TD_CTLS define TD behavior. This information is useful for tracking down bugs. The output ends up looking like this in practice: [ 0.000000] tdx: Guest detected [ 0.000000] tdx: Attributes: SEPT_VE_DISABLE [ 0.000000] tdx: TD_CTLS: PENDING_VE_DISABLE ENUM_TOPOLOGY VIRT_CPUID2 REDUCE_VE Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com> Reviewed-by: Nikolay Borisov <nik.borisov@suse.com> Link: https://lore.kernel.org/all/20241202072458.447455-1-kirill.shutemov%40linux.intel.com 2024-12-02 09:24:58 +02:00			`obj-y += debug.o tdcall.o tdx.o tdx-shared.o`