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 #define GUEST_MSR_MAX_ENTRIES 64 /* arbitrary */ 37 38 struct vmxctx { 39 register_t tmpstk[32]; /* vmx_return() stack */ 40 register_t tmpstktop; 41 42 register_t guest_rdi; /* Guest state */ 43 register_t guest_rsi; 44 register_t guest_rdx; 45 register_t guest_rcx; 46 register_t guest_r8; 47 register_t guest_r9; 48 register_t guest_rax; 49 register_t guest_rbx; 50 register_t guest_rbp; 51 register_t guest_r10; 52 register_t guest_r11; 53 register_t guest_r12; 54 register_t guest_r13; 55 register_t guest_r14; 56 register_t guest_r15; 57 register_t guest_cr2; 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_rip; 67 /* 68 * XXX todo debug registers and fpu state 69 */ 70 71 int launched; /* vmcs launch state */ 72 int launch_error; 73 74 long eptgen[MAXCPU]; /* cached pmap->pm_eptgen */ 75 76 /* 77 * The 'eptp' and the 'pmap' do not change during the lifetime of 78 * the VM so it is safe to keep a copy in each vcpu's vmxctx. 79 */ 80 vm_paddr_t eptp; 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 int lastcpu; /* host cpu that this 'vcpu' last ran on */ 92 uint16_t vpid; 93 }; 94 95 /* virtual machine softc */ 96 struct vmx { 97 struct vmcs vmcs[VM_MAXCPU]; /* one vmcs per virtual cpu */ 98 char msr_bitmap[PAGE_SIZE]; 99 struct msr_entry guest_msrs[VM_MAXCPU][GUEST_MSR_MAX_ENTRIES]; 100 struct vmxctx ctx[VM_MAXCPU]; 101 struct vmxcap cap[VM_MAXCPU]; 102 struct vmxstate state[VM_MAXCPU]; 103 uint64_t eptp; 104 struct vm *vm; 105 }; 106 CTASSERT((offsetof(struct vmx, vmcs) & PAGE_MASK) == 0); 107 CTASSERT((offsetof(struct vmx, msr_bitmap) & PAGE_MASK) == 0); 108 CTASSERT((offsetof(struct vmx, guest_msrs) & 15) == 0); 109 110 #define VMX_RETURN_DIRECT 0 111 #define VMX_RETURN_LONGJMP 1 112 #define VMX_RETURN_VMRESUME 2 113 #define VMX_RETURN_VMLAUNCH 3 114 #define VMX_RETURN_AST 4 115 #define VMX_RETURN_INVEPT 5 116 /* 117 * vmx_setjmp() returns: 118 * - 0 when it returns directly 119 * - 1 when it returns from vmx_longjmp 120 * - 2 when it returns from vmx_resume (which would only be in the error case) 121 * - 3 when it returns from vmx_launch (which would only be in the error case) 122 * - 4 when it returns from vmx_resume or vmx_launch because of AST pending 123 * - 5 when it returns from vmx_launch/vmx_resume because of invept error 124 */ 125 int vmx_setjmp(struct vmxctx *ctx); 126 void vmx_longjmp(void); /* returns via vmx_setjmp */ 127 void vmx_launch(struct vmxctx *ctx) __dead2; /* may return via vmx_setjmp */ 128 void vmx_resume(struct vmxctx *ctx) __dead2; /* may return via vmx_setjmp */ 129 130 u_long vmx_fix_cr0(u_long cr0); 131 u_long vmx_fix_cr4(u_long cr4); 132 133 #endif 134