1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2012 NetApp, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _VMM_HOST_H_ 32 #define _VMM_HOST_H_ 33 34 #ifndef _KERNEL 35 #error "no user-serviceable parts inside" 36 #endif 37 38 struct xsave_limits { 39 int xsave_enabled; 40 uint64_t xcr0_allowed; 41 uint32_t xsave_max_size; 42 }; 43 44 void vmm_host_state_init(void); 45 46 uint64_t vmm_get_host_pat(void); 47 uint64_t vmm_get_host_efer(void); 48 uint64_t vmm_get_host_cr0(void); 49 uint64_t vmm_get_host_cr4(void); 50 uint64_t vmm_get_host_xcr0(void); 51 uint64_t vmm_get_host_datasel(void); 52 uint64_t vmm_get_host_codesel(void); 53 uint64_t vmm_get_host_tsssel(void); 54 uint64_t vmm_get_host_fsbase(void); 55 uint64_t vmm_get_host_idtrbase(void); 56 const struct xsave_limits *vmm_get_xsave_limits(void); 57 58 /* 59 * Inline access to host state that is used on every VM entry 60 */ 61 static __inline uint64_t 62 vmm_get_host_trbase(void) 63 { 64 65 return ((uint64_t)PCPU_GET(tssp)); 66 } 67 68 static __inline uint64_t 69 vmm_get_host_gdtrbase(void) 70 { 71 72 return ((uint64_t)&gdt[NGDT * curcpu]); 73 } 74 75 static __inline uint64_t 76 vmm_get_host_gsbase(void) 77 { 78 79 return ((uint64_t)get_pcpu()); 80 } 81 82 #endif 83