This patch adds "wbinvd" instruction emulation for vm86 mode.

This is needed when we bring up AP of SMP VMX guest.

Signed-off-by: Xin Li <xin.b.li@intel.com>

diff --git a/tools/firmware/vmxassist/vm86.c b/tools/firmware/vmxassist/vm86.c
index 27b0bf634014fb631b761914aa4d4fcc6dee8f8e..750e58a14a961225cf9e3e2d26b906657721b833 100644 (file)
--- a/tools/firmware/vmxassist/vm86.c
+++ b/tools/firmware/vmxassist/vm86.c
@@ -752,6 +752,9 @@ opcode(struct regs *regs)
                                        goto invalid;
                                }
                                break;
+                       case 0x09: /* wbinvd */
+                               asm volatile ( "wbinvd" );
+                               return OPC_EMULATED;
                        case 0x20: /* mov Rd, Cd (1h) */
                        case 0x22:
                                if (!movcr(regs, prefix, opc))