vmx.h revision 256072
1221828Sgrehan/*- 2221828Sgrehan * Copyright (c) 2011 NetApp, Inc. 3221828Sgrehan * All rights reserved. 4221828Sgrehan * 5221828Sgrehan * Redistribution and use in source and binary forms, with or without 6221828Sgrehan * modification, are permitted provided that the following conditions 7221828Sgrehan * are met: 8221828Sgrehan * 1. Redistributions of source code must retain the above copyright 9221828Sgrehan * notice, this list of conditions and the following disclaimer. 10221828Sgrehan * 2. Redistributions in binary form must reproduce the above copyright 11221828Sgrehan * notice, this list of conditions and the following disclaimer in the 12221828Sgrehan * documentation and/or other materials provided with the distribution. 13221828Sgrehan * 14221828Sgrehan * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 15221828Sgrehan * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16221828Sgrehan * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17221828Sgrehan * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 18221828Sgrehan * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19221828Sgrehan * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20221828Sgrehan * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21221828Sgrehan * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22221828Sgrehan * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23221828Sgrehan * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24221828Sgrehan * SUCH DAMAGE. 25221828Sgrehan * 26221828Sgrehan * $FreeBSD: head/sys/amd64/vmm/intel/vmx.h 256072 2013-10-05 21:22:35Z neel $ 27221828Sgrehan */ 28221828Sgrehan 29221828Sgrehan#ifndef _VMX_H_ 30221828Sgrehan#define _VMX_H_ 31221828Sgrehan 32221828Sgrehan#include "vmcs.h" 33221828Sgrehan 34256072Sneelstruct pmap; 35256072Sneel 36221828Sgrehan#define GUEST_MSR_MAX_ENTRIES 64 /* arbitrary */ 37221828Sgrehan 38221828Sgrehanstruct vmxctx { 39222112Sneel register_t tmpstk[32]; /* vmx_return() stack */ 40222112Sneel register_t tmpstktop; 41222112Sneel 42221828Sgrehan register_t guest_rdi; /* Guest state */ 43221828Sgrehan register_t guest_rsi; 44221828Sgrehan register_t guest_rdx; 45221828Sgrehan register_t guest_rcx; 46221828Sgrehan register_t guest_r8; 47221828Sgrehan register_t guest_r9; 48221828Sgrehan register_t guest_rax; 49221828Sgrehan register_t guest_rbx; 50221828Sgrehan register_t guest_rbp; 51221828Sgrehan register_t guest_r10; 52221828Sgrehan register_t guest_r11; 53221828Sgrehan register_t guest_r12; 54221828Sgrehan register_t guest_r13; 55221828Sgrehan register_t guest_r14; 56221828Sgrehan register_t guest_r15; 57221828Sgrehan register_t guest_cr2; 58221828Sgrehan 59221828Sgrehan register_t host_r15; /* Host state */ 60221828Sgrehan register_t host_r14; 61221828Sgrehan register_t host_r13; 62221828Sgrehan register_t host_r12; 63221828Sgrehan register_t host_rbp; 64221828Sgrehan register_t host_rsp; 65221828Sgrehan register_t host_rbx; 66221828Sgrehan register_t host_rip; 67221828Sgrehan /* 68221828Sgrehan * XXX todo debug registers and fpu state 69221828Sgrehan */ 70221828Sgrehan 71222112Sneel int launched; /* vmcs launch state */ 72221828Sgrehan int launch_error; 73256072Sneel 74256072Sneel long eptgen[MAXCPU]; /* cached pmap->pm_eptgen */ 75256072Sneel 76256072Sneel /* 77256072Sneel * The 'eptp' and the 'pmap' do not change during the lifetime of 78256072Sneel * the VM so it is safe to keep a copy in each vcpu's vmxctx. 79256072Sneel */ 80256072Sneel vm_paddr_t eptp; 81256072Sneel struct pmap *pmap; 82221828Sgrehan}; 83221828Sgrehan 84221828Sgrehanstruct vmxcap { 85221828Sgrehan int set; 86221828Sgrehan uint32_t proc_ctls; 87221828Sgrehan}; 88221828Sgrehan 89221828Sgrehanstruct vmxstate { 90221828Sgrehan int lastcpu; /* host cpu that this 'vcpu' last ran on */ 91221828Sgrehan uint16_t vpid; 92221828Sgrehan}; 93221828Sgrehan 94221828Sgrehan/* virtual machine softc */ 95221828Sgrehanstruct vmx { 96221828Sgrehan struct vmcs vmcs[VM_MAXCPU]; /* one vmcs per virtual cpu */ 97221828Sgrehan char msr_bitmap[PAGE_SIZE]; 98221828Sgrehan struct msr_entry guest_msrs[VM_MAXCPU][GUEST_MSR_MAX_ENTRIES]; 99221828Sgrehan struct vmxctx ctx[VM_MAXCPU]; 100221828Sgrehan struct vmxcap cap[VM_MAXCPU]; 101221828Sgrehan struct vmxstate state[VM_MAXCPU]; 102256072Sneel uint64_t eptp; 103221828Sgrehan struct vm *vm; 104221828Sgrehan}; 105221828SgrehanCTASSERT((offsetof(struct vmx, vmcs) & PAGE_MASK) == 0); 106221828SgrehanCTASSERT((offsetof(struct vmx, msr_bitmap) & PAGE_MASK) == 0); 107221828SgrehanCTASSERT((offsetof(struct vmx, guest_msrs) & 15) == 0); 108221828Sgrehan 109221828Sgrehan#define VMX_RETURN_DIRECT 0 110221828Sgrehan#define VMX_RETURN_LONGJMP 1 111221828Sgrehan#define VMX_RETURN_VMRESUME 2 112221828Sgrehan#define VMX_RETURN_VMLAUNCH 3 113241921Sneel#define VMX_RETURN_AST 4 114256072Sneel#define VMX_RETURN_INVEPT 5 115221828Sgrehan/* 116221828Sgrehan * vmx_setjmp() returns: 117221828Sgrehan * - 0 when it returns directly 118221828Sgrehan * - 1 when it returns from vmx_longjmp 119221828Sgrehan * - 2 when it returns from vmx_resume (which would only be in the error case) 120221828Sgrehan * - 3 when it returns from vmx_launch (which would only be in the error case) 121241921Sneel * - 4 when it returns from vmx_resume or vmx_launch because of AST pending 122256072Sneel * - 5 when it returns from vmx_launch/vmx_resume because of invept error 123221828Sgrehan */ 124221828Sgrehanint vmx_setjmp(struct vmxctx *ctx); 125221828Sgrehanvoid vmx_longjmp(void); /* returns via vmx_setjmp */ 126221828Sgrehanvoid vmx_launch(struct vmxctx *ctx) __dead2; /* may return via vmx_setjmp */ 127221828Sgrehanvoid vmx_resume(struct vmxctx *ctx) __dead2; /* may return via vmx_setjmp */ 128221828Sgrehan 129221828Sgrehanu_long vmx_fix_cr0(u_long cr0); 130221828Sgrehanu_long vmx_fix_cr4(u_long cr4); 131221828Sgrehan 132221828Sgrehan#endif 133