KVM: Remove unused 'instruction_length'

As we no longer emulate in userspace, this is meaningless.  We don't
compute it on SVM anyway.

Signed-off-by: Avi Kivity <avi@qumranet.com>

drivers/kvm/vmx.c

@@ -1783,7 +1783,6 @@ static int kvm_handle_exit(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
 				exit_reason != EXIT_REASON_EXCEPTION_NMI )
 		printk(KERN_WARNING "%s: unexpected, valid vectoring info and "
 		       "exit reason is 0x%x\n", __FUNCTION__, exit_reason);
-	kvm_run->instruction_length = vmcs_read32(VM_EXIT_INSTRUCTION_LEN);
 	if (exit_reason < kvm_vmx_max_exit_handlers
 	    && kvm_vmx_exit_handlers[exit_reason])
 		return kvm_vmx_exit_handlers[exit_reason](vcpu, kvm_run);

include/linux/kvm.h

@@ -11,7 +11,7 @@
 #include <asm/types.h>
 #include <linux/ioctl.h>
 
-#define KVM_API_VERSION 11
+#define KVM_API_VERSION 12
 
 /*
  * Architectural interrupt line count, and the size of the bitmap needed
@@ -63,10 +63,9 @@ struct kvm_run {
 
 	/* out */
 	__u32 exit_reason;
-	__u32 instruction_length;
 	__u8 ready_for_interrupt_injection;
 	__u8 if_flag;
-	__u8 padding2[6];
+	__u8 padding2[2];
 
 	/* in (pre_kvm_run), out (post_kvm_run) */
 	__u64 cr8;