Kexec with FRED happens to already function.

Looking at the logic, several unsafe actions are occuring.  Fix the worst of
them.

Andrew Cooper (4):
  x86/kexec: Stop hooking NMIs with trap_nop()
  x86/kexec: Fix and expands comments for kexec_reloc()
  x86/kexec: Invalidate the IDT earlier in kexec_reloc()
  x86/kexec: Disable FRED earlier in kexec_reloc()

 xen/arch/x86/crash.c              | 20 +++++-----
 xen/arch/x86/x86_64/kexec_reloc.S | 62 ++++++++++++++++++++++---------
 2 files changed, 55 insertions(+), 27 deletions(-)

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2.39.5