svn commit: r283299 - head/sys/amd64/vmm

[Neel Natu]

Author: neel
Date: Fri May 22 21:09:11 2015
New Revision: 283299
URL: https://svnweb.freebsd.org/changeset/base/283299

Log:
  Remove the verification of instruction length after instruction decode. The
  check has been bogus since r273375.
  
  MFC after:	1 week

Modified:
  head/sys/amd64/vmm/vmm_instruction_emul.c

Modified: head/sys/amd64/vmm/vmm_instruction_emul.c
==============================================================================
--- head/sys/amd64/vmm/vmm_instruction_emul.c	Fri May 22 21:04:42 2015	(r283298)
+++ head/sys/amd64/vmm/vmm_instruction_emul.c	Fri May 22 21:09:11 2015	(r283299)
@@ -2315,19 +2315,6 @@ decode_moffset(struct vie *vie)
 }
 
 /*
- * Verify that all the bytes in the instruction buffer were consumed.
- */
-static int
-verify_inst_length(struct vie *vie)
-{
-
-	if (vie->num_processed)
-		return (0);
-	else
-		return (-1);
-}
-
-/*
  * Verify that the 'guest linear address' provided as collateral of the nested
  * page table fault matches with our instruction decoding.
  */
@@ -2408,9 +2395,6 @@ vmm_decode_instruction(struct vm *vm, in
 	if (decode_moffset(vie))
 		return (-1);
 
-	if (verify_inst_length(vie))
-		return (-1);
-
 	if ((vie->op.op_flags & VIE_OP_F_NO_GLA_VERIFICATION) == 0) {
 		if (verify_gla(vm, cpuid, gla, vie))
 			return (-1);