1 /*- 2 * Copyright (c) 2012 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 _VMM_HOST_H_ 30 #define _VMM_HOST_H_ 31 32 #ifndef _KERNEL 33 #error "no user-servicable parts inside" 34 #endif 35 36 struct xsave_limits { 37 int xsave_enabled; 38 uint64_t xcr0_allowed; 39 uint32_t xsave_max_size; 40 }; 41 42 void vmm_host_state_init(void); 43 44 uint64_t vmm_get_host_pat(void); 45 uint64_t vmm_get_host_efer(void); 46 uint64_t vmm_get_host_cr0(void); 47 uint64_t vmm_get_host_cr4(void); 48 uint64_t vmm_get_host_xcr0(void); 49 uint64_t vmm_get_host_datasel(void); 50 uint64_t vmm_get_host_codesel(void); 51 uint64_t vmm_get_host_tsssel(void); 52 uint64_t vmm_get_host_fsbase(void); 53 uint64_t vmm_get_host_idtrbase(void); 54 const struct xsave_limits *vmm_get_xsave_limits(void); 55 56 /* 57 * Inline access to host state that is used on every VM entry 58 */ 59 static __inline uint64_t 60 vmm_get_host_trbase(void) 61 { 62 63 return ((uint64_t)PCPU_GET(tssp)); 64 } 65 66 static __inline uint64_t 67 vmm_get_host_gdtrbase(void) 68 { 69 70 return ((uint64_t)&gdt[NGDT * curcpu]); 71 } 72 73 struct pcpu; 74 extern struct pcpu __pcpu[]; 75 76 static __inline uint64_t 77 vmm_get_host_gsbase(void) 78 { 79 80 return ((uint64_t)&__pcpu[curcpu]); 81 } 82 83 #endif 84