vmx_msr.h revision 270159 
1/*-
2 * Copyright (c) 2011 NetApp, Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: stable/10/sys/amd64/vmm/intel/vmx_msr.h 270159 2014-08-19 01:20:24Z grehan $
27 */
28
29#ifndef _VMX_MSR_H_
30#define	_VMX_MSR_H_
31
32uint32_t vmx_revision(void);
33
34int vmx_set_ctlreg(int ctl_reg, int true_ctl_reg, uint32_t ones_mask,
35		   uint32_t zeros_mask, uint32_t *retval);
36
37/*
38 * According to Section 21.10.4 "Software Access to Related Structures",
39 * changes to data structures pointed to by the VMCS must be made only when
40 * there is no logical processor with a current VMCS that points to the
41 * data structure.
42 *
43 * This pretty much limits us to configuring the MSR bitmap before VMCS
44 * initialization for SMP VMs. Unless of course we do it the hard way - which
45 * would involve some form of synchronization between the vcpus to vmclear
46 * all VMCSs' that point to the bitmap.
47 */
48#define	MSR_BITMAP_ACCESS_NONE	0x0
49#define	MSR_BITMAP_ACCESS_READ	0x1
50#define	MSR_BITMAP_ACCESS_WRITE	0x2
51#define	MSR_BITMAP_ACCESS_RW	(MSR_BITMAP_ACCESS_READ|MSR_BITMAP_ACCESS_WRITE)
52void	msr_bitmap_initialize(char *bitmap);
53int	msr_bitmap_change_access(char *bitmap, u_int msr, int access);
54
55#endif
56