Explicitly mark EVEX-prefixed opcodes (0x62) as unsupported.
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
---
arch/x86/kvm/emulate.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index 1a565a4e3ff7..c5cb356f1524 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -5040,6 +5040,11 @@ int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len, int
if (ctxt->d & NoRex2 && ctxt->rex_prefix == REX2_PREFIX)
opcode.flags = Undefined;
+ /* EVEX-prefixed instructions are not implemented */
+ if (ctxt->opcode_len == 1 && ctxt->b == 0x62 &&
+ (mode == X86EMUL_MODE_PROT64 || (ctxt->modrm & 0xc0) == 0xc0))
+ opcode.flags = NotImpl;
+
if (opcode.flags & ModRM)
ctxt->modrm = insn_fetch(u8, ctxt);
--
2.51.0