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

From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	Tom Lendacky <thomas.lendacky@amd.com>,
	Joerg Roedel <jroedel@suse.de>
Cc: Kuppuswamy Sathyanarayanan 
	<sathyanarayanan.kuppuswamy@linux.intel.com>,
	Andi Kleen <ak@linux.intel.com>,
	Dave Hansen <dave.hansen@intel.com>,
	Sean Christopherson <seanjc@google.com>,
	Peter Zijlstra <peterz@infradead.org>,
	"Nakajima, Jun" <jun.nakajima@intel.com>,
	x86@kernel.org, linux-kernel@vger.kernel.org,
	"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Subject: [PATCHv4 0/4] Add generic MMIO instruction deconding to be used in SEV and TDX
Date: Tue, 30 Nov 2021 21:49:29 +0300	[thread overview]
Message-ID: <20211130184933.31005-1-kirill.shutemov@linux.intel.com> (raw)

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