[PATCHv4 0/4] Add generic MMIO instruction deconding to be used in SEV and TDX

[Kirill A. Shutemov]

Both AMD SEV and Intel TDX has to decode MMIO instruction to be able to
handle MMIO.

Extract insn_decode_mmio() from SEV code. TDX will also use this helper.

v4:
 - Use enum mmio_type inside insn_decode_mmio() (Tom)
 - Keep a comment in vc_handle_mmio() (Tom)
 - Tested-by on AMD HW from Joerg.
v3:
 - Handle insn_get_opcode() in is_string_insn()
v2:
 - insn_get_modrm_reg_ptr() returns unsigned long pointer now (PeterZ);
 - Handle insn_get_opcode() failure in insn_decode_mmio() (PeterZ);


Kirill A. Shutemov (4):
  x86/insn-eval: Handle insn_get_opcode() failure
  x86/insn-eval: Introduce insn_get_modrm_reg_ptr()
  x86/insn-eval: Introduce insn_decode_mmio()
  x86/sev-es: Use insn_decode_mmio() for MMIO implementation

 arch/x86/include/asm/insn-eval.h |  13 +++
 arch/x86/kernel/sev.c            | 172 ++++++++-----------------------
 arch/x86/lib/insn-eval.c         | 109 +++++++++++++++++++-
 3 files changed, 161 insertions(+), 133 deletions(-)

-- 
2.32.0