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53aaf262 TG |
1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _ASM_X86_IDTENTRY_H | |
3 | #define _ASM_X86_IDTENTRY_H | |
4 | ||
5 | /* Interrupts/Exceptions */ | |
6 | #include <asm/trapnr.h> | |
7 | ||
8 | #ifndef __ASSEMBLY__ | |
27d6b4d1 | 9 | #include <linux/entry-common.h> |
6368558c TG |
10 | #include <linux/hardirq.h> |
11 | ||
12 | #include <asm/irq_stack.h> | |
53aaf262 TG |
13 | |
14 | /** | |
15 | * DECLARE_IDTENTRY - Declare functions for simple IDT entry points | |
16 | * No error code pushed by hardware | |
17 | * @vector: Vector number (ignored for C) | |
18 | * @func: Function name of the entry point | |
19 | * | |
20 | * Declares three functions: | |
21 | * - The ASM entry point: asm_##func | |
22 | * - The XEN PV trap entry point: xen_##func (maybe unused) | |
23 | * - The C handler called from the ASM entry point | |
24 | * | |
25 | * Note: This is the C variant of DECLARE_IDTENTRY(). As the name says it | |
26 | * declares the entry points for usage in C code. There is an ASM variant | |
27 | * as well which is used to emit the entry stubs in entry_32/64.S. | |
28 | */ | |
29 | #define DECLARE_IDTENTRY(vector, func) \ | |
30 | asmlinkage void asm_##func(void); \ | |
31 | asmlinkage void xen_asm_##func(void); \ | |
32 | __visible void func(struct pt_regs *regs) | |
33 | ||
34 | /** | |
35 | * DEFINE_IDTENTRY - Emit code for simple IDT entry points | |
36 | * @func: Function name of the entry point | |
37 | * | |
38 | * @func is called from ASM entry code with interrupts disabled. | |
39 | * | |
40 | * The macro is written so it acts as function definition. Append the | |
41 | * body with a pair of curly brackets. | |
42 | * | |
a27a0a55 TG |
43 | * irqentry_enter() contains common code which has to be invoked before |
44 | * arbitrary code in the body. irqentry_exit() contains common code | |
53aaf262 TG |
45 | * which has to run before returning to the low level assembly code. |
46 | */ | |
47 | #define DEFINE_IDTENTRY(func) \ | |
48 | static __always_inline void __##func(struct pt_regs *regs); \ | |
49 | \ | |
50 | __visible noinstr void func(struct pt_regs *regs) \ | |
51 | { \ | |
a27a0a55 | 52 | irqentry_state_t state = irqentry_enter(regs); \ |
fa95d7dc | 53 | \ |
53aaf262 TG |
54 | instrumentation_begin(); \ |
55 | __##func (regs); \ | |
56 | instrumentation_end(); \ | |
a27a0a55 | 57 | irqentry_exit(regs, state); \ |
53aaf262 TG |
58 | } \ |
59 | \ | |
60 | static __always_inline void __##func(struct pt_regs *regs) | |
61 | ||
d7729050 TG |
62 | /* Special case for 32bit IRET 'trap' */ |
63 | #define DECLARE_IDTENTRY_SW DECLARE_IDTENTRY | |
64 | #define DEFINE_IDTENTRY_SW DEFINE_IDTENTRY | |
65 | ||
aabfe538 TG |
66 | /** |
67 | * DECLARE_IDTENTRY_ERRORCODE - Declare functions for simple IDT entry points | |
68 | * Error code pushed by hardware | |
69 | * @vector: Vector number (ignored for C) | |
70 | * @func: Function name of the entry point | |
71 | * | |
72 | * Declares three functions: | |
73 | * - The ASM entry point: asm_##func | |
74 | * - The XEN PV trap entry point: xen_##func (maybe unused) | |
75 | * - The C handler called from the ASM entry point | |
76 | * | |
77 | * Same as DECLARE_IDTENTRY, but has an extra error_code argument for the | |
78 | * C-handler. | |
79 | */ | |
80 | #define DECLARE_IDTENTRY_ERRORCODE(vector, func) \ | |
81 | asmlinkage void asm_##func(void); \ | |
82 | asmlinkage void xen_asm_##func(void); \ | |
83 | __visible void func(struct pt_regs *regs, unsigned long error_code) | |
84 | ||
85 | /** | |
86 | * DEFINE_IDTENTRY_ERRORCODE - Emit code for simple IDT entry points | |
87 | * Error code pushed by hardware | |
88 | * @func: Function name of the entry point | |
89 | * | |
90 | * Same as DEFINE_IDTENTRY, but has an extra error_code argument | |
91 | */ | |
92 | #define DEFINE_IDTENTRY_ERRORCODE(func) \ | |
93 | static __always_inline void __##func(struct pt_regs *regs, \ | |
94 | unsigned long error_code); \ | |
95 | \ | |
96 | __visible noinstr void func(struct pt_regs *regs, \ | |
97 | unsigned long error_code) \ | |
98 | { \ | |
a27a0a55 | 99 | irqentry_state_t state = irqentry_enter(regs); \ |
fa95d7dc | 100 | \ |
aabfe538 TG |
101 | instrumentation_begin(); \ |
102 | __##func (regs, error_code); \ | |
103 | instrumentation_end(); \ | |
a27a0a55 | 104 | irqentry_exit(regs, state); \ |
aabfe538 TG |
105 | } \ |
106 | \ | |
107 | static __always_inline void __##func(struct pt_regs *regs, \ | |
108 | unsigned long error_code) | |
109 | ||
0dc6cdc2 TG |
110 | /** |
111 | * DECLARE_IDTENTRY_RAW - Declare functions for raw IDT entry points | |
112 | * No error code pushed by hardware | |
113 | * @vector: Vector number (ignored for C) | |
114 | * @func: Function name of the entry point | |
115 | * | |
116 | * Maps to DECLARE_IDTENTRY(). | |
117 | */ | |
118 | #define DECLARE_IDTENTRY_RAW(vector, func) \ | |
119 | DECLARE_IDTENTRY(vector, func) | |
120 | ||
121 | /** | |
122 | * DEFINE_IDTENTRY_RAW - Emit code for raw IDT entry points | |
123 | * @func: Function name of the entry point | |
124 | * | |
125 | * @func is called from ASM entry code with interrupts disabled. | |
126 | * | |
127 | * The macro is written so it acts as function definition. Append the | |
128 | * body with a pair of curly brackets. | |
129 | * | |
130 | * Contrary to DEFINE_IDTENTRY() this does not invoke the | |
131 | * idtentry_enter/exit() helpers before and after the body invocation. This | |
132 | * needs to be done in the body itself if applicable. Use if extra work | |
133 | * is required before the enter/exit() helpers are invoked. | |
134 | */ | |
135 | #define DEFINE_IDTENTRY_RAW(func) \ | |
136 | __visible noinstr void func(struct pt_regs *regs) | |
137 | ||
6a8dfa8e TG |
138 | /** |
139 | * DECLARE_IDTENTRY_RAW_ERRORCODE - Declare functions for raw IDT entry points | |
140 | * Error code pushed by hardware | |
141 | * @vector: Vector number (ignored for C) | |
142 | * @func: Function name of the entry point | |
143 | * | |
144 | * Maps to DECLARE_IDTENTRY_ERRORCODE() | |
145 | */ | |
146 | #define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) \ | |
147 | DECLARE_IDTENTRY_ERRORCODE(vector, func) | |
148 | ||
149 | /** | |
150 | * DEFINE_IDTENTRY_RAW_ERRORCODE - Emit code for raw IDT entry points | |
151 | * @func: Function name of the entry point | |
152 | * | |
153 | * @func is called from ASM entry code with interrupts disabled. | |
154 | * | |
155 | * The macro is written so it acts as function definition. Append the | |
156 | * body with a pair of curly brackets. | |
157 | * | |
158 | * Contrary to DEFINE_IDTENTRY_ERRORCODE() this does not invoke the | |
a27a0a55 | 159 | * irqentry_enter/exit() helpers before and after the body invocation. This |
6a8dfa8e TG |
160 | * needs to be done in the body itself if applicable. Use if extra work |
161 | * is required before the enter/exit() helpers are invoked. | |
162 | */ | |
163 | #define DEFINE_IDTENTRY_RAW_ERRORCODE(func) \ | |
164 | __visible noinstr void func(struct pt_regs *regs, unsigned long error_code) | |
165 | ||
0bf7c314 TG |
166 | /** |
167 | * DECLARE_IDTENTRY_IRQ - Declare functions for device interrupt IDT entry | |
168 | * points (common/spurious) | |
169 | * @vector: Vector number (ignored for C) | |
170 | * @func: Function name of the entry point | |
171 | * | |
172 | * Maps to DECLARE_IDTENTRY_ERRORCODE() | |
173 | */ | |
174 | #define DECLARE_IDTENTRY_IRQ(vector, func) \ | |
175 | DECLARE_IDTENTRY_ERRORCODE(vector, func) | |
176 | ||
177 | /** | |
178 | * DEFINE_IDTENTRY_IRQ - Emit code for device interrupt IDT entry points | |
179 | * @func: Function name of the entry point | |
180 | * | |
181 | * The vector number is pushed by the low level entry stub and handed | |
182 | * to the function as error_code argument which needs to be truncated | |
183 | * to an u8 because the push is sign extending. | |
184 | * | |
0bf7c314 | 185 | * irq_enter/exit_rcu() are invoked before the function body and the |
790ce3b4 TG |
186 | * KVM L1D flush request is set. Stack switching to the interrupt stack |
187 | * has to be done in the function body if necessary. | |
0bf7c314 TG |
188 | */ |
189 | #define DEFINE_IDTENTRY_IRQ(func) \ | |
190 | static __always_inline void __##func(struct pt_regs *regs, u8 vector); \ | |
191 | \ | |
192 | __visible noinstr void func(struct pt_regs *regs, \ | |
193 | unsigned long error_code) \ | |
194 | { \ | |
a27a0a55 | 195 | irqentry_state_t state = irqentry_enter(regs); \ |
0bf7c314 TG |
196 | \ |
197 | instrumentation_begin(); \ | |
198 | irq_enter_rcu(); \ | |
199 | kvm_set_cpu_l1tf_flush_l1d(); \ | |
200 | __##func (regs, (u8)error_code); \ | |
201 | irq_exit_rcu(); \ | |
0bf7c314 | 202 | instrumentation_end(); \ |
a27a0a55 | 203 | irqentry_exit(regs, state); \ |
0bf7c314 TG |
204 | } \ |
205 | \ | |
206 | static __always_inline void __##func(struct pt_regs *regs, u8 vector) | |
207 | ||
6368558c TG |
208 | /** |
209 | * DECLARE_IDTENTRY_SYSVEC - Declare functions for system vector entry points | |
210 | * @vector: Vector number (ignored for C) | |
211 | * @func: Function name of the entry point | |
212 | * | |
213 | * Declares three functions: | |
214 | * - The ASM entry point: asm_##func | |
215 | * - The XEN PV trap entry point: xen_##func (maybe unused) | |
216 | * - The C handler called from the ASM entry point | |
217 | * | |
218 | * Maps to DECLARE_IDTENTRY(). | |
219 | */ | |
220 | #define DECLARE_IDTENTRY_SYSVEC(vector, func) \ | |
221 | DECLARE_IDTENTRY(vector, func) | |
222 | ||
223 | /** | |
224 | * DEFINE_IDTENTRY_SYSVEC - Emit code for system vector IDT entry points | |
225 | * @func: Function name of the entry point | |
226 | * | |
a27a0a55 | 227 | * irqentry_enter/exit() and irq_enter/exit_rcu() are invoked before the |
6368558c TG |
228 | * function body. KVM L1D flush request is set. |
229 | * | |
230 | * Runs the function on the interrupt stack if the entry hit kernel mode | |
231 | */ | |
232 | #define DEFINE_IDTENTRY_SYSVEC(func) \ | |
233 | static void __##func(struct pt_regs *regs); \ | |
234 | \ | |
235 | __visible noinstr void func(struct pt_regs *regs) \ | |
236 | { \ | |
a27a0a55 | 237 | irqentry_state_t state = irqentry_enter(regs); \ |
6368558c TG |
238 | \ |
239 | instrumentation_begin(); \ | |
240 | irq_enter_rcu(); \ | |
241 | kvm_set_cpu_l1tf_flush_l1d(); \ | |
a7b3474c | 242 | run_sysvec_on_irqstack_cond(__##func, regs); \ |
6368558c | 243 | irq_exit_rcu(); \ |
6368558c | 244 | instrumentation_end(); \ |
a27a0a55 | 245 | irqentry_exit(regs, state); \ |
6368558c TG |
246 | } \ |
247 | \ | |
248 | static noinline void __##func(struct pt_regs *regs) | |
249 | ||
250 | /** | |
251 | * DEFINE_IDTENTRY_SYSVEC_SIMPLE - Emit code for simple system vector IDT | |
252 | * entry points | |
253 | * @func: Function name of the entry point | |
254 | * | |
255 | * Runs the function on the interrupted stack. No switch to IRQ stack and | |
256 | * only the minimal __irq_enter/exit() handling. | |
257 | * | |
258 | * Only use for 'empty' vectors like reschedule IPI and KVM posted | |
259 | * interrupt vectors. | |
260 | */ | |
261 | #define DEFINE_IDTENTRY_SYSVEC_SIMPLE(func) \ | |
262 | static __always_inline void __##func(struct pt_regs *regs); \ | |
263 | \ | |
264 | __visible noinstr void func(struct pt_regs *regs) \ | |
265 | { \ | |
a27a0a55 | 266 | irqentry_state_t state = irqentry_enter(regs); \ |
6368558c TG |
267 | \ |
268 | instrumentation_begin(); \ | |
269 | __irq_enter_raw(); \ | |
270 | kvm_set_cpu_l1tf_flush_l1d(); \ | |
271 | __##func (regs); \ | |
272 | __irq_exit_raw(); \ | |
273 | instrumentation_end(); \ | |
a27a0a55 | 274 | irqentry_exit(regs, state); \ |
6368558c TG |
275 | } \ |
276 | \ | |
277 | static __always_inline void __##func(struct pt_regs *regs) | |
278 | ||
2f6474e4 TG |
279 | /** |
280 | * DECLARE_IDTENTRY_XENCB - Declare functions for XEN HV callback entry point | |
281 | * @vector: Vector number (ignored for C) | |
282 | * @func: Function name of the entry point | |
283 | * | |
284 | * Declares three functions: | |
285 | * - The ASM entry point: asm_##func | |
286 | * - The XEN PV trap entry point: xen_##func (maybe unused) | |
287 | * - The C handler called from the ASM entry point | |
288 | * | |
289 | * Maps to DECLARE_IDTENTRY(). Distinct entry point to handle the 32/64-bit | |
290 | * difference | |
291 | */ | |
292 | #define DECLARE_IDTENTRY_XENCB(vector, func) \ | |
293 | DECLARE_IDTENTRY(vector, func) | |
6a8dfa8e | 294 | |
2c058b03 TG |
295 | #ifdef CONFIG_X86_64 |
296 | /** | |
297 | * DECLARE_IDTENTRY_IST - Declare functions for IST handling IDT entry points | |
298 | * @vector: Vector number (ignored for C) | |
299 | * @func: Function name of the entry point | |
300 | * | |
f08e32ec TG |
301 | * Maps to DECLARE_IDTENTRY_RAW, but declares also the NOIST C handler |
302 | * which is called from the ASM entry point on user mode entry | |
2c058b03 TG |
303 | */ |
304 | #define DECLARE_IDTENTRY_IST(vector, func) \ | |
f08e32ec TG |
305 | DECLARE_IDTENTRY_RAW(vector, func); \ |
306 | __visible void noist_##func(struct pt_regs *regs) | |
2c058b03 | 307 | |
a13644f3 JR |
308 | /** |
309 | * DECLARE_IDTENTRY_VC - Declare functions for the VC entry point | |
310 | * @vector: Vector number (ignored for C) | |
311 | * @func: Function name of the entry point | |
312 | * | |
313 | * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE, but declares also the | |
314 | * safe_stack C handler. | |
315 | */ | |
316 | #define DECLARE_IDTENTRY_VC(vector, func) \ | |
317 | DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func); \ | |
0786138c | 318 | __visible noinstr void ist_##func(struct pt_regs *regs, unsigned long error_code); \ |
a13644f3 JR |
319 | __visible noinstr void safe_stack_##func(struct pt_regs *regs, unsigned long error_code) |
320 | ||
2c058b03 TG |
321 | /** |
322 | * DEFINE_IDTENTRY_IST - Emit code for IST entry points | |
323 | * @func: Function name of the entry point | |
324 | * | |
325 | * Maps to DEFINE_IDTENTRY_RAW | |
326 | */ | |
327 | #define DEFINE_IDTENTRY_IST(func) \ | |
328 | DEFINE_IDTENTRY_RAW(func) | |
329 | ||
f08e32ec TG |
330 | /** |
331 | * DEFINE_IDTENTRY_NOIST - Emit code for NOIST entry points which | |
332 | * belong to a IST entry point (MCE, DB) | |
333 | * @func: Function name of the entry point. Must be the same as | |
334 | * the function name of the corresponding IST variant | |
335 | * | |
336 | * Maps to DEFINE_IDTENTRY_RAW(). | |
337 | */ | |
338 | #define DEFINE_IDTENTRY_NOIST(func) \ | |
339 | DEFINE_IDTENTRY_RAW(noist_##func) | |
340 | ||
6a8dfa8e TG |
341 | /** |
342 | * DECLARE_IDTENTRY_DF - Declare functions for double fault | |
343 | * @vector: Vector number (ignored for C) | |
344 | * @func: Function name of the entry point | |
345 | * | |
346 | * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE | |
347 | */ | |
348 | #define DECLARE_IDTENTRY_DF(vector, func) \ | |
349 | DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) | |
350 | ||
351 | /** | |
352 | * DEFINE_IDTENTRY_DF - Emit code for double fault | |
353 | * @func: Function name of the entry point | |
354 | * | |
355 | * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE | |
356 | */ | |
357 | #define DEFINE_IDTENTRY_DF(func) \ | |
358 | DEFINE_IDTENTRY_RAW_ERRORCODE(func) | |
359 | ||
a13644f3 JR |
360 | /** |
361 | * DEFINE_IDTENTRY_VC_SAFE_STACK - Emit code for VMM communication handler | |
362 | which runs on a safe stack. | |
363 | * @func: Function name of the entry point | |
364 | * | |
365 | * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE | |
366 | */ | |
367 | #define DEFINE_IDTENTRY_VC_SAFE_STACK(func) \ | |
368 | DEFINE_IDTENTRY_RAW_ERRORCODE(safe_stack_##func) | |
369 | ||
370 | /** | |
371 | * DEFINE_IDTENTRY_VC_IST - Emit code for VMM communication handler | |
372 | which runs on the VC fall-back stack | |
373 | * @func: Function name of the entry point | |
374 | * | |
375 | * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE | |
376 | */ | |
377 | #define DEFINE_IDTENTRY_VC_IST(func) \ | |
378 | DEFINE_IDTENTRY_RAW_ERRORCODE(ist_##func) | |
379 | ||
380 | /** | |
381 | * DEFINE_IDTENTRY_VC - Emit code for VMM communication handler | |
382 | * @func: Function name of the entry point | |
383 | * | |
384 | * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE | |
385 | */ | |
386 | #define DEFINE_IDTENTRY_VC(func) \ | |
387 | DEFINE_IDTENTRY_RAW_ERRORCODE(func) | |
388 | ||
2c058b03 | 389 | #else /* CONFIG_X86_64 */ |
6a8dfa8e | 390 | |
6a8dfa8e TG |
391 | /** |
392 | * DECLARE_IDTENTRY_DF - Declare functions for double fault 32bit variant | |
393 | * @vector: Vector number (ignored for C) | |
394 | * @func: Function name of the entry point | |
395 | * | |
396 | * Declares two functions: | |
397 | * - The ASM entry point: asm_##func | |
398 | * - The C handler called from the C shim | |
399 | */ | |
400 | #define DECLARE_IDTENTRY_DF(vector, func) \ | |
401 | asmlinkage void asm_##func(void); \ | |
402 | __visible void func(struct pt_regs *regs, \ | |
403 | unsigned long error_code, \ | |
404 | unsigned long address) | |
405 | ||
406 | /** | |
407 | * DEFINE_IDTENTRY_DF - Emit code for double fault on 32bit | |
408 | * @func: Function name of the entry point | |
409 | * | |
410 | * This is called through the doublefault shim which already provides | |
411 | * cr2 in the address argument. | |
412 | */ | |
413 | #define DEFINE_IDTENTRY_DF(func) \ | |
414 | __visible noinstr void func(struct pt_regs *regs, \ | |
415 | unsigned long error_code, \ | |
416 | unsigned long address) | |
417 | ||
2c058b03 TG |
418 | #endif /* !CONFIG_X86_64 */ |
419 | ||
420 | /* C-Code mapping */ | |
13cbc0cd AL |
421 | #define DECLARE_IDTENTRY_NMI DECLARE_IDTENTRY_RAW |
422 | #define DEFINE_IDTENTRY_NMI DEFINE_IDTENTRY_RAW | |
423 | ||
424 | #ifdef CONFIG_X86_64 | |
2c058b03 TG |
425 | #define DECLARE_IDTENTRY_MCE DECLARE_IDTENTRY_IST |
426 | #define DEFINE_IDTENTRY_MCE DEFINE_IDTENTRY_IST | |
f08e32ec | 427 | #define DEFINE_IDTENTRY_MCE_USER DEFINE_IDTENTRY_NOIST |
2c058b03 | 428 | |
2c058b03 TG |
429 | #define DECLARE_IDTENTRY_DEBUG DECLARE_IDTENTRY_IST |
430 | #define DEFINE_IDTENTRY_DEBUG DEFINE_IDTENTRY_IST | |
f08e32ec | 431 | #define DEFINE_IDTENTRY_DEBUG_USER DEFINE_IDTENTRY_NOIST |
13cbc0cd | 432 | #endif |
2c058b03 | 433 | |
53aaf262 TG |
434 | #else /* !__ASSEMBLY__ */ |
435 | ||
436 | /* | |
437 | * The ASM variants for DECLARE_IDTENTRY*() which emit the ASM entry stubs. | |
438 | */ | |
439 | #define DECLARE_IDTENTRY(vector, func) \ | |
e2dcb5f1 | 440 | idtentry vector asm_##func func has_error_code=0 |
53aaf262 | 441 | |
aabfe538 | 442 | #define DECLARE_IDTENTRY_ERRORCODE(vector, func) \ |
e2dcb5f1 | 443 | idtentry vector asm_##func func has_error_code=1 |
aabfe538 | 444 | |
d7729050 TG |
445 | /* Special case for 32bit IRET 'trap'. Do not emit ASM code */ |
446 | #define DECLARE_IDTENTRY_SW(vector, func) | |
447 | ||
0dc6cdc2 TG |
448 | #define DECLARE_IDTENTRY_RAW(vector, func) \ |
449 | DECLARE_IDTENTRY(vector, func) | |
450 | ||
6a8dfa8e TG |
451 | #define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) \ |
452 | DECLARE_IDTENTRY_ERRORCODE(vector, func) | |
453 | ||
0bf7c314 TG |
454 | /* Entries for common/spurious (device) interrupts */ |
455 | #define DECLARE_IDTENTRY_IRQ(vector, func) \ | |
456 | idtentry_irq vector func | |
457 | ||
6368558c TG |
458 | /* System vector entries */ |
459 | #define DECLARE_IDTENTRY_SYSVEC(vector, func) \ | |
460 | idtentry_sysvec vector func | |
461 | ||
2c058b03 TG |
462 | #ifdef CONFIG_X86_64 |
463 | # define DECLARE_IDTENTRY_MCE(vector, func) \ | |
464 | idtentry_mce_db vector asm_##func func | |
465 | ||
466 | # define DECLARE_IDTENTRY_DEBUG(vector, func) \ | |
467 | idtentry_mce_db vector asm_##func func | |
468 | ||
6a8dfa8e TG |
469 | # define DECLARE_IDTENTRY_DF(vector, func) \ |
470 | idtentry_df vector asm_##func func | |
471 | ||
2f6474e4 TG |
472 | # define DECLARE_IDTENTRY_XENCB(vector, func) \ |
473 | DECLARE_IDTENTRY(vector, func) | |
474 | ||
a13644f3 JR |
475 | # define DECLARE_IDTENTRY_VC(vector, func) \ |
476 | idtentry_vc vector asm_##func func | |
477 | ||
2c058b03 TG |
478 | #else |
479 | # define DECLARE_IDTENTRY_MCE(vector, func) \ | |
480 | DECLARE_IDTENTRY(vector, func) | |
481 | ||
6a8dfa8e TG |
482 | /* No ASM emitted for DF as this goes through a C shim */ |
483 | # define DECLARE_IDTENTRY_DF(vector, func) | |
484 | ||
2f6474e4 TG |
485 | /* No ASM emitted for XEN hypervisor callback */ |
486 | # define DECLARE_IDTENTRY_XENCB(vector, func) | |
487 | ||
2c058b03 TG |
488 | #endif |
489 | ||
490 | /* No ASM code emitted for NMI */ | |
491 | #define DECLARE_IDTENTRY_NMI(vector, func) | |
492 | ||
633260fa TG |
493 | /* |
494 | * ASM code to emit the common vector entry stubs where each stub is | |
495 | * packed into 8 bytes. | |
496 | * | |
497 | * Note, that the 'pushq imm8' is emitted via '.byte 0x6a, vector' because | |
498 | * GCC treats the local vector variable as unsigned int and would expand | |
499 | * all vectors above 0x7F to a 5 byte push. The original code did an | |
500 | * adjustment of the vector number to be in the signed byte range to avoid | |
501 | * this. While clever it's mindboggling counterintuitive and requires the | |
502 | * odd conversion back to a real vector number in the C entry points. Using | |
503 | * .byte achieves the same thing and the only fixup needed in the C entry | |
504 | * point is to mask off the bits above bit 7 because the push is sign | |
505 | * extending. | |
506 | */ | |
507 | .align 8 | |
508 | SYM_CODE_START(irq_entries_start) | |
509 | vector=FIRST_EXTERNAL_VECTOR | |
633260fa TG |
510 | .rept (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR) |
511 | UNWIND_HINT_IRET_REGS | |
6ee93f8d | 512 | 0 : |
633260fa | 513 | .byte 0x6a, vector |
fa5e5c40 | 514 | jmp asm_common_interrupt |
633260fa TG |
515 | nop |
516 | /* Ensure that the above is 8 bytes max */ | |
6ee93f8d JC |
517 | . = 0b + 8 |
518 | vector = vector+1 | |
633260fa TG |
519 | .endr |
520 | SYM_CODE_END(irq_entries_start) | |
521 | ||
522 | #ifdef CONFIG_X86_LOCAL_APIC | |
523 | .align 8 | |
524 | SYM_CODE_START(spurious_entries_start) | |
525 | vector=FIRST_SYSTEM_VECTOR | |
633260fa TG |
526 | .rept (NR_VECTORS - FIRST_SYSTEM_VECTOR) |
527 | UNWIND_HINT_IRET_REGS | |
6ee93f8d | 528 | 0 : |
633260fa | 529 | .byte 0x6a, vector |
fa5e5c40 | 530 | jmp asm_spurious_interrupt |
633260fa TG |
531 | nop |
532 | /* Ensure that the above is 8 bytes max */ | |
6ee93f8d JC |
533 | . = 0b + 8 |
534 | vector = vector+1 | |
633260fa TG |
535 | .endr |
536 | SYM_CODE_END(spurious_entries_start) | |
537 | #endif | |
538 | ||
53aaf262 TG |
539 | #endif /* __ASSEMBLY__ */ |
540 | ||
9d06c402 TG |
541 | /* |
542 | * The actual entry points. Note that DECLARE_IDTENTRY*() serves two | |
543 | * purposes: | |
544 | * - provide the function declarations when included from C-Code | |
545 | * - emit the ASM stubs when included from entry_32/64.S | |
546 | * | |
547 | * This avoids duplicate defines and ensures that everything is consistent. | |
548 | */ | |
549 | ||
2f6474e4 TG |
550 | /* |
551 | * Dummy trap number so the low level ASM macro vector number checks do not | |
552 | * match which results in emitting plain IDTENTRY stubs without bells and | |
553 | * whistels. | |
554 | */ | |
555 | #define X86_TRAP_OTHER 0xFFFF | |
556 | ||
9d06c402 TG |
557 | /* Simple exception entry points. No hardware error code */ |
558 | DECLARE_IDTENTRY(X86_TRAP_DE, exc_divide_error); | |
4b6b9111 | 559 | DECLARE_IDTENTRY(X86_TRAP_OF, exc_overflow); |
58d9c81f | 560 | DECLARE_IDTENTRY(X86_TRAP_BR, exc_bounds); |
866ae2cc | 561 | DECLARE_IDTENTRY(X86_TRAP_NM, exc_device_not_available); |
f95658fd | 562 | DECLARE_IDTENTRY(X86_TRAP_OLD_MF, exc_coproc_segment_overrun); |
dad7106f | 563 | DECLARE_IDTENTRY(X86_TRAP_SPURIOUS, exc_spurious_interrupt_bug); |
14a8bd2a | 564 | DECLARE_IDTENTRY(X86_TRAP_MF, exc_coprocessor_error); |
48227e21 | 565 | DECLARE_IDTENTRY(X86_TRAP_XF, exc_simd_coprocessor_error); |
9d06c402 | 566 | |
d7729050 TG |
567 | /* 32bit software IRET trap. Do not emit ASM code */ |
568 | DECLARE_IDTENTRY_SW(X86_TRAP_IRET, iret_error); | |
569 | ||
97b3d290 TG |
570 | /* Simple exception entries with error code pushed by hardware */ |
571 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_TS, exc_invalid_tss); | |
99a3fb8d | 572 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_NP, exc_segment_not_present); |
fd9689bf | 573 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_SS, exc_stack_segment); |
be4c11af | 574 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_GP, exc_general_protection); |
436608bb | 575 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_AC, exc_alignment_check); |
97b3d290 | 576 | |
8edd7e37 | 577 | /* Raw exception entries which need extra work */ |
15a416e8 | 578 | DECLARE_IDTENTRY_RAW(X86_TRAP_UD, exc_invalid_op); |
91eeafea TG |
579 | DECLARE_IDTENTRY_RAW(X86_TRAP_BP, exc_int3); |
580 | DECLARE_IDTENTRY_RAW_ERRORCODE(X86_TRAP_PF, exc_page_fault); | |
8edd7e37 | 581 | |
8cd501c1 | 582 | #ifdef CONFIG_X86_MCE |
13cbc0cd | 583 | #ifdef CONFIG_X86_64 |
8cd501c1 | 584 | DECLARE_IDTENTRY_MCE(X86_TRAP_MC, exc_machine_check); |
13cbc0cd AL |
585 | #else |
586 | DECLARE_IDTENTRY_RAW(X86_TRAP_MC, exc_machine_check); | |
587 | #endif | |
8cd501c1 TG |
588 | #endif |
589 | ||
6271fef0 TG |
590 | /* NMI */ |
591 | DECLARE_IDTENTRY_NMI(X86_TRAP_NMI, exc_nmi); | |
76fdb041 | 592 | #ifdef CONFIG_XEN_PV |
f41f0824 AL |
593 | DECLARE_IDTENTRY_RAW(X86_TRAP_NMI, xenpv_exc_nmi); |
594 | #endif | |
6271fef0 | 595 | |
2bbc68f8 | 596 | /* #DB */ |
13cbc0cd | 597 | #ifdef CONFIG_X86_64 |
2bbc68f8 | 598 | DECLARE_IDTENTRY_DEBUG(X86_TRAP_DB, exc_debug); |
13cbc0cd AL |
599 | #else |
600 | DECLARE_IDTENTRY_RAW(X86_TRAP_DB, exc_debug); | |
601 | #endif | |
76fdb041 | 602 | #ifdef CONFIG_XEN_PV |
f41f0824 AL |
603 | DECLARE_IDTENTRY_RAW(X86_TRAP_DB, xenpv_exc_debug); |
604 | #endif | |
2bbc68f8 | 605 | |
c29c775a TG |
606 | /* #DF */ |
607 | DECLARE_IDTENTRY_DF(X86_TRAP_DF, exc_double_fault); | |
608 | ||
0786138c TL |
609 | /* #VC */ |
610 | #ifdef CONFIG_AMD_MEM_ENCRYPT | |
611 | DECLARE_IDTENTRY_VC(X86_TRAP_VC, exc_vmm_communication); | |
612 | #endif | |
613 | ||
2f6474e4 TG |
614 | #ifdef CONFIG_XEN_PV |
615 | DECLARE_IDTENTRY_XENCB(X86_TRAP_OTHER, exc_xen_hypervisor_callback); | |
616 | #endif | |
617 | ||
fa5e5c40 TG |
618 | /* Device interrupts common/spurious */ |
619 | DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, common_interrupt); | |
620 | #ifdef CONFIG_X86_LOCAL_APIC | |
621 | DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, spurious_interrupt); | |
622 | #endif | |
623 | ||
db0338ee TG |
624 | /* System vector entry points */ |
625 | #ifdef CONFIG_X86_LOCAL_APIC | |
626 | DECLARE_IDTENTRY_SYSVEC(ERROR_APIC_VECTOR, sysvec_error_interrupt); | |
627 | DECLARE_IDTENTRY_SYSVEC(SPURIOUS_APIC_VECTOR, sysvec_spurious_apic_interrupt); | |
628 | DECLARE_IDTENTRY_SYSVEC(LOCAL_TIMER_VECTOR, sysvec_apic_timer_interrupt); | |
629 | DECLARE_IDTENTRY_SYSVEC(X86_PLATFORM_IPI_VECTOR, sysvec_x86_platform_ipi); | |
630 | #endif | |
631 | ||
582f9191 | 632 | #ifdef CONFIG_SMP |
13cad985 | 633 | DECLARE_IDTENTRY(RESCHEDULE_VECTOR, sysvec_reschedule_ipi); |
582f9191 TG |
634 | DECLARE_IDTENTRY_SYSVEC(IRQ_MOVE_CLEANUP_VECTOR, sysvec_irq_move_cleanup); |
635 | DECLARE_IDTENTRY_SYSVEC(REBOOT_VECTOR, sysvec_reboot); | |
636 | DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_SINGLE_VECTOR, sysvec_call_function_single); | |
637 | DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_VECTOR, sysvec_call_function); | |
638 | #endif | |
639 | ||
720909a7 | 640 | #ifdef CONFIG_X86_LOCAL_APIC |
720909a7 TG |
641 | # ifdef CONFIG_X86_MCE_THRESHOLD |
642 | DECLARE_IDTENTRY_SYSVEC(THRESHOLD_APIC_VECTOR, sysvec_threshold); | |
643 | # endif | |
644 | ||
645 | # ifdef CONFIG_X86_MCE_AMD | |
646 | DECLARE_IDTENTRY_SYSVEC(DEFERRED_ERROR_VECTOR, sysvec_deferred_error); | |
647 | # endif | |
648 | ||
649 | # ifdef CONFIG_X86_THERMAL_VECTOR | |
650 | DECLARE_IDTENTRY_SYSVEC(THERMAL_APIC_VECTOR, sysvec_thermal); | |
651 | # endif | |
652 | ||
653 | # ifdef CONFIG_IRQ_WORK | |
654 | DECLARE_IDTENTRY_SYSVEC(IRQ_WORK_VECTOR, sysvec_irq_work); | |
655 | # endif | |
656 | #endif | |
657 | ||
9c3b1f49 TG |
658 | #ifdef CONFIG_HAVE_KVM |
659 | DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_VECTOR, sysvec_kvm_posted_intr_ipi); | |
660 | DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_WAKEUP_VECTOR, sysvec_kvm_posted_intr_wakeup_ipi); | |
661 | DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_NESTED_VECTOR, sysvec_kvm_posted_intr_nested_ipi); | |
662 | #endif | |
663 | ||
a16be368 TG |
664 | #if IS_ENABLED(CONFIG_HYPERV) |
665 | DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_hyperv_callback); | |
5769fe26 SD |
666 | DECLARE_IDTENTRY_SYSVEC(HYPERV_REENLIGHTENMENT_VECTOR, sysvec_hyperv_reenlightenment); |
667 | DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0); | |
a16be368 TG |
668 | #endif |
669 | ||
670 | #if IS_ENABLED(CONFIG_ACRN_GUEST) | |
671 | DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_acrn_hv_callback); | |
672 | #endif | |
673 | ||
cb09ea29 TG |
674 | #ifdef CONFIG_XEN_PVHVM |
675 | DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_xen_hvm_callback); | |
676 | #endif | |
677 | ||
26d05b36 PB |
678 | #ifdef CONFIG_KVM_GUEST |
679 | DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_kvm_asyncpf_interrupt); | |
680 | #endif | |
681 | ||
2f6474e4 TG |
682 | #undef X86_TRAP_OTHER |
683 | ||
53aaf262 | 684 | #endif |