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11859 need swapgs mitigation
Reviewed by: Robert Mustacchi <rm@fingolfin.org>
Reviewed by: Dan McDonald <danmcd@joyent.com>
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Robert Mustacchi <rm@fingolfin.org>
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--- old/usr/src/uts/intel/sys/archsystm.h
+++ new/usr/src/uts/intel/sys/archsystm.h
1 1 /*
2 2 * CDDL HEADER START
3 3 *
4 4 * The contents of this file are subject to the terms of the
5 5 * Common Development and Distribution License (the "License").
6 6 * You may not use this file except in compliance with the License.
7 7 *
8 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 9 * or http://www.opensolaris.org/os/licensing.
10 10 * See the License for the specific language governing permissions
11 11 * and limitations under the License.
12 12 *
13 13 * When distributing Covered Code, include this CDDL HEADER in each
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14 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 15 * If applicable, add the following below this CDDL HEADER, with the
16 16 * fields enclosed by brackets "[]" replaced with your own identifying
17 17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 18 *
19 19 * CDDL HEADER END
20 20 */
21 21
22 22 /*
23 23 * Copyright (c) 1993, 2010, Oracle and/or its affiliates. All rights reserved.
24 - * Copyright 2018 Joyent, Inc.
24 + * Copyright 2019 Joyent, Inc.
25 25 */
26 26
27 27 #ifndef _SYS_ARCHSYSTM_H
28 28 #define _SYS_ARCHSYSTM_H
29 29
30 30 /*
31 31 * A selection of ISA-dependent interfaces
32 32 */
33 33
34 34 #include <vm/seg_enum.h>
35 35 #include <vm/page.h>
36 36
37 37 #ifdef __cplusplus
38 38 extern "C" {
39 39 #endif
40 40
41 41 #ifdef _KERNEL
42 42
43 43 extern greg_t getfp(void);
44 44 extern int getpil(void);
45 45
46 46 extern ulong_t getcr0(void);
47 47 extern void setcr0(ulong_t);
48 48 extern ulong_t getcr8(void);
49 49 extern void setcr8(ulong_t);
50 50 extern ulong_t getcr2(void);
51 51 extern void clflush_insn(caddr_t addr);
52 52 extern void mfence_insn(void);
53 53
54 54 #if defined(__i386)
55 55 extern uint16_t getgs(void);
56 56 extern void setgs(uint16_t);
57 57
58 58 #endif
59 59
60 60 extern kmem_cache_t *fpsave_cachep;
61 61
62 62 extern void cli(void);
63 63 extern void sti(void);
64 64
65 65 extern void tenmicrosec(void);
66 66
67 67 extern void restore_int_flag(ulong_t);
68 68 extern void intr_restore(ulong_t);
69 69 extern ulong_t clear_int_flag(void);
70 70 extern ulong_t intr_clear(void);
71 71 extern ulong_t getflags(void);
72 72 extern int interrupts_enabled(void);
73 73
74 74 extern void int3(void);
75 75 extern void int18(void);
76 76 extern void int20(void);
77 77 extern void int_cmci(void);
78 78
79 79 #if defined(__amd64)
80 80 extern void sys_syscall(), tr_sys_syscall();
81 81 extern void sys_syscall32(), tr_sys_syscall32();
82 82 extern void sys_lcall32();
83 83 extern void sys_syscall_int();
84 84 extern void tr_sys_syscall_int();
85 85 extern void brand_sys_syscall(), tr_brand_sys_syscall();
86 86 extern void brand_sys_syscall32(), tr_brand_sys_syscall32();
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87 87 extern void brand_sys_syscall_int(), tr_brand_sys_syscall_int();
88 88 extern int update_sregs();
89 89 extern void reset_sregs();
90 90 #elif defined(__i386)
91 91 extern void sys_call();
92 92 extern void tr_sys_call();
93 93 extern void brand_sys_call();
94 94 #endif
95 95 extern void sys_sysenter();
96 96 extern void tr_sys_sysenter();
97 -extern void _sys_sysenter_post_swapgs();
98 97 extern void brand_sys_sysenter();
99 98 extern void tr_brand_sys_sysenter();
100 -extern void _brand_sys_sysenter_post_swapgs();
101 99
102 100 extern void dosyscall(void);
103 101
104 102 extern void bind_hwcap(void);
105 103
106 104 extern uint16_t inw(int port);
107 105 extern uint32_t inl(int port);
108 106 extern void outw(int port, uint16_t value);
109 107 extern void outl(int port, uint32_t value);
110 108
111 109 extern void pc_reset(void) __NORETURN;
112 110 extern void efi_reset(void) __NORETURN;
113 111 extern void reset(void) __NORETURN;
114 112 extern int goany(void);
115 113
116 114 extern void setgregs(klwp_t *, gregset_t);
117 115 extern void getgregs(klwp_t *, gregset_t);
118 116 extern void setfpregs(klwp_t *, fpregset_t *);
119 117 extern void getfpregs(klwp_t *, fpregset_t *);
120 118
121 119 #if defined(_SYSCALL32_IMPL)
122 120 extern void getgregs32(klwp_t *, gregset32_t);
123 121 extern void setfpregs32(klwp_t *, fpregset32_t *);
124 122 extern void getfpregs32(klwp_t *, fpregset32_t *);
125 123 #endif
126 124
127 125 struct fpu_ctx;
128 126
129 127 extern void fp_free(struct fpu_ctx *, int);
130 128 extern void fp_save(struct fpu_ctx *);
131 129 extern void fp_restore(struct fpu_ctx *);
132 130
133 131 extern int fpu_pentium_fdivbug;
134 132
135 133 extern void sep_save(void *);
136 134 extern void sep_restore(void *);
137 135
138 136 extern void brand_interpositioning_enable(void);
139 137 extern void brand_interpositioning_disable(void);
140 138
141 139 struct regs;
142 140
143 141 extern int instr_size(struct regs *, caddr_t *, enum seg_rw);
144 142
145 143 extern int enable_cbcp; /* patchable in /etc/system */
146 144
147 145 extern uint_t cpu_hwcap_flags;
148 146 extern uint_t cpu_freq;
149 147 extern uint64_t cpu_freq_hz;
150 148
151 149 extern int use_sse_pagecopy;
152 150 extern int use_sse_pagezero;
153 151 extern int use_sse_copy;
154 152
155 153 extern caddr_t i86devmap(pfn_t, pgcnt_t, uint_t);
156 154 extern page_t *page_numtopp_alloc(pfn_t pfnum);
157 155
158 156 extern void hwblkclr(void *, size_t);
159 157 extern void hwblkpagecopy(const void *, void *);
160 158 extern void page_copy_no_xmm(void *dst, void *src);
161 159 extern void block_zero_no_xmm(void *dst, int len);
162 160 #define BLOCKZEROALIGN (4 * sizeof (void *))
163 161
164 162 extern void (*kcpc_hw_enable_cpc_intr)(void);
165 163
166 164 extern void init_desctbls(void);
167 165
168 166 extern user_desc_t *cpu_get_gdt(void);
169 167
170 168 extern void switch_sp_and_call(void *, void (*)(uint_t, uint_t), uint_t,
171 169 uint_t);
172 170 extern hrtime_t (*gethrtimef)(void);
173 171 extern hrtime_t (*gethrtimeunscaledf)(void);
174 172 extern void (*scalehrtimef)(hrtime_t *);
175 173 extern uint64_t (*unscalehrtimef)(hrtime_t);
176 174 extern void (*gethrestimef)(timestruc_t *);
177 175
178 176 extern void av_dispatch_softvect(uint_t);
179 177 extern void av_dispatch_autovect(uint_t);
180 178 extern uint_t atomic_btr32(uint32_t *, uint_t);
181 179 extern uint_t bsrw_insn(uint16_t);
182 180 extern int sys_rtt_common(struct regs *);
183 181 extern void fakesoftint(void);
184 182
185 183 extern void *plat_traceback(void *);
186 184
187 185 /*
188 186 * The following two macros are the four byte instruction sequence of stac, ret
189 187 * and clac, ret. These are used in startup_smap() as a part of properly setting
190 188 * up the valid instructions. For more information on SMAP, see
191 189 * uts/intel/ia32/ml/copy.s.
192 190 */
193 191 #define SMAP_CLAC_INSTR 0xc3ca010f
194 192 #define SMAP_STAC_INSTR 0xc3cb010f
195 193 extern void smap_disable(void);
196 194 extern void smap_enable(void);
197 195
198 196 #if defined(__xpv)
199 197 extern void xen_init_callbacks(void);
200 198 extern void xen_set_callback(void (*)(void), uint_t, uint_t);
201 199 extern void xen_printf(const char *, ...);
202 200 #define cpr_dprintf xen_printf
203 201 extern int xpv_panicking;
204 202 #define IN_XPV_PANIC() (xpv_panicking > 0)
205 203 #else
206 204 extern void setup_mca(void);
207 205 extern void pat_sync(void);
208 206 extern void patch_tsc_read(int);
209 207 #if defined(__amd64) && !defined(__xpv)
210 208 extern void patch_memops(uint_t);
211 209 #endif /* defined(__amd64) && !defined(__xpv) */
212 210 extern void setup_xfem(void);
213 211 #define cpr_dprintf prom_printf
214 212 #define IN_XPV_PANIC() (__lintzero)
215 213 #endif
216 214
217 215 #endif /* _KERNEL */
218 216
219 217 #if defined(_KERNEL) || defined(_BOOT)
220 218 extern uint8_t inb(int port);
221 219 extern void outb(int port, uint8_t value);
222 220 #endif
223 221
224 222 #ifdef __cplusplus
225 223 }
226 224 #endif
227 225
228 226 #endif /* _SYS_ARCHSYSTM_H */
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