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 | #define IDT_ALIGN (8 * (1 + HAS_KERNEL_IBT)) |
9 | |
10 | #ifndef __ASSEMBLY__ |
11 | #include <linux/entry-common.h> |
12 | #include <linux/hardirq.h> |
13 | |
14 | #include <asm/irq_stack.h> |
15 | |
16 | /** |
17 | * DECLARE_IDTENTRY - Declare functions for simple IDT entry points |
18 | * No error code pushed by hardware |
19 | * @vector: Vector number (ignored for C) |
20 | * @func: Function name of the entry point |
21 | * |
22 | * Declares three functions: |
23 | * - The ASM entry point: asm_##func |
24 | * - The XEN PV trap entry point: xen_##func (maybe unused) |
25 | * - The C handler called from the ASM entry point |
26 | * |
27 | * Note: This is the C variant of DECLARE_IDTENTRY(). As the name says it |
28 | * declares the entry points for usage in C code. There is an ASM variant |
29 | * as well which is used to emit the entry stubs in entry_32/64.S. |
30 | */ |
31 | #define DECLARE_IDTENTRY(vector, func) \ |
32 | asmlinkage void asm_##func(void); \ |
33 | asmlinkage void xen_asm_##func(void); \ |
34 | __visible void func(struct pt_regs *regs) |
35 | |
36 | /** |
37 | * DEFINE_IDTENTRY - Emit code for simple IDT entry points |
38 | * @func: Function name of the entry point |
39 | * |
40 | * @func is called from ASM entry code with interrupts disabled. |
41 | * |
42 | * The macro is written so it acts as function definition. Append the |
43 | * body with a pair of curly brackets. |
44 | * |
45 | * irqentry_enter() contains common code which has to be invoked before |
46 | * arbitrary code in the body. irqentry_exit() contains common code |
47 | * which has to run before returning to the low level assembly code. |
48 | */ |
49 | #define DEFINE_IDTENTRY(func) \ |
50 | static __always_inline void __##func(struct pt_regs *regs); \ |
51 | \ |
52 | __visible noinstr void func(struct pt_regs *regs) \ |
53 | { \ |
54 | irqentry_state_t state = irqentry_enter(regs); \ |
55 | \ |
56 | instrumentation_begin(); \ |
57 | __##func (regs); \ |
58 | instrumentation_end(); \ |
59 | irqentry_exit(regs, state); \ |
60 | } \ |
61 | \ |
62 | static __always_inline void __##func(struct pt_regs *regs) |
63 | |
64 | /* Special case for 32bit IRET 'trap' */ |
65 | #define DECLARE_IDTENTRY_SW DECLARE_IDTENTRY |
66 | #define DEFINE_IDTENTRY_SW DEFINE_IDTENTRY |
67 | |
68 | /** |
69 | * DECLARE_IDTENTRY_ERRORCODE - Declare functions for simple IDT entry points |
70 | * Error code pushed by hardware |
71 | * @vector: Vector number (ignored for C) |
72 | * @func: Function name of the entry point |
73 | * |
74 | * Declares three functions: |
75 | * - The ASM entry point: asm_##func |
76 | * - The XEN PV trap entry point: xen_##func (maybe unused) |
77 | * - The C handler called from the ASM entry point |
78 | * |
79 | * Same as DECLARE_IDTENTRY, but has an extra error_code argument for the |
80 | * C-handler. |
81 | */ |
82 | #define DECLARE_IDTENTRY_ERRORCODE(vector, func) \ |
83 | asmlinkage void asm_##func(void); \ |
84 | asmlinkage void xen_asm_##func(void); \ |
85 | __visible void func(struct pt_regs *regs, unsigned long error_code) |
86 | |
87 | /** |
88 | * DEFINE_IDTENTRY_ERRORCODE - Emit code for simple IDT entry points |
89 | * Error code pushed by hardware |
90 | * @func: Function name of the entry point |
91 | * |
92 | * Same as DEFINE_IDTENTRY, but has an extra error_code argument |
93 | */ |
94 | #define DEFINE_IDTENTRY_ERRORCODE(func) \ |
95 | static __always_inline void __##func(struct pt_regs *regs, \ |
96 | unsigned long error_code); \ |
97 | \ |
98 | __visible noinstr void func(struct pt_regs *regs, \ |
99 | unsigned long error_code) \ |
100 | { \ |
101 | irqentry_state_t state = irqentry_enter(regs); \ |
102 | \ |
103 | instrumentation_begin(); \ |
104 | __##func (regs, error_code); \ |
105 | instrumentation_end(); \ |
106 | irqentry_exit(regs, state); \ |
107 | } \ |
108 | \ |
109 | static __always_inline void __##func(struct pt_regs *regs, \ |
110 | unsigned long error_code) |
111 | |
112 | /** |
113 | * DECLARE_IDTENTRY_RAW - Declare functions for raw IDT entry points |
114 | * No error code pushed by hardware |
115 | * @vector: Vector number (ignored for C) |
116 | * @func: Function name of the entry point |
117 | * |
118 | * Maps to DECLARE_IDTENTRY(). |
119 | */ |
120 | #define DECLARE_IDTENTRY_RAW(vector, func) \ |
121 | DECLARE_IDTENTRY(vector, func) |
122 | |
123 | /** |
124 | * DEFINE_IDTENTRY_RAW - Emit code for raw IDT entry points |
125 | * @func: Function name of the entry point |
126 | * |
127 | * @func is called from ASM entry code with interrupts disabled. |
128 | * |
129 | * The macro is written so it acts as function definition. Append the |
130 | * body with a pair of curly brackets. |
131 | * |
132 | * Contrary to DEFINE_IDTENTRY() this does not invoke the |
133 | * idtentry_enter/exit() helpers before and after the body invocation. This |
134 | * needs to be done in the body itself if applicable. Use if extra work |
135 | * is required before the enter/exit() helpers are invoked. |
136 | */ |
137 | #define DEFINE_IDTENTRY_RAW(func) \ |
138 | __visible noinstr void func(struct pt_regs *regs) |
139 | |
140 | /** |
141 | * DECLARE_IDTENTRY_RAW_ERRORCODE - Declare functions for raw IDT entry points |
142 | * Error code pushed by hardware |
143 | * @vector: Vector number (ignored for C) |
144 | * @func: Function name of the entry point |
145 | * |
146 | * Maps to DECLARE_IDTENTRY_ERRORCODE() |
147 | */ |
148 | #define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) \ |
149 | DECLARE_IDTENTRY_ERRORCODE(vector, func) |
150 | |
151 | /** |
152 | * DEFINE_IDTENTRY_RAW_ERRORCODE - Emit code for raw IDT entry points |
153 | * @func: Function name of the entry point |
154 | * |
155 | * @func is called from ASM entry code with interrupts disabled. |
156 | * |
157 | * The macro is written so it acts as function definition. Append the |
158 | * body with a pair of curly brackets. |
159 | * |
160 | * Contrary to DEFINE_IDTENTRY_ERRORCODE() this does not invoke the |
161 | * irqentry_enter/exit() helpers before and after the body invocation. This |
162 | * needs to be done in the body itself if applicable. Use if extra work |
163 | * is required before the enter/exit() helpers are invoked. |
164 | */ |
165 | #define DEFINE_IDTENTRY_RAW_ERRORCODE(func) \ |
166 | __visible noinstr void func(struct pt_regs *regs, unsigned long error_code) |
167 | |
168 | /** |
169 | * DECLARE_IDTENTRY_IRQ - Declare functions for device interrupt IDT entry |
170 | * points (common/spurious) |
171 | * @vector: Vector number (ignored for C) |
172 | * @func: Function name of the entry point |
173 | * |
174 | * Maps to DECLARE_IDTENTRY_ERRORCODE() |
175 | */ |
176 | #define DECLARE_IDTENTRY_IRQ(vector, func) \ |
177 | DECLARE_IDTENTRY_ERRORCODE(vector, func) |
178 | |
179 | /** |
180 | * DEFINE_IDTENTRY_IRQ - Emit code for device interrupt IDT entry points |
181 | * @func: Function name of the entry point |
182 | * |
183 | * The vector number is pushed by the low level entry stub and handed |
184 | * to the function as error_code argument which needs to be truncated |
185 | * to an u8 because the push is sign extending. |
186 | * |
187 | * irq_enter/exit_rcu() are invoked before the function body and the |
188 | * KVM L1D flush request is set. Stack switching to the interrupt stack |
189 | * has to be done in the function body if necessary. |
190 | */ |
191 | #define DEFINE_IDTENTRY_IRQ(func) \ |
192 | static void __##func(struct pt_regs *regs, u32 vector); \ |
193 | \ |
194 | __visible noinstr void func(struct pt_regs *regs, \ |
195 | unsigned long error_code) \ |
196 | { \ |
197 | irqentry_state_t state = irqentry_enter(regs); \ |
198 | u32 vector = (u32)(u8)error_code; \ |
199 | \ |
200 | instrumentation_begin(); \ |
201 | kvm_set_cpu_l1tf_flush_l1d(); \ |
202 | run_irq_on_irqstack_cond(__##func, regs, vector); \ |
203 | instrumentation_end(); \ |
204 | irqentry_exit(regs, state); \ |
205 | } \ |
206 | \ |
207 | static noinline void __##func(struct pt_regs *regs, u32 vector) |
208 | |
209 | /** |
210 | * DECLARE_IDTENTRY_SYSVEC - Declare functions for system vector entry points |
211 | * @vector: Vector number (ignored for C) |
212 | * @func: Function name of the entry point |
213 | * |
214 | * Declares three functions: |
215 | * - The ASM entry point: asm_##func |
216 | * - The XEN PV trap entry point: xen_##func (maybe unused) |
217 | * - The C handler called from the ASM entry point |
218 | * |
219 | * Maps to DECLARE_IDTENTRY(). |
220 | */ |
221 | #define DECLARE_IDTENTRY_SYSVEC(vector, func) \ |
222 | DECLARE_IDTENTRY(vector, func) |
223 | |
224 | /** |
225 | * DEFINE_IDTENTRY_SYSVEC - Emit code for system vector IDT entry points |
226 | * @func: Function name of the entry point |
227 | * |
228 | * irqentry_enter/exit() and irq_enter/exit_rcu() are invoked before the |
229 | * function body. KVM L1D flush request is set. |
230 | * |
231 | * Runs the function on the interrupt stack if the entry hit kernel mode |
232 | */ |
233 | #define DEFINE_IDTENTRY_SYSVEC(func) \ |
234 | static void __##func(struct pt_regs *regs); \ |
235 | \ |
236 | __visible noinstr void func(struct pt_regs *regs) \ |
237 | { \ |
238 | irqentry_state_t state = irqentry_enter(regs); \ |
239 | \ |
240 | instrumentation_begin(); \ |
241 | kvm_set_cpu_l1tf_flush_l1d(); \ |
242 | run_sysvec_on_irqstack_cond(__##func, regs); \ |
243 | instrumentation_end(); \ |
244 | irqentry_exit(regs, state); \ |
245 | } \ |
246 | \ |
247 | static noinline void __##func(struct pt_regs *regs) |
248 | |
249 | /** |
250 | * DEFINE_IDTENTRY_SYSVEC_SIMPLE - Emit code for simple system vector IDT |
251 | * entry points |
252 | * @func: Function name of the entry point |
253 | * |
254 | * Runs the function on the interrupted stack. No switch to IRQ stack and |
255 | * only the minimal __irq_enter/exit() handling. |
256 | * |
257 | * Only use for 'empty' vectors like reschedule IPI and KVM posted |
258 | * interrupt vectors. |
259 | */ |
260 | #define DEFINE_IDTENTRY_SYSVEC_SIMPLE(func) \ |
261 | static __always_inline void __##func(struct pt_regs *regs); \ |
262 | \ |
263 | __visible noinstr void func(struct pt_regs *regs) \ |
264 | { \ |
265 | irqentry_state_t state = irqentry_enter(regs); \ |
266 | \ |
267 | instrumentation_begin(); \ |
268 | __irq_enter_raw(); \ |
269 | kvm_set_cpu_l1tf_flush_l1d(); \ |
270 | __##func (regs); \ |
271 | __irq_exit_raw(); \ |
272 | instrumentation_end(); \ |
273 | irqentry_exit(regs, state); \ |
274 | } \ |
275 | \ |
276 | static __always_inline void __##func(struct pt_regs *regs) |
277 | |
278 | /** |
279 | * DECLARE_IDTENTRY_XENCB - Declare functions for XEN HV callback entry point |
280 | * @vector: Vector number (ignored for C) |
281 | * @func: Function name of the entry point |
282 | * |
283 | * Declares three functions: |
284 | * - The ASM entry point: asm_##func |
285 | * - The XEN PV trap entry point: xen_##func (maybe unused) |
286 | * - The C handler called from the ASM entry point |
287 | * |
288 | * Maps to DECLARE_IDTENTRY(). Distinct entry point to handle the 32/64-bit |
289 | * difference |
290 | */ |
291 | #define DECLARE_IDTENTRY_XENCB(vector, func) \ |
292 | DECLARE_IDTENTRY(vector, func) |
293 | |
294 | #ifdef CONFIG_X86_64 |
295 | /** |
296 | * DECLARE_IDTENTRY_IST - Declare functions for IST handling IDT entry points |
297 | * @vector: Vector number (ignored for C) |
298 | * @func: Function name of the entry point |
299 | * |
300 | * Maps to DECLARE_IDTENTRY_RAW, but declares also the NOIST C handler |
301 | * which is called from the ASM entry point on user mode entry |
302 | */ |
303 | #define DECLARE_IDTENTRY_IST(vector, func) \ |
304 | DECLARE_IDTENTRY_RAW(vector, func); \ |
305 | __visible void noist_##func(struct pt_regs *regs) |
306 | |
307 | /** |
308 | * DECLARE_IDTENTRY_VC - Declare functions for the VC entry point |
309 | * @vector: Vector number (ignored for C) |
310 | * @func: Function name of the entry point |
311 | * |
312 | * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE, but declares also the |
313 | * safe_stack C handler. |
314 | */ |
315 | #define DECLARE_IDTENTRY_VC(vector, func) \ |
316 | DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func); \ |
317 | __visible noinstr void kernel_##func(struct pt_regs *regs, unsigned long error_code); \ |
318 | __visible noinstr void user_##func(struct pt_regs *regs, unsigned long error_code) |
319 | |
320 | /** |
321 | * DEFINE_IDTENTRY_IST - Emit code for IST entry points |
322 | * @func: Function name of the entry point |
323 | * |
324 | * Maps to DEFINE_IDTENTRY_RAW |
325 | */ |
326 | #define DEFINE_IDTENTRY_IST(func) \ |
327 | DEFINE_IDTENTRY_RAW(func) |
328 | |
329 | /** |
330 | * DEFINE_IDTENTRY_NOIST - Emit code for NOIST entry points which |
331 | * belong to a IST entry point (MCE, DB) |
332 | * @func: Function name of the entry point. Must be the same as |
333 | * the function name of the corresponding IST variant |
334 | * |
335 | * Maps to DEFINE_IDTENTRY_RAW(). |
336 | */ |
337 | #define DEFINE_IDTENTRY_NOIST(func) \ |
338 | DEFINE_IDTENTRY_RAW(noist_##func) |
339 | |
340 | /** |
341 | * DECLARE_IDTENTRY_DF - Declare functions for double fault |
342 | * @vector: Vector number (ignored for C) |
343 | * @func: Function name of the entry point |
344 | * |
345 | * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE |
346 | */ |
347 | #define DECLARE_IDTENTRY_DF(vector, func) \ |
348 | DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) |
349 | |
350 | /** |
351 | * DEFINE_IDTENTRY_DF - Emit code for double fault |
352 | * @func: Function name of the entry point |
353 | * |
354 | * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE |
355 | */ |
356 | #define DEFINE_IDTENTRY_DF(func) \ |
357 | DEFINE_IDTENTRY_RAW_ERRORCODE(func) |
358 | |
359 | /** |
360 | * DEFINE_IDTENTRY_VC_KERNEL - Emit code for VMM communication handler |
361 | when raised from kernel mode |
362 | * @func: Function name of the entry point |
363 | * |
364 | * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE |
365 | */ |
366 | #define DEFINE_IDTENTRY_VC_KERNEL(func) \ |
367 | DEFINE_IDTENTRY_RAW_ERRORCODE(kernel_##func) |
368 | |
369 | /** |
370 | * DEFINE_IDTENTRY_VC_USER - Emit code for VMM communication handler |
371 | when raised from user mode |
372 | * @func: Function name of the entry point |
373 | * |
374 | * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE |
375 | */ |
376 | #define DEFINE_IDTENTRY_VC_USER(func) \ |
377 | DEFINE_IDTENTRY_RAW_ERRORCODE(user_##func) |
378 | |
379 | #else /* CONFIG_X86_64 */ |
380 | |
381 | /** |
382 | * DECLARE_IDTENTRY_DF - Declare functions for double fault 32bit variant |
383 | * @vector: Vector number (ignored for C) |
384 | * @func: Function name of the entry point |
385 | * |
386 | * Declares two functions: |
387 | * - The ASM entry point: asm_##func |
388 | * - The C handler called from the C shim |
389 | */ |
390 | #define DECLARE_IDTENTRY_DF(vector, func) \ |
391 | asmlinkage void asm_##func(void); \ |
392 | __visible void func(struct pt_regs *regs, \ |
393 | unsigned long error_code, \ |
394 | unsigned long address) |
395 | |
396 | /** |
397 | * DEFINE_IDTENTRY_DF - Emit code for double fault on 32bit |
398 | * @func: Function name of the entry point |
399 | * |
400 | * This is called through the doublefault shim which already provides |
401 | * cr2 in the address argument. |
402 | */ |
403 | #define DEFINE_IDTENTRY_DF(func) \ |
404 | __visible noinstr void func(struct pt_regs *regs, \ |
405 | unsigned long error_code, \ |
406 | unsigned long address) |
407 | |
408 | #endif /* !CONFIG_X86_64 */ |
409 | |
410 | /* C-Code mapping */ |
411 | #define DECLARE_IDTENTRY_NMI DECLARE_IDTENTRY_RAW |
412 | #define DEFINE_IDTENTRY_NMI DEFINE_IDTENTRY_RAW |
413 | |
414 | #ifdef CONFIG_X86_64 |
415 | #define DECLARE_IDTENTRY_MCE DECLARE_IDTENTRY_IST |
416 | #define DEFINE_IDTENTRY_MCE DEFINE_IDTENTRY_IST |
417 | #define DEFINE_IDTENTRY_MCE_USER DEFINE_IDTENTRY_NOIST |
418 | |
419 | #define DECLARE_IDTENTRY_DEBUG DECLARE_IDTENTRY_IST |
420 | #define DEFINE_IDTENTRY_DEBUG DEFINE_IDTENTRY_IST |
421 | #define DEFINE_IDTENTRY_DEBUG_USER DEFINE_IDTENTRY_NOIST |
422 | #endif |
423 | |
424 | #else /* !__ASSEMBLY__ */ |
425 | |
426 | /* |
427 | * The ASM variants for DECLARE_IDTENTRY*() which emit the ASM entry stubs. |
428 | */ |
429 | #define DECLARE_IDTENTRY(vector, func) \ |
430 | idtentry vector asm_##func func has_error_code=0 |
431 | |
432 | #define DECLARE_IDTENTRY_ERRORCODE(vector, func) \ |
433 | idtentry vector asm_##func func has_error_code=1 |
434 | |
435 | /* Special case for 32bit IRET 'trap'. Do not emit ASM code */ |
436 | #define DECLARE_IDTENTRY_SW(vector, func) |
437 | |
438 | #define DECLARE_IDTENTRY_RAW(vector, func) \ |
439 | DECLARE_IDTENTRY(vector, func) |
440 | |
441 | #define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) \ |
442 | DECLARE_IDTENTRY_ERRORCODE(vector, func) |
443 | |
444 | /* Entries for common/spurious (device) interrupts */ |
445 | #define DECLARE_IDTENTRY_IRQ(vector, func) \ |
446 | idtentry_irq vector func |
447 | |
448 | /* System vector entries */ |
449 | #define DECLARE_IDTENTRY_SYSVEC(vector, func) \ |
450 | idtentry_sysvec vector func |
451 | |
452 | #ifdef CONFIG_X86_64 |
453 | # define DECLARE_IDTENTRY_MCE(vector, func) \ |
454 | idtentry_mce_db vector asm_##func func |
455 | |
456 | # define DECLARE_IDTENTRY_DEBUG(vector, func) \ |
457 | idtentry_mce_db vector asm_##func func |
458 | |
459 | # define DECLARE_IDTENTRY_DF(vector, func) \ |
460 | idtentry_df vector asm_##func func |
461 | |
462 | # define DECLARE_IDTENTRY_XENCB(vector, func) \ |
463 | DECLARE_IDTENTRY(vector, func) |
464 | |
465 | # define DECLARE_IDTENTRY_VC(vector, func) \ |
466 | idtentry_vc vector asm_##func func |
467 | |
468 | #else |
469 | # define DECLARE_IDTENTRY_MCE(vector, func) \ |
470 | DECLARE_IDTENTRY(vector, func) |
471 | |
472 | /* No ASM emitted for DF as this goes through a C shim */ |
473 | # define DECLARE_IDTENTRY_DF(vector, func) |
474 | |
475 | /* No ASM emitted for XEN hypervisor callback */ |
476 | # define DECLARE_IDTENTRY_XENCB(vector, func) |
477 | |
478 | #endif |
479 | |
480 | /* No ASM code emitted for NMI */ |
481 | #define DECLARE_IDTENTRY_NMI(vector, func) |
482 | |
483 | /* |
484 | * ASM code to emit the common vector entry stubs where each stub is |
485 | * packed into IDT_ALIGN bytes. |
486 | * |
487 | * Note, that the 'pushq imm8' is emitted via '.byte 0x6a, vector' because |
488 | * GCC treats the local vector variable as unsigned int and would expand |
489 | * all vectors above 0x7F to a 5 byte push. The original code did an |
490 | * adjustment of the vector number to be in the signed byte range to avoid |
491 | * this. While clever it's mindboggling counterintuitive and requires the |
492 | * odd conversion back to a real vector number in the C entry points. Using |
493 | * .byte achieves the same thing and the only fixup needed in the C entry |
494 | * point is to mask off the bits above bit 7 because the push is sign |
495 | * extending. |
496 | */ |
497 | .align IDT_ALIGN |
498 | SYM_CODE_START(irq_entries_start) |
499 | vector=FIRST_EXTERNAL_VECTOR |
500 | .rept NR_EXTERNAL_VECTORS |
501 | UNWIND_HINT_IRET_REGS |
502 | 0 : |
503 | ENDBR |
504 | .byte 0x6a, vector |
505 | jmp asm_common_interrupt |
506 | /* Ensure that the above is IDT_ALIGN bytes max */ |
507 | .fill 0b + IDT_ALIGN - ., 1, 0xcc |
508 | vector = vector+1 |
509 | .endr |
510 | SYM_CODE_END(irq_entries_start) |
511 | |
512 | #ifdef CONFIG_X86_LOCAL_APIC |
513 | .align IDT_ALIGN |
514 | SYM_CODE_START(spurious_entries_start) |
515 | vector=FIRST_SYSTEM_VECTOR |
516 | .rept NR_SYSTEM_VECTORS |
517 | UNWIND_HINT_IRET_REGS |
518 | 0 : |
519 | ENDBR |
520 | .byte 0x6a, vector |
521 | jmp asm_spurious_interrupt |
522 | /* Ensure that the above is IDT_ALIGN bytes max */ |
523 | .fill 0b + IDT_ALIGN - ., 1, 0xcc |
524 | vector = vector+1 |
525 | .endr |
526 | SYM_CODE_END(spurious_entries_start) |
527 | #endif |
528 | |
529 | #endif /* __ASSEMBLY__ */ |
530 | |
531 | /* |
532 | * The actual entry points. Note that DECLARE_IDTENTRY*() serves two |
533 | * purposes: |
534 | * - provide the function declarations when included from C-Code |
535 | * - emit the ASM stubs when included from entry_32/64.S |
536 | * |
537 | * This avoids duplicate defines and ensures that everything is consistent. |
538 | */ |
539 | |
540 | /* |
541 | * Dummy trap number so the low level ASM macro vector number checks do not |
542 | * match which results in emitting plain IDTENTRY stubs without bells and |
543 | * whistles. |
544 | */ |
545 | #define X86_TRAP_OTHER 0xFFFF |
546 | |
547 | /* Simple exception entry points. No hardware error code */ |
548 | DECLARE_IDTENTRY(X86_TRAP_DE, exc_divide_error); |
549 | DECLARE_IDTENTRY(X86_TRAP_OF, exc_overflow); |
550 | DECLARE_IDTENTRY(X86_TRAP_BR, exc_bounds); |
551 | DECLARE_IDTENTRY(X86_TRAP_NM, exc_device_not_available); |
552 | DECLARE_IDTENTRY(X86_TRAP_OLD_MF, exc_coproc_segment_overrun); |
553 | DECLARE_IDTENTRY(X86_TRAP_SPURIOUS, exc_spurious_interrupt_bug); |
554 | DECLARE_IDTENTRY(X86_TRAP_MF, exc_coprocessor_error); |
555 | DECLARE_IDTENTRY(X86_TRAP_XF, exc_simd_coprocessor_error); |
556 | |
557 | /* 32bit software IRET trap. Do not emit ASM code */ |
558 | DECLARE_IDTENTRY_SW(X86_TRAP_IRET, iret_error); |
559 | |
560 | /* Simple exception entries with error code pushed by hardware */ |
561 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_TS, exc_invalid_tss); |
562 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_NP, exc_segment_not_present); |
563 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_SS, exc_stack_segment); |
564 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_GP, exc_general_protection); |
565 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_AC, exc_alignment_check); |
566 | |
567 | /* Raw exception entries which need extra work */ |
568 | DECLARE_IDTENTRY_RAW(X86_TRAP_UD, exc_invalid_op); |
569 | DECLARE_IDTENTRY_RAW(X86_TRAP_BP, exc_int3); |
570 | DECLARE_IDTENTRY_RAW_ERRORCODE(X86_TRAP_PF, exc_page_fault); |
571 | |
572 | #ifdef CONFIG_X86_MCE |
573 | #ifdef CONFIG_X86_64 |
574 | DECLARE_IDTENTRY_MCE(X86_TRAP_MC, exc_machine_check); |
575 | #else |
576 | DECLARE_IDTENTRY_RAW(X86_TRAP_MC, exc_machine_check); |
577 | #endif |
578 | #ifdef CONFIG_XEN_PV |
579 | DECLARE_IDTENTRY_RAW(X86_TRAP_MC, xenpv_exc_machine_check); |
580 | #endif |
581 | #endif |
582 | |
583 | /* NMI */ |
584 | |
585 | #if IS_ENABLED(CONFIG_KVM_INTEL) |
586 | /* |
587 | * Special entry point for VMX which invokes this on the kernel stack, even for |
588 | * 64-bit, i.e. without using an IST. asm_exc_nmi() requires an IST to work |
589 | * correctly vs. the NMI 'executing' marker. Used for 32-bit kernels as well |
590 | * to avoid more ifdeffery. |
591 | */ |
592 | DECLARE_IDTENTRY(X86_TRAP_NMI, exc_nmi_kvm_vmx); |
593 | #endif |
594 | |
595 | DECLARE_IDTENTRY_NMI(X86_TRAP_NMI, exc_nmi); |
596 | #ifdef CONFIG_XEN_PV |
597 | DECLARE_IDTENTRY_RAW(X86_TRAP_NMI, xenpv_exc_nmi); |
598 | #endif |
599 | |
600 | /* #DB */ |
601 | #ifdef CONFIG_X86_64 |
602 | DECLARE_IDTENTRY_DEBUG(X86_TRAP_DB, exc_debug); |
603 | #else |
604 | DECLARE_IDTENTRY_RAW(X86_TRAP_DB, exc_debug); |
605 | #endif |
606 | #ifdef CONFIG_XEN_PV |
607 | DECLARE_IDTENTRY_RAW(X86_TRAP_DB, xenpv_exc_debug); |
608 | #endif |
609 | |
610 | /* #DF */ |
611 | DECLARE_IDTENTRY_DF(X86_TRAP_DF, exc_double_fault); |
612 | #ifdef CONFIG_XEN_PV |
613 | DECLARE_IDTENTRY_RAW_ERRORCODE(X86_TRAP_DF, xenpv_exc_double_fault); |
614 | #endif |
615 | |
616 | /* #CP */ |
617 | #ifdef CONFIG_X86_CET |
618 | DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_CP, exc_control_protection); |
619 | #endif |
620 | |
621 | /* #VC */ |
622 | #ifdef CONFIG_AMD_MEM_ENCRYPT |
623 | DECLARE_IDTENTRY_VC(X86_TRAP_VC, exc_vmm_communication); |
624 | #endif |
625 | |
626 | #ifdef CONFIG_XEN_PV |
627 | DECLARE_IDTENTRY_XENCB(X86_TRAP_OTHER, exc_xen_hypervisor_callback); |
628 | DECLARE_IDTENTRY_RAW(X86_TRAP_OTHER, exc_xen_unknown_trap); |
629 | #endif |
630 | |
631 | #ifdef CONFIG_INTEL_TDX_GUEST |
632 | DECLARE_IDTENTRY(X86_TRAP_VE, exc_virtualization_exception); |
633 | #endif |
634 | |
635 | /* Device interrupts common/spurious */ |
636 | DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, common_interrupt); |
637 | #ifdef CONFIG_X86_LOCAL_APIC |
638 | DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, spurious_interrupt); |
639 | #endif |
640 | |
641 | /* System vector entry points */ |
642 | #ifdef CONFIG_X86_LOCAL_APIC |
643 | DECLARE_IDTENTRY_SYSVEC(ERROR_APIC_VECTOR, sysvec_error_interrupt); |
644 | DECLARE_IDTENTRY_SYSVEC(SPURIOUS_APIC_VECTOR, sysvec_spurious_apic_interrupt); |
645 | DECLARE_IDTENTRY_SYSVEC(LOCAL_TIMER_VECTOR, sysvec_apic_timer_interrupt); |
646 | DECLARE_IDTENTRY_SYSVEC(X86_PLATFORM_IPI_VECTOR, sysvec_x86_platform_ipi); |
647 | #endif |
648 | |
649 | #ifdef CONFIG_SMP |
650 | DECLARE_IDTENTRY(RESCHEDULE_VECTOR, sysvec_reschedule_ipi); |
651 | DECLARE_IDTENTRY_SYSVEC(REBOOT_VECTOR, sysvec_reboot); |
652 | DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_SINGLE_VECTOR, sysvec_call_function_single); |
653 | DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_VECTOR, sysvec_call_function); |
654 | #endif |
655 | |
656 | #ifdef CONFIG_X86_LOCAL_APIC |
657 | # ifdef CONFIG_X86_MCE_THRESHOLD |
658 | DECLARE_IDTENTRY_SYSVEC(THRESHOLD_APIC_VECTOR, sysvec_threshold); |
659 | # endif |
660 | |
661 | # ifdef CONFIG_X86_MCE_AMD |
662 | DECLARE_IDTENTRY_SYSVEC(DEFERRED_ERROR_VECTOR, sysvec_deferred_error); |
663 | # endif |
664 | |
665 | # ifdef CONFIG_X86_THERMAL_VECTOR |
666 | DECLARE_IDTENTRY_SYSVEC(THERMAL_APIC_VECTOR, sysvec_thermal); |
667 | # endif |
668 | |
669 | # ifdef CONFIG_IRQ_WORK |
670 | DECLARE_IDTENTRY_SYSVEC(IRQ_WORK_VECTOR, sysvec_irq_work); |
671 | # endif |
672 | #endif |
673 | |
674 | #ifdef CONFIG_HAVE_KVM |
675 | DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_VECTOR, sysvec_kvm_posted_intr_ipi); |
676 | DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_WAKEUP_VECTOR, sysvec_kvm_posted_intr_wakeup_ipi); |
677 | DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_NESTED_VECTOR, sysvec_kvm_posted_intr_nested_ipi); |
678 | #endif |
679 | |
680 | #if IS_ENABLED(CONFIG_HYPERV) |
681 | DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_hyperv_callback); |
682 | DECLARE_IDTENTRY_SYSVEC(HYPERV_REENLIGHTENMENT_VECTOR, sysvec_hyperv_reenlightenment); |
683 | DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0); |
684 | #endif |
685 | |
686 | #if IS_ENABLED(CONFIG_ACRN_GUEST) |
687 | DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_acrn_hv_callback); |
688 | #endif |
689 | |
690 | #ifdef CONFIG_XEN_PVHVM |
691 | DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_xen_hvm_callback); |
692 | #endif |
693 | |
694 | #ifdef CONFIG_KVM_GUEST |
695 | DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_kvm_asyncpf_interrupt); |
696 | #endif |
697 | |
698 | #undef X86_TRAP_OTHER |
699 | |
700 | #endif |
701 | |