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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
Thomas Gleixner53aaf262020-02-25 23:16:12 +010014/**
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 *
Thomas Gleixnera27a0a52020-07-23 00:00:08 +020043 * irqentry_enter() contains common code which has to be invoked before
44 * arbitrary code in the body. irqentry_exit() contains common code
Thomas Gleixner53aaf262020-02-25 23:16:12 +010045 * which has to run before returning to the low level assembly code.
46 */
47#define DEFINE_IDTENTRY(func) \
48static __always_inline void __##func(struct pt_regs *regs); \
49 \
50__visible noinstr void func(struct pt_regs *regs) \
51{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +020052 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixnerfa95d7d2020-05-21 22:05:19 +020053 \
Thomas Gleixner53aaf262020-02-25 23:16:12 +010054 instrumentation_begin(); \
55 __##func (regs); \
56 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +020057 irqentry_exit(regs, state); \
Thomas Gleixner53aaf262020-02-25 23:16:12 +010058} \
59 \
60static __always_inline void __##func(struct pt_regs *regs)
61
Thomas Gleixnerd7729052020-02-25 23:16:30 +010062/* Special case for 32bit IRET 'trap' */
63#define DECLARE_IDTENTRY_SW DECLARE_IDTENTRY
64#define DEFINE_IDTENTRY_SW DEFINE_IDTENTRY
65
Thomas Gleixneraabfe532020-02-25 23:16:21 +010066/**
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) \
93static __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{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +020099 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixnerfa95d7d2020-05-21 22:05:19 +0200100 \
Thomas Gleixneraabfe532020-02-25 23:16:21 +0100101 instrumentation_begin(); \
102 __##func (regs, error_code); \
103 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200104 irqentry_exit(regs, state); \
Thomas Gleixneraabfe532020-02-25 23:16:21 +0100105} \
106 \
107static __always_inline void __##func(struct pt_regs *regs, \
108 unsigned long error_code)
109
Thomas Gleixner0dc6cdc2020-03-04 15:22:09 +0100110/**
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
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100138/**
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
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200159 * irqentry_enter/exit() helpers before and after the body invocation. This
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100160 * 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
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200166/**
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200167 * 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 *
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200185 * irq_enter/exit_rcu() are invoked before the function body and the
Thomas Gleixner790ce3b2020-07-14 16:01:52 +0200186 * KVM L1D flush request is set. Stack switching to the interrupt stack
187 * has to be done in the function body if necessary.
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200188 */
189#define DEFINE_IDTENTRY_IRQ(func) \
Thomas Gleixner5b51e1d2021-02-10 00:40:48 +0100190static void __##func(struct pt_regs *regs, u32 vector); \
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200191 \
192__visible noinstr void func(struct pt_regs *regs, \
193 unsigned long error_code) \
194{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200195 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixner5b51e1d2021-02-10 00:40:48 +0100196 u32 vector = (u32)(u8)error_code; \
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200197 \
198 instrumentation_begin(); \
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200199 kvm_set_cpu_l1tf_flush_l1d(); \
Thomas Gleixner5b51e1d2021-02-10 00:40:48 +0100200 run_irq_on_irqstack_cond(__##func, regs, vector); \
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200201 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200202 irqentry_exit(regs, state); \
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200203} \
204 \
Thomas Gleixner5b51e1d2021-02-10 00:40:48 +0100205static noinline void __##func(struct pt_regs *regs, u32 vector)
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200206
207/**
Thomas Gleixner63685582020-05-21 22:05:38 +0200208 * DECLARE_IDTENTRY_SYSVEC - Declare functions for system vector entry points
209 * @vector: Vector number (ignored for C)
210 * @func: Function name of the entry point
211 *
212 * Declares three functions:
213 * - The ASM entry point: asm_##func
214 * - The XEN PV trap entry point: xen_##func (maybe unused)
215 * - The C handler called from the ASM entry point
216 *
217 * Maps to DECLARE_IDTENTRY().
218 */
219#define DECLARE_IDTENTRY_SYSVEC(vector, func) \
220 DECLARE_IDTENTRY(vector, func)
221
222/**
223 * DEFINE_IDTENTRY_SYSVEC - Emit code for system vector IDT entry points
224 * @func: Function name of the entry point
225 *
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200226 * irqentry_enter/exit() and irq_enter/exit_rcu() are invoked before the
Thomas Gleixner63685582020-05-21 22:05:38 +0200227 * function body. KVM L1D flush request is set.
228 *
229 * Runs the function on the interrupt stack if the entry hit kernel mode
230 */
231#define DEFINE_IDTENTRY_SYSVEC(func) \
232static void __##func(struct pt_regs *regs); \
233 \
234__visible noinstr void func(struct pt_regs *regs) \
235{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200236 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200237 \
238 instrumentation_begin(); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200239 kvm_set_cpu_l1tf_flush_l1d(); \
Thomas Gleixnera7b34742020-09-22 09:58:52 +0200240 run_sysvec_on_irqstack_cond(__##func, regs); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200241 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200242 irqentry_exit(regs, state); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200243} \
244 \
245static noinline void __##func(struct pt_regs *regs)
246
247/**
248 * DEFINE_IDTENTRY_SYSVEC_SIMPLE - Emit code for simple system vector IDT
249 * entry points
250 * @func: Function name of the entry point
251 *
252 * Runs the function on the interrupted stack. No switch to IRQ stack and
253 * only the minimal __irq_enter/exit() handling.
254 *
255 * Only use for 'empty' vectors like reschedule IPI and KVM posted
256 * interrupt vectors.
257 */
258#define DEFINE_IDTENTRY_SYSVEC_SIMPLE(func) \
259static __always_inline void __##func(struct pt_regs *regs); \
260 \
261__visible noinstr void func(struct pt_regs *regs) \
262{ \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200263 irqentry_state_t state = irqentry_enter(regs); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200264 \
265 instrumentation_begin(); \
266 __irq_enter_raw(); \
267 kvm_set_cpu_l1tf_flush_l1d(); \
268 __##func (regs); \
269 __irq_exit_raw(); \
270 instrumentation_end(); \
Thomas Gleixnera27a0a52020-07-23 00:00:08 +0200271 irqentry_exit(regs, state); \
Thomas Gleixner63685582020-05-21 22:05:38 +0200272} \
273 \
274static __always_inline void __##func(struct pt_regs *regs)
275
276/**
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200277 * DECLARE_IDTENTRY_XENCB - Declare functions for XEN HV callback entry point
278 * @vector: Vector number (ignored for C)
279 * @func: Function name of the entry point
280 *
281 * Declares three functions:
282 * - The ASM entry point: asm_##func
283 * - The XEN PV trap entry point: xen_##func (maybe unused)
284 * - The C handler called from the ASM entry point
285 *
286 * Maps to DECLARE_IDTENTRY(). Distinct entry point to handle the 32/64-bit
287 * difference
288 */
289#define DECLARE_IDTENTRY_XENCB(vector, func) \
290 DECLARE_IDTENTRY(vector, func)
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100291
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100292#ifdef CONFIG_X86_64
293/**
294 * DECLARE_IDTENTRY_IST - Declare functions for IST handling IDT entry points
295 * @vector: Vector number (ignored for C)
296 * @func: Function name of the entry point
297 *
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100298 * Maps to DECLARE_IDTENTRY_RAW, but declares also the NOIST C handler
299 * which is called from the ASM entry point on user mode entry
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100300 */
301#define DECLARE_IDTENTRY_IST(vector, func) \
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100302 DECLARE_IDTENTRY_RAW(vector, func); \
303 __visible void noist_##func(struct pt_regs *regs)
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100304
305/**
Joerg Roedela13644f2020-09-07 15:15:46 +0200306 * DECLARE_IDTENTRY_VC - Declare functions for the VC entry point
307 * @vector: Vector number (ignored for C)
308 * @func: Function name of the entry point
309 *
310 * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE, but declares also the
311 * safe_stack C handler.
312 */
313#define DECLARE_IDTENTRY_VC(vector, func) \
314 DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func); \
Tom Lendacky0786138c2020-09-07 15:15:47 +0200315 __visible noinstr void ist_##func(struct pt_regs *regs, unsigned long error_code); \
Joerg Roedela13644f2020-09-07 15:15:46 +0200316 __visible noinstr void safe_stack_##func(struct pt_regs *regs, unsigned long error_code)
317
318/**
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100319 * DEFINE_IDTENTRY_IST - Emit code for IST entry points
320 * @func: Function name of the entry point
321 *
322 * Maps to DEFINE_IDTENTRY_RAW
323 */
324#define DEFINE_IDTENTRY_IST(func) \
325 DEFINE_IDTENTRY_RAW(func)
326
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100327/**
328 * DEFINE_IDTENTRY_NOIST - Emit code for NOIST entry points which
329 * belong to a IST entry point (MCE, DB)
330 * @func: Function name of the entry point. Must be the same as
331 * the function name of the corresponding IST variant
332 *
333 * Maps to DEFINE_IDTENTRY_RAW().
334 */
335#define DEFINE_IDTENTRY_NOIST(func) \
336 DEFINE_IDTENTRY_RAW(noist_##func)
337
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100338/**
339 * DECLARE_IDTENTRY_DF - Declare functions for double fault
340 * @vector: Vector number (ignored for C)
341 * @func: Function name of the entry point
342 *
343 * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE
344 */
345#define DECLARE_IDTENTRY_DF(vector, func) \
346 DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func)
347
348/**
349 * DEFINE_IDTENTRY_DF - Emit code for double fault
350 * @func: Function name of the entry point
351 *
352 * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
353 */
354#define DEFINE_IDTENTRY_DF(func) \
355 DEFINE_IDTENTRY_RAW_ERRORCODE(func)
356
Joerg Roedela13644f2020-09-07 15:15:46 +0200357/**
358 * DEFINE_IDTENTRY_VC_SAFE_STACK - Emit code for VMM communication handler
359 which runs on a safe stack.
360 * @func: Function name of the entry point
361 *
362 * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
363 */
364#define DEFINE_IDTENTRY_VC_SAFE_STACK(func) \
365 DEFINE_IDTENTRY_RAW_ERRORCODE(safe_stack_##func)
366
367/**
368 * DEFINE_IDTENTRY_VC_IST - Emit code for VMM communication handler
369 which runs on the VC fall-back stack
370 * @func: Function name of the entry point
371 *
372 * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
373 */
374#define DEFINE_IDTENTRY_VC_IST(func) \
375 DEFINE_IDTENTRY_RAW_ERRORCODE(ist_##func)
376
377/**
378 * DEFINE_IDTENTRY_VC - Emit code for VMM communication handler
379 * @func: Function name of the entry point
380 *
381 * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
382 */
383#define DEFINE_IDTENTRY_VC(func) \
384 DEFINE_IDTENTRY_RAW_ERRORCODE(func)
385
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100386#else /* CONFIG_X86_64 */
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100387
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100388/**
389 * DECLARE_IDTENTRY_DF - Declare functions for double fault 32bit variant
390 * @vector: Vector number (ignored for C)
391 * @func: Function name of the entry point
392 *
393 * Declares two functions:
394 * - The ASM entry point: asm_##func
395 * - The C handler called from the C shim
396 */
397#define DECLARE_IDTENTRY_DF(vector, func) \
398 asmlinkage void asm_##func(void); \
399 __visible void func(struct pt_regs *regs, \
400 unsigned long error_code, \
401 unsigned long address)
402
403/**
404 * DEFINE_IDTENTRY_DF - Emit code for double fault on 32bit
405 * @func: Function name of the entry point
406 *
407 * This is called through the doublefault shim which already provides
408 * cr2 in the address argument.
409 */
410#define DEFINE_IDTENTRY_DF(func) \
411__visible noinstr void func(struct pt_regs *regs, \
412 unsigned long error_code, \
413 unsigned long address)
414
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100415#endif /* !CONFIG_X86_64 */
416
417/* C-Code mapping */
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700418#define DECLARE_IDTENTRY_NMI DECLARE_IDTENTRY_RAW
419#define DEFINE_IDTENTRY_NMI DEFINE_IDTENTRY_RAW
420
421#ifdef CONFIG_X86_64
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100422#define DECLARE_IDTENTRY_MCE DECLARE_IDTENTRY_IST
423#define DEFINE_IDTENTRY_MCE DEFINE_IDTENTRY_IST
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100424#define DEFINE_IDTENTRY_MCE_USER DEFINE_IDTENTRY_NOIST
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100425
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100426#define DECLARE_IDTENTRY_DEBUG DECLARE_IDTENTRY_IST
427#define DEFINE_IDTENTRY_DEBUG DEFINE_IDTENTRY_IST
Thomas Gleixnerf08e32e2020-02-25 23:33:28 +0100428#define DEFINE_IDTENTRY_DEBUG_USER DEFINE_IDTENTRY_NOIST
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700429#endif
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100430
Thomas Gleixner53aaf262020-02-25 23:16:12 +0100431#else /* !__ASSEMBLY__ */
432
433/*
434 * The ASM variants for DECLARE_IDTENTRY*() which emit the ASM entry stubs.
435 */
436#define DECLARE_IDTENTRY(vector, func) \
Thomas Gleixnere2dcb5f2020-05-21 22:05:29 +0200437 idtentry vector asm_##func func has_error_code=0
Thomas Gleixner53aaf262020-02-25 23:16:12 +0100438
Thomas Gleixneraabfe532020-02-25 23:16:21 +0100439#define DECLARE_IDTENTRY_ERRORCODE(vector, func) \
Thomas Gleixnere2dcb5f2020-05-21 22:05:29 +0200440 idtentry vector asm_##func func has_error_code=1
Thomas Gleixneraabfe532020-02-25 23:16:21 +0100441
Thomas Gleixnerd7729052020-02-25 23:16:30 +0100442/* Special case for 32bit IRET 'trap'. Do not emit ASM code */
443#define DECLARE_IDTENTRY_SW(vector, func)
444
Thomas Gleixner0dc6cdc2020-03-04 15:22:09 +0100445#define DECLARE_IDTENTRY_RAW(vector, func) \
446 DECLARE_IDTENTRY(vector, func)
447
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100448#define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) \
449 DECLARE_IDTENTRY_ERRORCODE(vector, func)
450
Thomas Gleixner0bf7c312020-05-21 22:05:36 +0200451/* Entries for common/spurious (device) interrupts */
452#define DECLARE_IDTENTRY_IRQ(vector, func) \
453 idtentry_irq vector func
454
Thomas Gleixner63685582020-05-21 22:05:38 +0200455/* System vector entries */
456#define DECLARE_IDTENTRY_SYSVEC(vector, func) \
457 idtentry_sysvec vector func
458
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100459#ifdef CONFIG_X86_64
460# define DECLARE_IDTENTRY_MCE(vector, func) \
461 idtentry_mce_db vector asm_##func func
462
463# define DECLARE_IDTENTRY_DEBUG(vector, func) \
464 idtentry_mce_db vector asm_##func func
465
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100466# define DECLARE_IDTENTRY_DF(vector, func) \
467 idtentry_df vector asm_##func func
468
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200469# define DECLARE_IDTENTRY_XENCB(vector, func) \
470 DECLARE_IDTENTRY(vector, func)
471
Joerg Roedela13644f2020-09-07 15:15:46 +0200472# define DECLARE_IDTENTRY_VC(vector, func) \
473 idtentry_vc vector asm_##func func
474
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100475#else
476# define DECLARE_IDTENTRY_MCE(vector, func) \
477 DECLARE_IDTENTRY(vector, func)
478
Thomas Gleixner6a8dfa82020-02-25 23:33:30 +0100479/* No ASM emitted for DF as this goes through a C shim */
480# define DECLARE_IDTENTRY_DF(vector, func)
481
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200482/* No ASM emitted for XEN hypervisor callback */
483# define DECLARE_IDTENTRY_XENCB(vector, func)
484
Thomas Gleixner2c058b02020-02-25 23:33:22 +0100485#endif
486
487/* No ASM code emitted for NMI */
488#define DECLARE_IDTENTRY_NMI(vector, func)
489
Thomas Gleixner633260f2020-05-21 22:05:34 +0200490/*
491 * ASM code to emit the common vector entry stubs where each stub is
492 * packed into 8 bytes.
493 *
494 * Note, that the 'pushq imm8' is emitted via '.byte 0x6a, vector' because
495 * GCC treats the local vector variable as unsigned int and would expand
496 * all vectors above 0x7F to a 5 byte push. The original code did an
497 * adjustment of the vector number to be in the signed byte range to avoid
498 * this. While clever it's mindboggling counterintuitive and requires the
499 * odd conversion back to a real vector number in the C entry points. Using
500 * .byte achieves the same thing and the only fixup needed in the C entry
501 * point is to mask off the bits above bit 7 because the push is sign
502 * extending.
503 */
504 .align 8
505SYM_CODE_START(irq_entries_start)
506 vector=FIRST_EXTERNAL_VECTOR
Thomas Gleixner633260f2020-05-21 22:05:34 +0200507 .rept (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR)
508 UNWIND_HINT_IRET_REGS
Jian Cai6ee93f82020-07-14 16:30:21 -07005090 :
Thomas Gleixner633260f2020-05-21 22:05:34 +0200510 .byte 0x6a, vector
Thomas Gleixnerfa5e5c42020-05-21 22:05:37 +0200511 jmp asm_common_interrupt
Thomas Gleixner633260f2020-05-21 22:05:34 +0200512 nop
513 /* Ensure that the above is 8 bytes max */
Jian Cai6ee93f82020-07-14 16:30:21 -0700514 . = 0b + 8
515 vector = vector+1
Thomas Gleixner633260f2020-05-21 22:05:34 +0200516 .endr
517SYM_CODE_END(irq_entries_start)
518
519#ifdef CONFIG_X86_LOCAL_APIC
520 .align 8
521SYM_CODE_START(spurious_entries_start)
522 vector=FIRST_SYSTEM_VECTOR
Thomas Gleixner633260f2020-05-21 22:05:34 +0200523 .rept (NR_VECTORS - FIRST_SYSTEM_VECTOR)
524 UNWIND_HINT_IRET_REGS
Jian Cai6ee93f82020-07-14 16:30:21 -07005250 :
Thomas Gleixner633260f2020-05-21 22:05:34 +0200526 .byte 0x6a, vector
Thomas Gleixnerfa5e5c42020-05-21 22:05:37 +0200527 jmp asm_spurious_interrupt
Thomas Gleixner633260f2020-05-21 22:05:34 +0200528 nop
529 /* Ensure that the above is 8 bytes max */
Jian Cai6ee93f82020-07-14 16:30:21 -0700530 . = 0b + 8
531 vector = vector+1
Thomas Gleixner633260f2020-05-21 22:05:34 +0200532 .endr
533SYM_CODE_END(spurious_entries_start)
534#endif
535
Thomas Gleixner53aaf262020-02-25 23:16:12 +0100536#endif /* __ASSEMBLY__ */
537
Thomas Gleixner9d06c402020-02-25 23:16:14 +0100538/*
539 * The actual entry points. Note that DECLARE_IDTENTRY*() serves two
540 * purposes:
541 * - provide the function declarations when included from C-Code
542 * - emit the ASM stubs when included from entry_32/64.S
543 *
544 * This avoids duplicate defines and ensures that everything is consistent.
545 */
546
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200547/*
548 * Dummy trap number so the low level ASM macro vector number checks do not
549 * match which results in emitting plain IDTENTRY stubs without bells and
550 * whistels.
551 */
552#define X86_TRAP_OTHER 0xFFFF
553
Thomas Gleixner9d06c402020-02-25 23:16:14 +0100554/* Simple exception entry points. No hardware error code */
555DECLARE_IDTENTRY(X86_TRAP_DE, exc_divide_error);
Thomas Gleixner4b6b9112020-02-25 23:16:15 +0100556DECLARE_IDTENTRY(X86_TRAP_OF, exc_overflow);
Thomas Gleixner58d9c812020-02-25 23:16:17 +0100557DECLARE_IDTENTRY(X86_TRAP_BR, exc_bounds);
Thomas Gleixner866ae2c2020-02-25 23:16:19 +0100558DECLARE_IDTENTRY(X86_TRAP_NM, exc_device_not_available);
Thomas Gleixnerf95658f2020-02-25 23:16:20 +0100559DECLARE_IDTENTRY(X86_TRAP_OLD_MF, exc_coproc_segment_overrun);
Thomas Gleixnerdad71062020-02-25 23:16:26 +0100560DECLARE_IDTENTRY(X86_TRAP_SPURIOUS, exc_spurious_interrupt_bug);
Thomas Gleixner14a8bd22020-02-25 23:16:27 +0100561DECLARE_IDTENTRY(X86_TRAP_MF, exc_coprocessor_error);
Thomas Gleixner48227e22020-02-25 23:16:29 +0100562DECLARE_IDTENTRY(X86_TRAP_XF, exc_simd_coprocessor_error);
Thomas Gleixner9d06c402020-02-25 23:16:14 +0100563
Thomas Gleixnerd7729052020-02-25 23:16:30 +0100564/* 32bit software IRET trap. Do not emit ASM code */
565DECLARE_IDTENTRY_SW(X86_TRAP_IRET, iret_error);
566
Thomas Gleixner97b3d292020-02-25 23:16:22 +0100567/* Simple exception entries with error code pushed by hardware */
568DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_TS, exc_invalid_tss);
Thomas Gleixner99a3fb82020-02-25 23:16:23 +0100569DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_NP, exc_segment_not_present);
Thomas Gleixnerfd9689b2020-02-25 23:16:24 +0100570DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_SS, exc_stack_segment);
Thomas Gleixnerbe4c11a2020-02-25 23:16:25 +0100571DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_GP, exc_general_protection);
Thomas Gleixner436608b2020-02-25 23:16:28 +0100572DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_AC, exc_alignment_check);
Thomas Gleixner97b3d292020-02-25 23:16:22 +0100573
Thomas Gleixner8edd7e32020-02-25 23:16:16 +0100574/* Raw exception entries which need extra work */
Andy Lutomirski15a416e2020-06-11 20:26:38 -0700575DECLARE_IDTENTRY_RAW(X86_TRAP_UD, exc_invalid_op);
Thomas Gleixner91eeafe2020-05-21 22:05:28 +0200576DECLARE_IDTENTRY_RAW(X86_TRAP_BP, exc_int3);
577DECLARE_IDTENTRY_RAW_ERRORCODE(X86_TRAP_PF, exc_page_fault);
Thomas Gleixner8edd7e32020-02-25 23:16:16 +0100578
Thomas Gleixner8cd501c2020-02-25 23:33:23 +0100579#ifdef CONFIG_X86_MCE
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700580#ifdef CONFIG_X86_64
Thomas Gleixner8cd501c2020-02-25 23:33:23 +0100581DECLARE_IDTENTRY_MCE(X86_TRAP_MC, exc_machine_check);
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700582#else
583DECLARE_IDTENTRY_RAW(X86_TRAP_MC, exc_machine_check);
584#endif
Juergen Grossc3d7fa62021-01-20 14:55:42 +0100585#ifdef CONFIG_XEN_PV
586DECLARE_IDTENTRY_RAW(X86_TRAP_MC, xenpv_exc_machine_check);
587#endif
Thomas Gleixner8cd501c2020-02-25 23:33:23 +0100588#endif
589
Thomas Gleixner6271fef2020-02-25 23:33:25 +0100590/* NMI */
591DECLARE_IDTENTRY_NMI(X86_TRAP_NMI, exc_nmi);
Juergen Gross76fdb042020-08-15 12:06:39 +0200592#ifdef CONFIG_XEN_PV
Andy Lutomirskif41f0822020-07-03 10:02:55 -0700593DECLARE_IDTENTRY_RAW(X86_TRAP_NMI, xenpv_exc_nmi);
594#endif
Thomas Gleixner6271fef2020-02-25 23:33:25 +0100595
Thomas Gleixner2bbc68f2020-02-25 23:33:26 +0100596/* #DB */
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700597#ifdef CONFIG_X86_64
Thomas Gleixner2bbc68f2020-02-25 23:33:26 +0100598DECLARE_IDTENTRY_DEBUG(X86_TRAP_DB, exc_debug);
Andy Lutomirski13cbc0c2020-07-03 10:02:56 -0700599#else
600DECLARE_IDTENTRY_RAW(X86_TRAP_DB, exc_debug);
601#endif
Juergen Gross76fdb042020-08-15 12:06:39 +0200602#ifdef CONFIG_XEN_PV
Andy Lutomirskif41f0822020-07-03 10:02:55 -0700603DECLARE_IDTENTRY_RAW(X86_TRAP_DB, xenpv_exc_debug);
604#endif
Thomas Gleixner2bbc68f2020-02-25 23:33:26 +0100605
Thomas Gleixnerc29c7752020-02-25 23:33:31 +0100606/* #DF */
607DECLARE_IDTENTRY_DF(X86_TRAP_DF, exc_double_fault);
Juergen Gross5b4c6d62021-01-20 14:55:43 +0100608#ifdef CONFIG_XEN_PV
609DECLARE_IDTENTRY_RAW_ERRORCODE(X86_TRAP_DF, xenpv_exc_double_fault);
610#endif
Thomas Gleixnerc29c7752020-02-25 23:33:31 +0100611
Tom Lendacky0786138c2020-09-07 15:15:47 +0200612/* #VC */
613#ifdef CONFIG_AMD_MEM_ENCRYPT
614DECLARE_IDTENTRY_VC(X86_TRAP_VC, exc_vmm_communication);
615#endif
616
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200617#ifdef CONFIG_XEN_PV
618DECLARE_IDTENTRY_XENCB(X86_TRAP_OTHER, exc_xen_hypervisor_callback);
Juergen Gross2e924932021-01-25 14:42:07 +0100619DECLARE_IDTENTRY_RAW(X86_TRAP_OTHER, exc_xen_unknown_trap);
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200620#endif
621
Thomas Gleixnerfa5e5c42020-05-21 22:05:37 +0200622/* Device interrupts common/spurious */
623DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, common_interrupt);
624#ifdef CONFIG_X86_LOCAL_APIC
625DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, spurious_interrupt);
626#endif
627
Thomas Gleixnerdb0338e2020-05-21 22:05:39 +0200628/* System vector entry points */
629#ifdef CONFIG_X86_LOCAL_APIC
630DECLARE_IDTENTRY_SYSVEC(ERROR_APIC_VECTOR, sysvec_error_interrupt);
631DECLARE_IDTENTRY_SYSVEC(SPURIOUS_APIC_VECTOR, sysvec_spurious_apic_interrupt);
632DECLARE_IDTENTRY_SYSVEC(LOCAL_TIMER_VECTOR, sysvec_apic_timer_interrupt);
633DECLARE_IDTENTRY_SYSVEC(X86_PLATFORM_IPI_VECTOR, sysvec_x86_platform_ipi);
634#endif
635
Thomas Gleixner582f9192020-05-21 22:05:40 +0200636#ifdef CONFIG_SMP
Thomas Gleixner13cad9852020-05-21 22:05:45 +0200637DECLARE_IDTENTRY(RESCHEDULE_VECTOR, sysvec_reschedule_ipi);
Thomas Gleixner582f9192020-05-21 22:05:40 +0200638DECLARE_IDTENTRY_SYSVEC(IRQ_MOVE_CLEANUP_VECTOR, sysvec_irq_move_cleanup);
639DECLARE_IDTENTRY_SYSVEC(REBOOT_VECTOR, sysvec_reboot);
640DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_SINGLE_VECTOR, sysvec_call_function_single);
641DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_VECTOR, sysvec_call_function);
642#endif
643
Thomas Gleixner720909a2020-05-21 22:05:41 +0200644#ifdef CONFIG_X86_LOCAL_APIC
Thomas Gleixner720909a2020-05-21 22:05:41 +0200645# ifdef CONFIG_X86_MCE_THRESHOLD
646DECLARE_IDTENTRY_SYSVEC(THRESHOLD_APIC_VECTOR, sysvec_threshold);
647# endif
648
649# ifdef CONFIG_X86_MCE_AMD
650DECLARE_IDTENTRY_SYSVEC(DEFERRED_ERROR_VECTOR, sysvec_deferred_error);
651# endif
652
653# ifdef CONFIG_X86_THERMAL_VECTOR
654DECLARE_IDTENTRY_SYSVEC(THERMAL_APIC_VECTOR, sysvec_thermal);
655# endif
656
657# ifdef CONFIG_IRQ_WORK
658DECLARE_IDTENTRY_SYSVEC(IRQ_WORK_VECTOR, sysvec_irq_work);
659# endif
660#endif
661
Thomas Gleixner9c3b1f42020-05-21 22:05:42 +0200662#ifdef CONFIG_HAVE_KVM
663DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_VECTOR, sysvec_kvm_posted_intr_ipi);
664DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_WAKEUP_VECTOR, sysvec_kvm_posted_intr_wakeup_ipi);
665DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_NESTED_VECTOR, sysvec_kvm_posted_intr_nested_ipi);
666#endif
667
Thomas Gleixnera16be362020-05-21 22:05:43 +0200668#if IS_ENABLED(CONFIG_HYPERV)
669DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_hyperv_callback);
Sedat Dilek5769fe22020-07-14 21:47:40 +0200670DECLARE_IDTENTRY_SYSVEC(HYPERV_REENLIGHTENMENT_VECTOR, sysvec_hyperv_reenlightenment);
671DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0);
Thomas Gleixnera16be362020-05-21 22:05:43 +0200672#endif
673
674#if IS_ENABLED(CONFIG_ACRN_GUEST)
675DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_acrn_hv_callback);
676#endif
677
Thomas Gleixnercb09ea22020-05-21 22:05:44 +0200678#ifdef CONFIG_XEN_PVHVM
679DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_xen_hvm_callback);
680#endif
681
Paolo Bonzini26d05b32020-06-15 07:53:05 -0400682#ifdef CONFIG_KVM_GUEST
683DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_kvm_asyncpf_interrupt);
684#endif
685
Thomas Gleixner2f6474e2020-05-21 22:05:26 +0200686#undef X86_TRAP_OTHER
687
Thomas Gleixner53aaf262020-02-25 23:16:12 +0100688#endif