[PATCH 0/2] Kexec enabling in TDX guest

[Kirill A. Shutemov]

The patch brings basic enabling of kexec in TDX guests.

By "basic enabling" I mean, kexec in the guests with a single CPU.
TDX guests use ACPI MADT MPWK to bring up secondary CPUs. The mechanism
doesn't allow to put a CPU back offline if it has woken up.

We are looking into this, but it might take time.

Kirill A. Shutemov (2):
  x86/kexec: Preserve CR4.MCE during kexec
  x86/tdx: Convert shared memory back to private on kexec

 arch/x86/coco/tdx/Makefile           |  1 +
 arch/x86/coco/tdx/kexec.c            | 82 ++++++++++++++++++++++++++++
 arch/x86/include/asm/tdx.h           |  4 ++
 arch/x86/kernel/machine_kexec_64.c   |  2 +
 arch/x86/kernel/relocate_kernel_64.S |  6 +-
 5 files changed, 94 insertions(+), 1 deletion(-)
 create mode 100644 arch/x86/coco/tdx/kexec.c

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2.39.1