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 * $FreeBSD$ 27 */ 28 29 #ifndef _VMX_H_ 30 #define _VMX_H_ 31 32 #include "vmcs.h" 33 34 struct pmap; 35 36 struct vmxctx { 37 register_t guest_rdi; /* Guest state */ 38 register_t guest_rsi; 39 register_t guest_rdx; 40 register_t guest_rcx; 41 register_t guest_r8; 42 register_t guest_r9; 43 register_t guest_rax; 44 register_t guest_rbx; 45 register_t guest_rbp; 46 register_t guest_r10; 47 register_t guest_r11; 48 register_t guest_r12; 49 register_t guest_r13; 50 register_t guest_r14; 51 register_t guest_r15; 52 register_t guest_cr2; 53 register_t guest_dr0; 54 register_t guest_dr1; 55 register_t guest_dr2; 56 register_t guest_dr3; 57 register_t guest_dr6; 58 59 register_t host_r15; /* Host state */ 60 register_t host_r14; 61 register_t host_r13; 62 register_t host_r12; 63 register_t host_rbp; 64 register_t host_rsp; 65 register_t host_rbx; 66 register_t host_dr0; 67 register_t host_dr1; 68 register_t host_dr2; 69 register_t host_dr3; 70 register_t host_dr6; 71 register_t host_dr7; 72 uint64_t host_debugctl; 73 int host_tf; 74 75 int inst_fail_status; 76 77 /* 78 * The pmap needs to be deactivated in vmx_enter_guest() 79 * so keep a copy of the 'pmap' in each vmxctx. 80 */ 81 struct pmap *pmap; 82 }; 83 84 struct vmxcap { 85 int set; 86 uint32_t proc_ctls; 87 uint32_t proc_ctls2; 88 }; 89 90 struct vmxstate { 91 uint64_t nextrip; /* next instruction to be executed by guest */ 92 int lastcpu; /* host cpu that this 'vcpu' last ran on */ 93 uint16_t vpid; 94 }; 95 96 struct apic_page { 97 uint32_t reg[PAGE_SIZE / 4]; 98 }; 99 CTASSERT(sizeof(struct apic_page) == PAGE_SIZE); 100 101 /* Posted Interrupt Descriptor (described in section 29.6 of the Intel SDM) */ 102 struct pir_desc { 103 uint64_t pir[4]; 104 uint64_t pending; 105 uint64_t unused[3]; 106 } __aligned(64); 107 CTASSERT(sizeof(struct pir_desc) == 64); 108 109 /* Index into the 'guest_msrs[]' array */ 110 enum { 111 IDX_MSR_LSTAR, 112 IDX_MSR_CSTAR, 113 IDX_MSR_STAR, 114 IDX_MSR_SF_MASK, 115 IDX_MSR_KGSBASE, 116 IDX_MSR_PAT, 117 GUEST_MSR_NUM /* must be the last enumeration */ 118 }; 119 120 /* virtual machine softc */ 121 struct vmx { 122 struct vmcs vmcs[VM_MAXCPU]; /* one vmcs per virtual cpu */ 123 struct apic_page apic_page[VM_MAXCPU]; /* one apic page per vcpu */ 124 char msr_bitmap[PAGE_SIZE]; 125 struct pir_desc pir_desc[VM_MAXCPU]; 126 uint64_t guest_msrs[VM_MAXCPU][GUEST_MSR_NUM]; 127 struct vmxctx ctx[VM_MAXCPU]; 128 struct vmxcap cap[VM_MAXCPU]; 129 struct vmxstate state[VM_MAXCPU]; 130 uint64_t eptp; 131 struct vm *vm; 132 long eptgen[MAXCPU]; /* cached pmap->pm_eptgen */ 133 }; 134 CTASSERT((offsetof(struct vmx, vmcs) & PAGE_MASK) == 0); 135 CTASSERT((offsetof(struct vmx, msr_bitmap) & PAGE_MASK) == 0); 136 CTASSERT((offsetof(struct vmx, pir_desc[0]) & 63) == 0); 137 138 #define VMX_GUEST_VMEXIT 0 139 #define VMX_VMRESUME_ERROR 1 140 #define VMX_VMLAUNCH_ERROR 2 141 #define VMX_INVEPT_ERROR 3 142 int vmx_enter_guest(struct vmxctx *ctx, struct vmx *vmx, int launched); 143 void vmx_call_isr(uintptr_t entry); 144 145 u_long vmx_fix_cr0(u_long cr0); 146 u_long vmx_fix_cr4(u_long cr4); 147 148 int vmx_set_tsc_offset(struct vmx *vmx, int vcpu, uint64_t offset); 149 150 extern char vmx_exit_guest[]; 151 extern char vmx_exit_guest_flush_rsb[]; 152 153 #endif 154