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Thomas Gleixner53aaf262020-02-25 23:16:12 +01001/* 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__
Thomas Gleixner27d6b4d2020-07-23 00:00:04 +02009#include <linux/entry-common.h>
Thomas Gleixner63685582020-05-21 22:05:38 +020010#include <linux/hardirq.h>
11
12#include <asm/irq_stack.h>
Thomas Gleixner53aaf262020-02-25 23:16:12 +010013
Peter Zijlstraba1f2b22020-05-27 15:50:29 +020014bool idtentry_enter_nmi(struct pt_regs *regs);
15void idtentry_exit_nmi(struct pt_regs *regs, bool irq_state);
16
Thomas Gleixner53aaf262020-02-25 23:16:12 +010017/**
18 * DECLARE_IDTENTRY - Declare functions for simple IDT entry points
19 * No error code pushed by hardware
20 * @vector: Vector number (ignored for C)
21 * @func: Function name of the entry point
22 *
23 * Declares three functions:
24 * - The ASM entry point: asm_##func
25 * - The XEN PV trap entry point: xen_##func (maybe unused)
26 * - The C handler called from the ASM entry point
27 *
28 * Note: This is the C variant of DECLARE_IDTENTRY(). As the name says it
29 * declares the entry points for usage in C code. There is an ASM variant
30 * as well which is used to emit the entry stubs in entry_32/64.S.
31 */
32#define DECLARE_IDTENTRY(vector, func) \
33 asmlinkage void asm_##func(void); \
34 asmlinkage void xen_asm_##func(void); \
35 __visible void func(struct pt_regs *regs)
36
37/**
38 * DEFINE_IDTENTRY - Emit code for simple IDT entry points
39 * @func: Function name of the entry point
40 *
41 * @func is called from ASM entry code with interrupts disabled.
42 *
43 * The macro is written so it acts as function definition. Append the
44 * body with a pair of curly brackets.
45 *
Thomas Gleixnera27a0a52020-07-23 00:00:08 +020046 * irqentry_enter() contains common code which has to be invoked before
47 * arbitrary code in the body. irqentry_exit() contains common code
Thomas Gleixner53aaf262020-02-25 23:16:12 +010048 * which has to run before returning to the low level assembly code.
49 */
50#define DEFINE_IDTENTRY(func) \
51static __always_inline void __##func(struct pt_regs *regs); \
52 \
53__visible noinstr void func(struct pt_regs *regs) \
54{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +020055 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixnerfa95d7d2020-05-21 22:05:19 +020056 \
Thomas Gleixner53aaf262020-02-25 23:16:12 +010057 instrumentation_begin(); \
58 __##func (regs); \
59 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +020060 irqentry_exit(regs, state); \
Thomas Gleixner53aaf262020-02-25 23:16:12 +010061} \
62 \
63static __always_inline void __##func(struct pt_regs *regs)
64
Thomas Gleixnerd7729052020-02-25 23:16:30 +010065/* Special case for 32bit IRET 'trap' */
66#define DECLARE_IDTENTRY_SW DECLARE_IDTENTRY
67#define DEFINE_IDTENTRY_SW DEFINE_IDTENTRY
68
Thomas Gleixneraabfe532020-02-25 23:16:21 +010069/**
70 * DECLARE_IDTENTRY_ERRORCODE - Declare functions for simple IDT entry points
71 * Error code pushed by hardware
72 * @vector: Vector number (ignored for C)
73 * @func: Function name of the entry point
74 *
75 * Declares three functions:
76 * - The ASM entry point: asm_##func
77 * - The XEN PV trap entry point: xen_##func (maybe unused)
78 * - The C handler called from the ASM entry point
79 *
80 * Same as DECLARE_IDTENTRY, but has an extra error_code argument for the
81 * C-handler.
82 */
83#define DECLARE_IDTENTRY_ERRORCODE(vector, func) \
84 asmlinkage void asm_##func(void); \
85 asmlinkage void xen_asm_##func(void); \
86 __visible void func(struct pt_regs *regs, unsigned long error_code)
87
88/**
89 * DEFINE_IDTENTRY_ERRORCODE - Emit code for simple IDT entry points
90 * Error code pushed by hardware
91 * @func: Function name of the entry point
92 *
93 * Same as DEFINE_IDTENTRY, but has an extra error_code argument
94 */
95#define DEFINE_IDTENTRY_ERRORCODE(func) \
96static __always_inline void __##func(struct pt_regs *regs, \
97 unsigned long error_code); \
98 \
99__visible noinstr void func(struct pt_regs *regs, \
100 unsigned long error_code) \
101{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200102 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixnerfa95d7d2020-05-21 22:05:19 +0200103 \
Thomas Gleixneraabfe532020-02-25 23:16:21 +0100104 instrumentation_begin(); \
105 __##func (regs, error_code); \
106 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200107 irqentry_exit(regs, state); \
Thomas Gleixneraabfe532020-02-25 23:16:21 +0100108} \
109 \
110static __always_inline void __##func(struct pt_regs *regs, \
111 unsigned long error_code)
112
Thomas Gleixner0dc6cdc2020-03-04 15:22:09 +0100113/**
114 * DECLARE_IDTENTRY_RAW - Declare functions for raw IDT entry points
115 * No error code pushed by hardware
116 * @vector: Vector number (ignored for C)
117 * @func: Function name of the entry point
118 *
119 * Maps to DECLARE_IDTENTRY().
120 */
121#define DECLARE_IDTENTRY_RAW(vector, func) \
122 DECLARE_IDTENTRY(vector, func)
123
124/**
125 * DEFINE_IDTENTRY_RAW - Emit code for raw IDT entry points
126 * @func: Function name of the entry point
127 *
128 * @func is called from ASM entry code with interrupts disabled.
129 *
130 * The macro is written so it acts as function definition. Append the
131 * body with a pair of curly brackets.
132 *
133 * Contrary to DEFINE_IDTENTRY() this does not invoke the
134 * idtentry_enter/exit() helpers before and after the body invocation. This
135 * needs to be done in the body itself if applicable. Use if extra work
136 * is required before the enter/exit() helpers are invoked.
137 */
138#define DEFINE_IDTENTRY_RAW(func) \
139__visible noinstr void func(struct pt_regs *regs)
140
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100141/**
142 * DECLARE_IDTENTRY_RAW_ERRORCODE - Declare functions for raw IDT entry points
143 * Error code pushed by hardware
144 * @vector: Vector number (ignored for C)
145 * @func: Function name of the entry point
146 *
147 * Maps to DECLARE_IDTENTRY_ERRORCODE()
148 */
149#define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) \
150 DECLARE_IDTENTRY_ERRORCODE(vector, func)
151
152/**
153 * DEFINE_IDTENTRY_RAW_ERRORCODE - Emit code for raw IDT entry points
154 * @func: Function name of the entry point
155 *
156 * @func is called from ASM entry code with interrupts disabled.
157 *
158 * The macro is written so it acts as function definition. Append the
159 * body with a pair of curly brackets.
160 *
161 * Contrary to DEFINE_IDTENTRY_ERRORCODE() this does not invoke the
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200162 * irqentry_enter/exit() helpers before and after the body invocation. This
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100163 * needs to be done in the body itself if applicable. Use if extra work
164 * is required before the enter/exit() helpers are invoked.
165 */
166#define DEFINE_IDTENTRY_RAW_ERRORCODE(func) \
167__visible noinstr void func(struct pt_regs *regs, unsigned long error_code)
168
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200169/**
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200170 * DECLARE_IDTENTRY_IRQ - Declare functions for device interrupt IDT entry
171 * points (common/spurious)
172 * @vector: Vector number (ignored for C)
173 * @func: Function name of the entry point
174 *
175 * Maps to DECLARE_IDTENTRY_ERRORCODE()
176 */
177#define DECLARE_IDTENTRY_IRQ(vector, func) \
178 DECLARE_IDTENTRY_ERRORCODE(vector, func)
179
180/**
181 * DEFINE_IDTENTRY_IRQ - Emit code for device interrupt IDT entry points
182 * @func: Function name of the entry point
183 *
184 * The vector number is pushed by the low level entry stub and handed
185 * to the function as error_code argument which needs to be truncated
186 * to an u8 because the push is sign extending.
187 *
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200188 * irq_enter/exit_rcu() are invoked before the function body and the
Thomas Gleixner790ce3b2020-07-14 16:01:52 +0200189 * KVM L1D flush request is set. Stack switching to the interrupt stack
190 * has to be done in the function body if necessary.
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200191 */
192#define DEFINE_IDTENTRY_IRQ(func) \
193static __always_inline void __##func(struct pt_regs *regs, u8 vector); \
194 \
195__visible noinstr void func(struct pt_regs *regs, \
196 unsigned long error_code) \
197{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200198 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200199 \
200 instrumentation_begin(); \
201 irq_enter_rcu(); \
202 kvm_set_cpu_l1tf_flush_l1d(); \
203 __##func (regs, (u8)error_code); \
204 irq_exit_rcu(); \
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200205 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200206 irqentry_exit(regs, state); \
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200207} \
208 \
209static __always_inline void __##func(struct pt_regs *regs, u8 vector)
210
211/**
Thomas Gleixner63685582020-05-21 22:05:38 +0200212 * DECLARE_IDTENTRY_SYSVEC - Declare functions for system vector entry points
213 * @vector: Vector number (ignored for C)
214 * @func: Function name of the entry point
215 *
216 * Declares three functions:
217 * - The ASM entry point: asm_##func
218 * - The XEN PV trap entry point: xen_##func (maybe unused)
219 * - The C handler called from the ASM entry point
220 *
221 * Maps to DECLARE_IDTENTRY().
222 */
223#define DECLARE_IDTENTRY_SYSVEC(vector, func) \
224 DECLARE_IDTENTRY(vector, func)
225
226/**
227 * DEFINE_IDTENTRY_SYSVEC - Emit code for system vector IDT entry points
228 * @func: Function name of the entry point
229 *
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200230 * irqentry_enter/exit() and irq_enter/exit_rcu() are invoked before the
Thomas Gleixner63685582020-05-21 22:05:38 +0200231 * function body. KVM L1D flush request is set.
232 *
233 * Runs the function on the interrupt stack if the entry hit kernel mode
234 */
235#define DEFINE_IDTENTRY_SYSVEC(func) \
236static void __##func(struct pt_regs *regs); \
237 \
238__visible noinstr void func(struct pt_regs *regs) \
239{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200240 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200241 \
242 instrumentation_begin(); \
243 irq_enter_rcu(); \
244 kvm_set_cpu_l1tf_flush_l1d(); \
Thomas Gleixnera7b34742020-09-22 09:58:52 +0200245 run_sysvec_on_irqstack_cond(__##func, regs); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200246 irq_exit_rcu(); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200247 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200248 irqentry_exit(regs, state); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200249} \
250 \
251static noinline void __##func(struct pt_regs *regs)
252
253/**
254 * DEFINE_IDTENTRY_SYSVEC_SIMPLE - Emit code for simple system vector IDT
255 * entry points
256 * @func: Function name of the entry point
257 *
258 * Runs the function on the interrupted stack. No switch to IRQ stack and
259 * only the minimal __irq_enter/exit() handling.
260 *
261 * Only use for 'empty' vectors like reschedule IPI and KVM posted
262 * interrupt vectors.
263 */
264#define DEFINE_IDTENTRY_SYSVEC_SIMPLE(func) \
265static __always_inline void __##func(struct pt_regs *regs); \
266 \
267__visible noinstr void func(struct pt_regs *regs) \
268{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200269 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200270 \
271 instrumentation_begin(); \
272 __irq_enter_raw(); \
273 kvm_set_cpu_l1tf_flush_l1d(); \
274 __##func (regs); \
275 __irq_exit_raw(); \
276 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200277 irqentry_exit(regs, state); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200278} \
279 \
280static __always_inline void __##func(struct pt_regs *regs)
281
282/**
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200283 * DECLARE_IDTENTRY_XENCB - Declare functions for XEN HV callback entry point
284 * @vector: Vector number (ignored for C)
285 * @func: Function name of the entry point
286 *
287 * Declares three functions:
288 * - The ASM entry point: asm_##func
289 * - The XEN PV trap entry point: xen_##func (maybe unused)
290 * - The C handler called from the ASM entry point
291 *
292 * Maps to DECLARE_IDTENTRY(). Distinct entry point to handle the 32/64-bit
293 * difference
294 */
295#define DECLARE_IDTENTRY_XENCB(vector, func) \
296 DECLARE_IDTENTRY(vector, func)
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100297
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100298#ifdef CONFIG_X86_64
299/**
300 * DECLARE_IDTENTRY_IST - Declare functions for IST handling IDT entry points
301 * @vector: Vector number (ignored for C)
302 * @func: Function name of the entry point
303 *
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100304 * Maps to DECLARE_IDTENTRY_RAW, but declares also the NOIST C handler
305 * which is called from the ASM entry point on user mode entry
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100306 */
307#define DECLARE_IDTENTRY_IST(vector, func) \
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100308 DECLARE_IDTENTRY_RAW(vector, func); \
309 __visible void noist_##func(struct pt_regs *regs)
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100310
311/**
312 * DEFINE_IDTENTRY_IST - Emit code for IST entry points
313 * @func: Function name of the entry point
314 *
315 * Maps to DEFINE_IDTENTRY_RAW
316 */
317#define DEFINE_IDTENTRY_IST(func) \
318 DEFINE_IDTENTRY_RAW(func)
319
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100320/**
321 * DEFINE_IDTENTRY_NOIST - Emit code for NOIST entry points which
322 * belong to a IST entry point (MCE, DB)
323 * @func: Function name of the entry point. Must be the same as
324 * the function name of the corresponding IST variant
325 *
326 * Maps to DEFINE_IDTENTRY_RAW().
327 */
328#define DEFINE_IDTENTRY_NOIST(func) \
329 DEFINE_IDTENTRY_RAW(noist_##func)
330
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100331/**
332 * DECLARE_IDTENTRY_DF - Declare functions for double fault
333 * @vector: Vector number (ignored for C)
334 * @func: Function name of the entry point
335 *
336 * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE
337 */
338#define DECLARE_IDTENTRY_DF(vector, func) \
339 DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func)
340
341/**
342 * DEFINE_IDTENTRY_DF - Emit code for double fault
343 * @func: Function name of the entry point
344 *
345 * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
346 */
347#define DEFINE_IDTENTRY_DF(func) \
348 DEFINE_IDTENTRY_RAW_ERRORCODE(func)
349
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100350#else /* CONFIG_X86_64 */
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100351
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100352/**
353 * DECLARE_IDTENTRY_DF - Declare functions for double fault 32bit variant
354 * @vector: Vector number (ignored for C)
355 * @func: Function name of the entry point
356 *
357 * Declares two functions:
358 * - The ASM entry point: asm_##func
359 * - The C handler called from the C shim
360 */
361#define DECLARE_IDTENTRY_DF(vector, func) \
362 asmlinkage void asm_##func(void); \
363 __visible void func(struct pt_regs *regs, \
364 unsigned long error_code, \
365 unsigned long address)
366
367/**
368 * DEFINE_IDTENTRY_DF - Emit code for double fault on 32bit
369 * @func: Function name of the entry point
370 *
371 * This is called through the doublefault shim which already provides
372 * cr2 in the address argument.
373 */
374#define DEFINE_IDTENTRY_DF(func) \
375__visible noinstr void func(struct pt_regs *regs, \
376 unsigned long error_code, \
377 unsigned long address)
378
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100379#endif /* !CONFIG_X86_64 */
380
381/* C-Code mapping */
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700382#define DECLARE_IDTENTRY_NMI DECLARE_IDTENTRY_RAW
383#define DEFINE_IDTENTRY_NMI DEFINE_IDTENTRY_RAW
384
385#ifdef CONFIG_X86_64
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100386#define DECLARE_IDTENTRY_MCE DECLARE_IDTENTRY_IST
387#define DEFINE_IDTENTRY_MCE DEFINE_IDTENTRY_IST
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100388#define DEFINE_IDTENTRY_MCE_USER DEFINE_IDTENTRY_NOIST
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100389
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100390#define DECLARE_IDTENTRY_DEBUG DECLARE_IDTENTRY_IST
391#define DEFINE_IDTENTRY_DEBUG DEFINE_IDTENTRY_IST
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100392#define DEFINE_IDTENTRY_DEBUG_USER DEFINE_IDTENTRY_NOIST
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700393#endif
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100394
Thomas Gleixner53aaf262020-02-25 23:16:12 +0100395#else /* !__ASSEMBLY__ */
396
397/*
398 * The ASM variants for DECLARE_IDTENTRY*() which emit the ASM entry stubs.
399 */
400#define DECLARE_IDTENTRY(vector, func) \
Thomas Gleixnere2dcb5f2020-05-21 22:05:29 +0200401 idtentry vector asm_##func func has_error_code=0
Thomas Gleixner53aaf262020-02-25 23:16:12 +0100402
Thomas Gleixneraabfe532020-02-25 23:16:21 +0100403#define DECLARE_IDTENTRY_ERRORCODE(vector, func) \
Thomas Gleixnere2dcb5f2020-05-21 22:05:29 +0200404 idtentry vector asm_##func func has_error_code=1
Thomas Gleixneraabfe532020-02-25 23:16:21 +0100405
Thomas Gleixnerd7729052020-02-25 23:16:30 +0100406/* Special case for 32bit IRET 'trap'. Do not emit ASM code */
407#define DECLARE_IDTENTRY_SW(vector, func)
408
Thomas Gleixner0dc6cdc2020-03-04 15:22:09 +0100409#define DECLARE_IDTENTRY_RAW(vector, func) \
410 DECLARE_IDTENTRY(vector, func)
411
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100412#define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) \
413 DECLARE_IDTENTRY_ERRORCODE(vector, func)
414
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200415/* Entries for common/spurious (device) interrupts */
416#define DECLARE_IDTENTRY_IRQ(vector, func) \
417 idtentry_irq vector func
418
Thomas Gleixner63685582020-05-21 22:05:38 +0200419/* System vector entries */
420#define DECLARE_IDTENTRY_SYSVEC(vector, func) \
421 idtentry_sysvec vector func
422
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100423#ifdef CONFIG_X86_64
424# define DECLARE_IDTENTRY_MCE(vector, func) \
425 idtentry_mce_db vector asm_##func func
426
427# define DECLARE_IDTENTRY_DEBUG(vector, func) \
428 idtentry_mce_db vector asm_##func func
429
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100430# define DECLARE_IDTENTRY_DF(vector, func) \
431 idtentry_df vector asm_##func func
432
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200433# define DECLARE_IDTENTRY_XENCB(vector, func) \
434 DECLARE_IDTENTRY(vector, func)
435
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100436#else
437# define DECLARE_IDTENTRY_MCE(vector, func) \
438 DECLARE_IDTENTRY(vector, func)
439
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100440/* No ASM emitted for DF as this goes through a C shim */
441# define DECLARE_IDTENTRY_DF(vector, func)
442
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200443/* No ASM emitted for XEN hypervisor callback */
444# define DECLARE_IDTENTRY_XENCB(vector, func)
445
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100446#endif
447
448/* No ASM code emitted for NMI */
449#define DECLARE_IDTENTRY_NMI(vector, func)
450
Thomas Gleixner633260f2020-05-21 22:05:34 +0200451/*
452 * ASM code to emit the common vector entry stubs where each stub is
453 * packed into 8 bytes.
454 *
455 * Note, that the 'pushq imm8' is emitted via '.byte 0x6a, vector' because
456 * GCC treats the local vector variable as unsigned int and would expand
457 * all vectors above 0x7F to a 5 byte push. The original code did an
458 * adjustment of the vector number to be in the signed byte range to avoid
459 * this. While clever it's mindboggling counterintuitive and requires the
460 * odd conversion back to a real vector number in the C entry points. Using
461 * .byte achieves the same thing and the only fixup needed in the C entry
462 * point is to mask off the bits above bit 7 because the push is sign
463 * extending.
464 */
465 .align 8
466SYM_CODE_START(irq_entries_start)
467 vector=FIRST_EXTERNAL_VECTOR
Thomas Gleixner633260f2020-05-21 22:05:34 +0200468 .rept (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR)
469 UNWIND_HINT_IRET_REGS
Jian Cai6ee93f82020-07-14 16:30:21 -07004700 :
Thomas Gleixner633260f2020-05-21 22:05:34 +0200471 .byte 0x6a, vector
Thomas Gleixnerfa5e5c42020-05-21 22:05:37 +0200472 jmp asm_common_interrupt
Thomas Gleixner633260f2020-05-21 22:05:34 +0200473 nop
474 /* Ensure that the above is 8 bytes max */
Jian Cai6ee93f82020-07-14 16:30:21 -0700475 . = 0b + 8
476 vector = vector+1
Thomas Gleixner633260f2020-05-21 22:05:34 +0200477 .endr
478SYM_CODE_END(irq_entries_start)
479
480#ifdef CONFIG_X86_LOCAL_APIC
481 .align 8
482SYM_CODE_START(spurious_entries_start)
483 vector=FIRST_SYSTEM_VECTOR
Thomas Gleixner633260f2020-05-21 22:05:34 +0200484 .rept (NR_VECTORS - FIRST_SYSTEM_VECTOR)
485 UNWIND_HINT_IRET_REGS
Jian Cai6ee93f82020-07-14 16:30:21 -07004860 :
Thomas Gleixner633260f2020-05-21 22:05:34 +0200487 .byte 0x6a, vector
Thomas Gleixnerfa5e5c42020-05-21 22:05:37 +0200488 jmp asm_spurious_interrupt
Thomas Gleixner633260f2020-05-21 22:05:34 +0200489 nop
490 /* Ensure that the above is 8 bytes max */
Jian Cai6ee93f82020-07-14 16:30:21 -0700491 . = 0b + 8
492 vector = vector+1
Thomas Gleixner633260f2020-05-21 22:05:34 +0200493 .endr
494SYM_CODE_END(spurious_entries_start)
495#endif
496
Thomas Gleixner53aaf262020-02-25 23:16:12 +0100497#endif /* __ASSEMBLY__ */
498
Thomas Gleixner9d06c402020-02-25 23:16:14 +0100499/*
500 * The actual entry points. Note that DECLARE_IDTENTRY*() serves two
501 * purposes:
502 * - provide the function declarations when included from C-Code
503 * - emit the ASM stubs when included from entry_32/64.S
504 *
505 * This avoids duplicate defines and ensures that everything is consistent.
506 */
507
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200508/*
509 * Dummy trap number so the low level ASM macro vector number checks do not
510 * match which results in emitting plain IDTENTRY stubs without bells and
511 * whistels.
512 */
513#define X86_TRAP_OTHER 0xFFFF
514
Thomas Gleixner9d06c402020-02-25 23:16:14 +0100515/* Simple exception entry points. No hardware error code */
516DECLARE_IDTENTRY(X86_TRAP_DE, exc_divide_error);
Thomas Gleixner4b6b9112020-02-25 23:16:15 +0100517DECLARE_IDTENTRY(X86_TRAP_OF, exc_overflow);
Thomas Gleixner58d9c812020-02-25 23:16:17 +0100518DECLARE_IDTENTRY(X86_TRAP_BR, exc_bounds);
Thomas Gleixner866ae2c2020-02-25 23:16:19 +0100519DECLARE_IDTENTRY(X86_TRAP_NM, exc_device_not_available);
Thomas Gleixnerf95658f2020-02-25 23:16:20 +0100520DECLARE_IDTENTRY(X86_TRAP_OLD_MF, exc_coproc_segment_overrun);
Thomas Gleixnerdad71062020-02-25 23:16:26 +0100521DECLARE_IDTENTRY(X86_TRAP_SPURIOUS, exc_spurious_interrupt_bug);
Thomas Gleixner14a8bd22020-02-25 23:16:27 +0100522DECLARE_IDTENTRY(X86_TRAP_MF, exc_coprocessor_error);
Thomas Gleixner48227e22020-02-25 23:16:29 +0100523DECLARE_IDTENTRY(X86_TRAP_XF, exc_simd_coprocessor_error);
Thomas Gleixner9d06c402020-02-25 23:16:14 +0100524
Thomas Gleixnerd7729052020-02-25 23:16:30 +0100525/* 32bit software IRET trap. Do not emit ASM code */
526DECLARE_IDTENTRY_SW(X86_TRAP_IRET, iret_error);
527
Thomas Gleixner97b3d292020-02-25 23:16:22 +0100528/* Simple exception entries with error code pushed by hardware */
529DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_TS, exc_invalid_tss);
Thomas Gleixner99a3fb82020-02-25 23:16:23 +0100530DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_NP, exc_segment_not_present);
Thomas Gleixnerfd9689b2020-02-25 23:16:24 +0100531DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_SS, exc_stack_segment);
Thomas Gleixnerbe4c11a2020-02-25 23:16:25 +0100532DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_GP, exc_general_protection);
Thomas Gleixner436608b2020-02-25 23:16:28 +0100533DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_AC, exc_alignment_check);
Thomas Gleixner97b3d292020-02-25 23:16:22 +0100534
Thomas Gleixner8edd7e32020-02-25 23:16:16 +0100535/* Raw exception entries which need extra work */
Andy Lutomirski15a416e2020-06-11 20:26:38 -0700536DECLARE_IDTENTRY_RAW(X86_TRAP_UD, exc_invalid_op);
Thomas Gleixner91eeafe2020-05-21 22:05:28 +0200537DECLARE_IDTENTRY_RAW(X86_TRAP_BP, exc_int3);
538DECLARE_IDTENTRY_RAW_ERRORCODE(X86_TRAP_PF, exc_page_fault);
Thomas Gleixner8edd7e32020-02-25 23:16:16 +0100539
Thomas Gleixner8cd501c2020-02-25 23:33:23 +0100540#ifdef CONFIG_X86_MCE
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700541#ifdef CONFIG_X86_64
Thomas Gleixner8cd501c2020-02-25 23:33:23 +0100542DECLARE_IDTENTRY_MCE(X86_TRAP_MC, exc_machine_check);
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700543#else
544DECLARE_IDTENTRY_RAW(X86_TRAP_MC, exc_machine_check);
545#endif
Thomas Gleixner8cd501c2020-02-25 23:33:23 +0100546#endif
547
Thomas Gleixner6271fef2020-02-25 23:33:25 +0100548/* NMI */
549DECLARE_IDTENTRY_NMI(X86_TRAP_NMI, exc_nmi);
Ingo Molnara4c0e912020-07-05 21:33:11 +0200550#if defined(CONFIG_XEN_PV) && defined(CONFIG_X86_64)
Andy Lutomirskif41f0822020-07-03 10:02:55 -0700551DECLARE_IDTENTRY_RAW(X86_TRAP_NMI, xenpv_exc_nmi);
552#endif
Thomas Gleixner6271fef2020-02-25 23:33:25 +0100553
Thomas Gleixner2bbc68f2020-02-25 23:33:26 +0100554/* #DB */
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700555#ifdef CONFIG_X86_64
Thomas Gleixner2bbc68f2020-02-25 23:33:26 +0100556DECLARE_IDTENTRY_DEBUG(X86_TRAP_DB, exc_debug);
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700557#else
558DECLARE_IDTENTRY_RAW(X86_TRAP_DB, exc_debug);
559#endif
Ingo Molnara4c0e912020-07-05 21:33:11 +0200560#if defined(CONFIG_XEN_PV) && defined(CONFIG_X86_64)
Andy Lutomirskif41f0822020-07-03 10:02:55 -0700561DECLARE_IDTENTRY_RAW(X86_TRAP_DB, xenpv_exc_debug);
562#endif
Thomas Gleixner2bbc68f2020-02-25 23:33:26 +0100563
Thomas Gleixnerc29c7752020-02-25 23:33:31 +0100564/* #DF */
565DECLARE_IDTENTRY_DF(X86_TRAP_DF, exc_double_fault);
566
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200567#ifdef CONFIG_XEN_PV
568DECLARE_IDTENTRY_XENCB(X86_TRAP_OTHER, exc_xen_hypervisor_callback);
569#endif
570
Thomas Gleixnerfa5e5c42020-05-21 22:05:37 +0200571/* Device interrupts common/spurious */
572DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, common_interrupt);
573#ifdef CONFIG_X86_LOCAL_APIC
574DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, spurious_interrupt);
575#endif
576
Thomas Gleixnerdb0338e2020-05-21 22:05:39 +0200577/* System vector entry points */
578#ifdef CONFIG_X86_LOCAL_APIC
579DECLARE_IDTENTRY_SYSVEC(ERROR_APIC_VECTOR, sysvec_error_interrupt);
580DECLARE_IDTENTRY_SYSVEC(SPURIOUS_APIC_VECTOR, sysvec_spurious_apic_interrupt);
581DECLARE_IDTENTRY_SYSVEC(LOCAL_TIMER_VECTOR, sysvec_apic_timer_interrupt);
582DECLARE_IDTENTRY_SYSVEC(X86_PLATFORM_IPI_VECTOR, sysvec_x86_platform_ipi);
583#endif
584
Thomas Gleixner582f9192020-05-21 22:05:40 +0200585#ifdef CONFIG_SMP
Thomas Gleixner13cad9852020-05-21 22:05:45 +0200586DECLARE_IDTENTRY(RESCHEDULE_VECTOR, sysvec_reschedule_ipi);
Thomas Gleixner582f9192020-05-21 22:05:40 +0200587DECLARE_IDTENTRY_SYSVEC(IRQ_MOVE_CLEANUP_VECTOR, sysvec_irq_move_cleanup);
588DECLARE_IDTENTRY_SYSVEC(REBOOT_VECTOR, sysvec_reboot);
589DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_SINGLE_VECTOR, sysvec_call_function_single);
590DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_VECTOR, sysvec_call_function);
591#endif
592
Thomas Gleixner720909a2020-05-21 22:05:41 +0200593#ifdef CONFIG_X86_LOCAL_APIC
594# ifdef CONFIG_X86_UV
595DECLARE_IDTENTRY_SYSVEC(UV_BAU_MESSAGE, sysvec_uv_bau_message);
596# endif
597
598# ifdef CONFIG_X86_MCE_THRESHOLD
599DECLARE_IDTENTRY_SYSVEC(THRESHOLD_APIC_VECTOR, sysvec_threshold);
600# endif
601
602# ifdef CONFIG_X86_MCE_AMD
603DECLARE_IDTENTRY_SYSVEC(DEFERRED_ERROR_VECTOR, sysvec_deferred_error);
604# endif
605
606# ifdef CONFIG_X86_THERMAL_VECTOR
607DECLARE_IDTENTRY_SYSVEC(THERMAL_APIC_VECTOR, sysvec_thermal);
608# endif
609
610# ifdef CONFIG_IRQ_WORK
611DECLARE_IDTENTRY_SYSVEC(IRQ_WORK_VECTOR, sysvec_irq_work);
612# endif
613#endif
614
Thomas Gleixner9c3b1f42020-05-21 22:05:42 +0200615#ifdef CONFIG_HAVE_KVM
616DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_VECTOR, sysvec_kvm_posted_intr_ipi);
617DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_WAKEUP_VECTOR, sysvec_kvm_posted_intr_wakeup_ipi);
618DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_NESTED_VECTOR, sysvec_kvm_posted_intr_nested_ipi);
619#endif
620
Thomas Gleixnera16be362020-05-21 22:05:43 +0200621#if IS_ENABLED(CONFIG_HYPERV)
622DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_hyperv_callback);
Sedat Dilek5769fe22020-07-14 21:47:40 +0200623DECLARE_IDTENTRY_SYSVEC(HYPERV_REENLIGHTENMENT_VECTOR, sysvec_hyperv_reenlightenment);
624DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0);
Thomas Gleixnera16be362020-05-21 22:05:43 +0200625#endif
626
627#if IS_ENABLED(CONFIG_ACRN_GUEST)
628DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_acrn_hv_callback);
629#endif
630
Thomas Gleixnercb09ea22020-05-21 22:05:44 +0200631#ifdef CONFIG_XEN_PVHVM
632DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_xen_hvm_callback);
633#endif
634
Paolo Bonzini26d05b32020-06-15 07:53:05 -0400635#ifdef CONFIG_KVM_GUEST
636DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_kvm_asyncpf_interrupt);
637#endif
638
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200639#undef X86_TRAP_OTHER
640
Thomas Gleixner53aaf262020-02-25 23:16:12 +0100641#endif