1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _ASM_X86_IDTENTRY_H
3 #define _ASM_X86_IDTENTRY_H
5 /* Interrupts/Exceptions */
6 #include <asm/trapnr.h>
9 #include <linux/entry-common.h>
10 #include <linux/hardirq.h>
12 #include <asm/irq_stack.h>
14 bool idtentry_enter_nmi(struct pt_regs *regs);
15 void idtentry_exit_nmi(struct pt_regs *regs, bool irq_state);
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
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
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.
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)
38 * DEFINE_IDTENTRY - Emit code for simple IDT entry points
39 * @func: Function name of the entry point
41 * @func is called from ASM entry code with interrupts disabled.
43 * The macro is written so it acts as function definition. Append the
44 * body with a pair of curly brackets.
46 * irqentry_enter() contains common code which has to be invoked before
47 * arbitrary code in the body. irqentry_exit() contains common code
48 * which has to run before returning to the low level assembly code.
50 #define DEFINE_IDTENTRY(func) \
51 static __always_inline void __##func(struct pt_regs *regs); \
53 __visible noinstr void func(struct pt_regs *regs) \
55 irqentry_state_t state = irqentry_enter(regs); \
57 instrumentation_begin(); \
59 instrumentation_end(); \
60 irqentry_exit(regs, state); \
63 static __always_inline void __##func(struct pt_regs *regs)
65 /* Special case for 32bit IRET 'trap' */
66 #define DECLARE_IDTENTRY_SW DECLARE_IDTENTRY
67 #define DEFINE_IDTENTRY_SW DEFINE_IDTENTRY
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
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
80 * Same as DECLARE_IDTENTRY, but has an extra error_code argument for the
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)
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
93 * Same as DEFINE_IDTENTRY, but has an extra error_code argument
95 #define DEFINE_IDTENTRY_ERRORCODE(func) \
96 static __always_inline void __##func(struct pt_regs *regs, \
97 unsigned long error_code); \
99 __visible noinstr void func(struct pt_regs *regs, \
100 unsigned long error_code) \
102 irqentry_state_t state = irqentry_enter(regs); \
104 instrumentation_begin(); \
105 __##func (regs, error_code); \
106 instrumentation_end(); \
107 irqentry_exit(regs, state); \
110 static __always_inline void __##func(struct pt_regs *regs, \
111 unsigned long error_code)
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
119 * Maps to DECLARE_IDTENTRY().
121 #define DECLARE_IDTENTRY_RAW(vector, func) \
122 DECLARE_IDTENTRY(vector, func)
125 * DEFINE_IDTENTRY_RAW - Emit code for raw IDT entry points
126 * @func: Function name of the entry point
128 * @func is called from ASM entry code with interrupts disabled.
130 * The macro is written so it acts as function definition. Append the
131 * body with a pair of curly brackets.
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.
138 #define DEFINE_IDTENTRY_RAW(func) \
139 __visible noinstr void func(struct pt_regs *regs)
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
147 * Maps to DECLARE_IDTENTRY_ERRORCODE()
149 #define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) \
150 DECLARE_IDTENTRY_ERRORCODE(vector, func)
153 * DEFINE_IDTENTRY_RAW_ERRORCODE - Emit code for raw IDT entry points
154 * @func: Function name of the entry point
156 * @func is called from ASM entry code with interrupts disabled.
158 * The macro is written so it acts as function definition. Append the
159 * body with a pair of curly brackets.
161 * Contrary to DEFINE_IDTENTRY_ERRORCODE() this does not invoke the
162 * irqentry_enter/exit() helpers before and after the body invocation. This
163 * needs to be done in the body itself if applicable. Use if extra work
164 * is required before the enter/exit() helpers are invoked.
166 #define DEFINE_IDTENTRY_RAW_ERRORCODE(func) \
167 __visible noinstr void func(struct pt_regs *regs, unsigned long error_code)
170 * 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
175 * Maps to DECLARE_IDTENTRY_ERRORCODE()
177 #define DECLARE_IDTENTRY_IRQ(vector, func) \
178 DECLARE_IDTENTRY_ERRORCODE(vector, func)
181 * DEFINE_IDTENTRY_IRQ - Emit code for device interrupt IDT entry points
182 * @func: Function name of the entry point
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.
188 * irq_enter/exit_rcu() are invoked before the function body and the
189 * KVM L1D flush request is set. Stack switching to the interrupt stack
190 * has to be done in the function body if necessary.
192 #define DEFINE_IDTENTRY_IRQ(func) \
193 static __always_inline void __##func(struct pt_regs *regs, u8 vector); \
195 __visible noinstr void func(struct pt_regs *regs, \
196 unsigned long error_code) \
198 irqentry_state_t state = irqentry_enter(regs); \
200 instrumentation_begin(); \
202 kvm_set_cpu_l1tf_flush_l1d(); \
203 __##func (regs, (u8)error_code); \
205 instrumentation_end(); \
206 irqentry_exit(regs, state); \
209 static __always_inline void __##func(struct pt_regs *regs, u8 vector)
212 * 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
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
221 * Maps to DECLARE_IDTENTRY().
223 #define DECLARE_IDTENTRY_SYSVEC(vector, func) \
224 DECLARE_IDTENTRY(vector, func)
227 * DEFINE_IDTENTRY_SYSVEC - Emit code for system vector IDT entry points
228 * @func: Function name of the entry point
230 * irqentry_enter/exit() and irq_enter/exit_rcu() are invoked before the
231 * function body. KVM L1D flush request is set.
233 * Runs the function on the interrupt stack if the entry hit kernel mode
235 #define DEFINE_IDTENTRY_SYSVEC(func) \
236 static void __##func(struct pt_regs *regs); \
238 __visible noinstr void func(struct pt_regs *regs) \
240 irqentry_state_t state = irqentry_enter(regs); \
242 instrumentation_begin(); \
244 kvm_set_cpu_l1tf_flush_l1d(); \
245 run_sysvec_on_irqstack_cond(__##func, regs); \
247 instrumentation_end(); \
248 irqentry_exit(regs, state); \
251 static noinline void __##func(struct pt_regs *regs)
254 * DEFINE_IDTENTRY_SYSVEC_SIMPLE - Emit code for simple system vector IDT
256 * @func: Function name of the entry point
258 * Runs the function on the interrupted stack. No switch to IRQ stack and
259 * only the minimal __irq_enter/exit() handling.
261 * Only use for 'empty' vectors like reschedule IPI and KVM posted
264 #define DEFINE_IDTENTRY_SYSVEC_SIMPLE(func) \
265 static __always_inline void __##func(struct pt_regs *regs); \
267 __visible noinstr void func(struct pt_regs *regs) \
269 irqentry_state_t state = irqentry_enter(regs); \
271 instrumentation_begin(); \
273 kvm_set_cpu_l1tf_flush_l1d(); \
276 instrumentation_end(); \
277 irqentry_exit(regs, state); \
280 static __always_inline void __##func(struct pt_regs *regs)
283 * 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
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
292 * Maps to DECLARE_IDTENTRY(). Distinct entry point to handle the 32/64-bit
295 #define DECLARE_IDTENTRY_XENCB(vector, func) \
296 DECLARE_IDTENTRY(vector, func)
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
304 * 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
307 #define DECLARE_IDTENTRY_IST(vector, func) \
308 DECLARE_IDTENTRY_RAW(vector, func); \
309 __visible void noist_##func(struct pt_regs *regs)
312 * DEFINE_IDTENTRY_IST - Emit code for IST entry points
313 * @func: Function name of the entry point
315 * Maps to DEFINE_IDTENTRY_RAW
317 #define DEFINE_IDTENTRY_IST(func) \
318 DEFINE_IDTENTRY_RAW(func)
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
326 * Maps to DEFINE_IDTENTRY_RAW().
328 #define DEFINE_IDTENTRY_NOIST(func) \
329 DEFINE_IDTENTRY_RAW(noist_##func)
332 * DECLARE_IDTENTRY_DF - Declare functions for double fault
333 * @vector: Vector number (ignored for C)
334 * @func: Function name of the entry point
336 * Maps to DECLARE_IDTENTRY_RAW_ERRORCODE
338 #define DECLARE_IDTENTRY_DF(vector, func) \
339 DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func)
342 * DEFINE_IDTENTRY_DF - Emit code for double fault
343 * @func: Function name of the entry point
345 * Maps to DEFINE_IDTENTRY_RAW_ERRORCODE
347 #define DEFINE_IDTENTRY_DF(func) \
348 DEFINE_IDTENTRY_RAW_ERRORCODE(func)
350 #else /* CONFIG_X86_64 */
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
357 * Declares two functions:
358 * - The ASM entry point: asm_##func
359 * - The C handler called from the C shim
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)
368 * DEFINE_IDTENTRY_DF - Emit code for double fault on 32bit
369 * @func: Function name of the entry point
371 * This is called through the doublefault shim which already provides
372 * cr2 in the address argument.
374 #define DEFINE_IDTENTRY_DF(func) \
375 __visible noinstr void func(struct pt_regs *regs, \
376 unsigned long error_code, \
377 unsigned long address)
379 #endif /* !CONFIG_X86_64 */
382 #define DECLARE_IDTENTRY_NMI DECLARE_IDTENTRY_RAW
383 #define DEFINE_IDTENTRY_NMI DEFINE_IDTENTRY_RAW
386 #define DECLARE_IDTENTRY_MCE DECLARE_IDTENTRY_IST
387 #define DEFINE_IDTENTRY_MCE DEFINE_IDTENTRY_IST
388 #define DEFINE_IDTENTRY_MCE_USER DEFINE_IDTENTRY_NOIST
390 #define DECLARE_IDTENTRY_DEBUG DECLARE_IDTENTRY_IST
391 #define DEFINE_IDTENTRY_DEBUG DEFINE_IDTENTRY_IST
392 #define DEFINE_IDTENTRY_DEBUG_USER DEFINE_IDTENTRY_NOIST
395 #else /* !__ASSEMBLY__ */
398 * The ASM variants for DECLARE_IDTENTRY*() which emit the ASM entry stubs.
400 #define DECLARE_IDTENTRY(vector, func) \
401 idtentry vector asm_##func func has_error_code=0
403 #define DECLARE_IDTENTRY_ERRORCODE(vector, func) \
404 idtentry vector asm_##func func has_error_code=1
406 /* Special case for 32bit IRET 'trap'. Do not emit ASM code */
407 #define DECLARE_IDTENTRY_SW(vector, func)
409 #define DECLARE_IDTENTRY_RAW(vector, func) \
410 DECLARE_IDTENTRY(vector, func)
412 #define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func) \
413 DECLARE_IDTENTRY_ERRORCODE(vector, func)
415 /* Entries for common/spurious (device) interrupts */
416 #define DECLARE_IDTENTRY_IRQ(vector, func) \
417 idtentry_irq vector func
419 /* System vector entries */
420 #define DECLARE_IDTENTRY_SYSVEC(vector, func) \
421 idtentry_sysvec vector func
424 # define DECLARE_IDTENTRY_MCE(vector, func) \
425 idtentry_mce_db vector asm_##func func
427 # define DECLARE_IDTENTRY_DEBUG(vector, func) \
428 idtentry_mce_db vector asm_##func func
430 # define DECLARE_IDTENTRY_DF(vector, func) \
431 idtentry_df vector asm_##func func
433 # define DECLARE_IDTENTRY_XENCB(vector, func) \
434 DECLARE_IDTENTRY(vector, func)
437 # define DECLARE_IDTENTRY_MCE(vector, func) \
438 DECLARE_IDTENTRY(vector, func)
440 /* No ASM emitted for DF as this goes through a C shim */
441 # define DECLARE_IDTENTRY_DF(vector, func)
443 /* No ASM emitted for XEN hypervisor callback */
444 # define DECLARE_IDTENTRY_XENCB(vector, func)
448 /* No ASM code emitted for NMI */
449 #define DECLARE_IDTENTRY_NMI(vector, func)
452 * ASM code to emit the common vector entry stubs where each stub is
453 * packed into 8 bytes.
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
466 SYM_CODE_START(irq_entries_start)
467 vector=FIRST_EXTERNAL_VECTOR
468 .rept (FIRST_SYSTEM_VECTOR - FIRST_EXTERNAL_VECTOR)
469 UNWIND_HINT_IRET_REGS
472 jmp asm_common_interrupt
474 /* Ensure that the above is 8 bytes max */
478 SYM_CODE_END(irq_entries_start)
480 #ifdef CONFIG_X86_LOCAL_APIC
482 SYM_CODE_START(spurious_entries_start)
483 vector=FIRST_SYSTEM_VECTOR
484 .rept (NR_VECTORS - FIRST_SYSTEM_VECTOR)
485 UNWIND_HINT_IRET_REGS
488 jmp asm_spurious_interrupt
490 /* Ensure that the above is 8 bytes max */
494 SYM_CODE_END(spurious_entries_start)
497 #endif /* __ASSEMBLY__ */
500 * The actual entry points. Note that DECLARE_IDTENTRY*() serves two
502 * - provide the function declarations when included from C-Code
503 * - emit the ASM stubs when included from entry_32/64.S
505 * This avoids duplicate defines and ensures that everything is consistent.
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
513 #define X86_TRAP_OTHER 0xFFFF
515 /* Simple exception entry points. No hardware error code */
516 DECLARE_IDTENTRY(X86_TRAP_DE, exc_divide_error);
517 DECLARE_IDTENTRY(X86_TRAP_OF, exc_overflow);
518 DECLARE_IDTENTRY(X86_TRAP_BR, exc_bounds);
519 DECLARE_IDTENTRY(X86_TRAP_NM, exc_device_not_available);
520 DECLARE_IDTENTRY(X86_TRAP_OLD_MF, exc_coproc_segment_overrun);
521 DECLARE_IDTENTRY(X86_TRAP_SPURIOUS, exc_spurious_interrupt_bug);
522 DECLARE_IDTENTRY(X86_TRAP_MF, exc_coprocessor_error);
523 DECLARE_IDTENTRY(X86_TRAP_XF, exc_simd_coprocessor_error);
525 /* 32bit software IRET trap. Do not emit ASM code */
526 DECLARE_IDTENTRY_SW(X86_TRAP_IRET, iret_error);
528 /* Simple exception entries with error code pushed by hardware */
529 DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_TS, exc_invalid_tss);
530 DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_NP, exc_segment_not_present);
531 DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_SS, exc_stack_segment);
532 DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_GP, exc_general_protection);
533 DECLARE_IDTENTRY_ERRORCODE(X86_TRAP_AC, exc_alignment_check);
535 /* Raw exception entries which need extra work */
536 DECLARE_IDTENTRY_RAW(X86_TRAP_UD, exc_invalid_op);
537 DECLARE_IDTENTRY_RAW(X86_TRAP_BP, exc_int3);
538 DECLARE_IDTENTRY_RAW_ERRORCODE(X86_TRAP_PF, exc_page_fault);
540 #ifdef CONFIG_X86_MCE
542 DECLARE_IDTENTRY_MCE(X86_TRAP_MC, exc_machine_check);
544 DECLARE_IDTENTRY_RAW(X86_TRAP_MC, exc_machine_check);
549 DECLARE_IDTENTRY_NMI(X86_TRAP_NMI, exc_nmi);
551 DECLARE_IDTENTRY_RAW(X86_TRAP_NMI, xenpv_exc_nmi);
556 DECLARE_IDTENTRY_DEBUG(X86_TRAP_DB, exc_debug);
558 DECLARE_IDTENTRY_RAW(X86_TRAP_DB, exc_debug);
561 DECLARE_IDTENTRY_RAW(X86_TRAP_DB, xenpv_exc_debug);
565 DECLARE_IDTENTRY_DF(X86_TRAP_DF, exc_double_fault);
568 DECLARE_IDTENTRY_XENCB(X86_TRAP_OTHER, exc_xen_hypervisor_callback);
571 /* Device interrupts common/spurious */
572 DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, common_interrupt);
573 #ifdef CONFIG_X86_LOCAL_APIC
574 DECLARE_IDTENTRY_IRQ(X86_TRAP_OTHER, spurious_interrupt);
577 /* System vector entry points */
578 #ifdef CONFIG_X86_LOCAL_APIC
579 DECLARE_IDTENTRY_SYSVEC(ERROR_APIC_VECTOR, sysvec_error_interrupt);
580 DECLARE_IDTENTRY_SYSVEC(SPURIOUS_APIC_VECTOR, sysvec_spurious_apic_interrupt);
581 DECLARE_IDTENTRY_SYSVEC(LOCAL_TIMER_VECTOR, sysvec_apic_timer_interrupt);
582 DECLARE_IDTENTRY_SYSVEC(X86_PLATFORM_IPI_VECTOR, sysvec_x86_platform_ipi);
586 DECLARE_IDTENTRY(RESCHEDULE_VECTOR, sysvec_reschedule_ipi);
587 DECLARE_IDTENTRY_SYSVEC(IRQ_MOVE_CLEANUP_VECTOR, sysvec_irq_move_cleanup);
588 DECLARE_IDTENTRY_SYSVEC(REBOOT_VECTOR, sysvec_reboot);
589 DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_SINGLE_VECTOR, sysvec_call_function_single);
590 DECLARE_IDTENTRY_SYSVEC(CALL_FUNCTION_VECTOR, sysvec_call_function);
593 #ifdef CONFIG_X86_LOCAL_APIC
594 # ifdef CONFIG_X86_MCE_THRESHOLD
595 DECLARE_IDTENTRY_SYSVEC(THRESHOLD_APIC_VECTOR, sysvec_threshold);
598 # ifdef CONFIG_X86_MCE_AMD
599 DECLARE_IDTENTRY_SYSVEC(DEFERRED_ERROR_VECTOR, sysvec_deferred_error);
602 # ifdef CONFIG_X86_THERMAL_VECTOR
603 DECLARE_IDTENTRY_SYSVEC(THERMAL_APIC_VECTOR, sysvec_thermal);
606 # ifdef CONFIG_IRQ_WORK
607 DECLARE_IDTENTRY_SYSVEC(IRQ_WORK_VECTOR, sysvec_irq_work);
611 #ifdef CONFIG_HAVE_KVM
612 DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_VECTOR, sysvec_kvm_posted_intr_ipi);
613 DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_WAKEUP_VECTOR, sysvec_kvm_posted_intr_wakeup_ipi);
614 DECLARE_IDTENTRY_SYSVEC(POSTED_INTR_NESTED_VECTOR, sysvec_kvm_posted_intr_nested_ipi);
617 #if IS_ENABLED(CONFIG_HYPERV)
618 DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_hyperv_callback);
619 DECLARE_IDTENTRY_SYSVEC(HYPERV_REENLIGHTENMENT_VECTOR, sysvec_hyperv_reenlightenment);
620 DECLARE_IDTENTRY_SYSVEC(HYPERV_STIMER0_VECTOR, sysvec_hyperv_stimer0);
623 #if IS_ENABLED(CONFIG_ACRN_GUEST)
624 DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_acrn_hv_callback);
627 #ifdef CONFIG_XEN_PVHVM
628 DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_xen_hvm_callback);
631 #ifdef CONFIG_KVM_GUEST
632 DECLARE_IDTENTRY_SYSVEC(HYPERVISOR_CALLBACK_VECTOR, sysvec_kvm_asyncpf_interrupt);
635 #undef X86_TRAP_OTHER