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 54 register_t host_r15; /* Host state */ 55 register_t host_r14; 56 register_t host_r13; 57 register_t host_r12; 58 register_t host_rbp; 59 register_t host_rsp; 60 register_t host_rbx; 61 /* 62 * XXX todo debug registers and fpu state 63 */ 64 65 int inst_fail_status; 66 67 /* 68 * The pmap needs to be deactivated in vmx_enter_guest() 69 * so keep a copy of the 'pmap' in each vmxctx. 70 */ 71 struct pmap *pmap; 72 }; 73 74 struct vmxcap { 75 int set; 76 uint32_t proc_ctls; 77 uint32_t proc_ctls2; 78 }; 79 80 struct vmxstate { 81 uint64_t nextrip; /* next instruction to be executed by guest */ 82 int lastcpu; /* host cpu that this 'vcpu' last ran on */ 83 uint16_t vpid; 84 }; 85 86 struct apic_page { 87 uint32_t reg[PAGE_SIZE / 4]; 88 }; 89 CTASSERT(sizeof(struct apic_page) == PAGE_SIZE); 90 91 /* Posted Interrupt Descriptor (described in section 29.6 of the Intel SDM) */ 92 struct pir_desc { 93 uint64_t pir[4]; 94 uint64_t pending; 95 uint64_t unused[3]; 96 } __aligned(64); 97 CTASSERT(sizeof(struct pir_desc) == 64); 98 99 /* Index into the 'guest_msrs[]' array */ 100 enum { 101 IDX_MSR_LSTAR, 102 IDX_MSR_CSTAR, 103 IDX_MSR_STAR, 104 IDX_MSR_SF_MASK, 105 IDX_MSR_KGSBASE, 106 IDX_MSR_PAT, 107 GUEST_MSR_NUM /* must be the last enumeration */ 108 }; 109 110 /* virtual machine softc */ 111 struct vmx { 112 struct vmcs vmcs[VM_MAXCPU]; /* one vmcs per virtual cpu */ 113 struct apic_page apic_page[VM_MAXCPU]; /* one apic page per vcpu */ 114 char msr_bitmap[PAGE_SIZE]; 115 struct pir_desc pir_desc[VM_MAXCPU]; 116 uint64_t guest_msrs[VM_MAXCPU][GUEST_MSR_NUM]; 117 struct vmxctx ctx[VM_MAXCPU]; 118 struct vmxcap cap[VM_MAXCPU]; 119 struct vmxstate state[VM_MAXCPU]; 120 uint64_t eptp; 121 struct vm *vm; 122 long eptgen[MAXCPU]; /* cached pmap->pm_eptgen */ 123 }; 124 CTASSERT((offsetof(struct vmx, vmcs) & PAGE_MASK) == 0); 125 CTASSERT((offsetof(struct vmx, msr_bitmap) & PAGE_MASK) == 0); 126 CTASSERT((offsetof(struct vmx, pir_desc[0]) & 63) == 0); 127 128 #define VMX_GUEST_VMEXIT 0 129 #define VMX_VMRESUME_ERROR 1 130 #define VMX_VMLAUNCH_ERROR 2 131 #define VMX_INVEPT_ERROR 3 132 int vmx_enter_guest(struct vmxctx *ctx, struct vmx *vmx, int launched); 133 void vmx_call_isr(uintptr_t entry); 134 135 u_long vmx_fix_cr0(u_long cr0); 136 u_long vmx_fix_cr4(u_long cr4); 137 138 extern char vmx_exit_guest[]; 139 140 #endif 141