From 3565b59ec0859c698c72972e53ce73e2a3dedbd7 Mon Sep 17 00:00:00 2001
From: Neel Natu <neel@FreeBSD.org>
Date: Sat, 13 Apr 2013 21:41:51 +0000
Subject: [PATCH] Create sysctl node 'hw.vmm.vmx' and populate it with oids
 that expose the VMX hardware capabilities.

Obtained from:	NetApp
---
 sys/amd64/vmm/intel/vmx.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/sys/amd64/vmm/intel/vmx.c b/sys/amd64/vmm/intel/vmx.c
index fb410746db2..e950d18d79f 100644
--- a/sys/amd64/vmm/intel/vmx.c
+++ b/sys/amd64/vmm/intel/vmx.c
@@ -36,6 +36,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/malloc.h>
 #include <sys/pcpu.h>
 #include <sys/proc.h>
+#include <sys/sysctl.h>
 
 #include <vm/vm.h>
 #include <vm/pmap.h>
@@ -116,6 +117,9 @@ __FBSDID("$FreeBSD$");
 
 MALLOC_DEFINE(M_VMX, "vmx", "vmx");
 
+SYSCTL_DECL(_hw_vmm);
+SYSCTL_NODE(_hw_vmm, OID_AUTO, vmx, CTLFLAG_RW, NULL, NULL);
+
 int vmxon_enabled[MAXCPU];
 static char vmxon_region[MAXCPU][PAGE_SIZE] __aligned(PAGE_SIZE);
 
@@ -123,12 +127,25 @@ static uint32_t pinbased_ctls, procbased_ctls, procbased_ctls2;
 static uint32_t exit_ctls, entry_ctls;
 
 static uint64_t cr0_ones_mask, cr0_zeros_mask;
+SYSCTL_ULONG(_hw_vmm_vmx, OID_AUTO, cr0_ones_mask, CTLFLAG_RD,
+	     &cr0_ones_mask, 0, NULL);
+SYSCTL_ULONG(_hw_vmm_vmx, OID_AUTO, cr0_zeros_mask, CTLFLAG_RD,
+	     &cr0_zeros_mask, 0, NULL);
+
 static uint64_t cr4_ones_mask, cr4_zeros_mask;
+SYSCTL_ULONG(_hw_vmm_vmx, OID_AUTO, cr4_ones_mask, CTLFLAG_RD,
+	     &cr4_ones_mask, 0, NULL);
+SYSCTL_ULONG(_hw_vmm_vmx, OID_AUTO, cr4_zeros_mask, CTLFLAG_RD,
+	     &cr4_zeros_mask, 0, NULL);
 
 static volatile u_int nextvpid;
 
 static int vmx_no_patmsr;
 
+static int vmx_initialized;
+SYSCTL_INT(_hw_vmm_vmx, OID_AUTO, initialized, CTLFLAG_RD,
+	   &vmx_initialized, 0, "Intel VMX initialized");
+
 /*
  * Virtual NMI blocking conditions.
  *
@@ -593,6 +610,8 @@ vmx_init(void)
 	/* enable VMX operation */
 	smp_rendezvous(NULL, vmx_enable, NULL, NULL);
 
+	vmx_initialized = 1;
+
 	return (0);
 }