1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012 NetApp, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 /* 29 * This file and its contents are supplied under the terms of the 30 * Common Development and Distribution License ("CDDL"), version 1.0. 31 * You may only use this file in accordance with the terms of version 32 * 1.0 of the CDDL. 33 * 34 * A full copy of the text of the CDDL should have accompanied this 35 * source. A copy of the CDDL is also available via the Internet at 36 * http://www.illumos.org/license/CDDL. 37 * 38 * Copyright 2013 Pluribus Networks Inc. 39 * Copyright 2017 Joyent, Inc. 40 */ 41 42 #ifndef _VMM_HOST_H_ 43 #define _VMM_HOST_H_ 44 45 #ifndef __FreeBSD__ 46 #include <sys/cpuvar.h> 47 #endif 48 49 #ifndef _KERNEL 50 #error "no user-serviceable parts inside" 51 #endif 52 53 struct xsave_limits { 54 int xsave_enabled; 55 uint64_t xcr0_allowed; 56 uint32_t xsave_max_size; 57 }; 58 59 void vmm_host_state_init(void); 60 61 uint64_t vmm_get_host_pat(void); 62 uint64_t vmm_get_host_efer(void); 63 uint64_t vmm_get_host_cr0(void); 64 uint64_t vmm_get_host_cr4(void); 65 uint64_t vmm_get_host_xcr0(void); 66 uint64_t vmm_get_host_datasel(void); 67 uint64_t vmm_get_host_codesel(void); 68 uint64_t vmm_get_host_tsssel(void); 69 uint64_t vmm_get_host_fsbase(void); 70 uint64_t vmm_get_host_idtrbase(void); 71 const struct xsave_limits *vmm_get_xsave_limits(void); 72 73 /* 74 * Inline access to host state that is used on every VM entry 75 */ 76 static __inline uint64_t 77 vmm_get_host_trbase(void) 78 { 79 return ((uint64_t)CPU->cpu_tss); 80 } 81 82 static __inline uint64_t 83 vmm_get_host_gdtrbase(void) 84 { 85 86 #ifdef __FreeBSD__ 87 return ((uint64_t)*PCPU_PTR(gdt)); 88 #else 89 desctbr_t gdtr; 90 91 rd_gdtr(&gdtr); 92 return (gdtr.dtr_base); 93 #endif 94 } 95 96 static __inline uint64_t 97 vmm_get_host_gsbase(void) 98 { 99 100 #ifdef __FreeBSD__ 101 return ((uint64_t)get_pcpu()); 102 #else 103 return (rdmsr(MSR_GSBASE)); 104 #endif 105 } 106 107 #ifndef __FreeBSD__ 108 static __inline uint64_t 109 vmm_get_host_fssel(void) 110 { 111 return (KFS_SEL); 112 } 113 114 static __inline uint64_t 115 vmm_get_host_gssel(void) 116 { 117 return (KGS_SEL); 118 } 119 #endif 120 #endif 121