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);
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