include/asm/idtentry.h

1 /* SPDX-License-Identifier: GPL-2.0 */
3 #define _ASM_X86_IDTENTRY_H
8 #define IDT_ALIGN	(8 * (1 + HAS_KERNEL_IBT))
11 #include <linux/entry-common.h>
19  * DECLARE_IDTENTRY - Declare functions for simple IDT entry points
21  * @vector:	Vector number (ignored for C)
22  * @func:	Function name of the entry point
25  * - The ASM entry point: asm_##func
26  * - The XEN PV trap entry point: xen_##func (maybe unused)
27  * - The C handler called from the FRED event dispatcher (maybe unused)
28  * - The C handler called from the ASM entry point
30  * Note: This is the C variant of DECLARE_IDTENTRY(). As the name says it
31  * declares the entry points for usage in C code. There is an ASM variant
34 #define DECLARE_IDTENTRY(vector, func)					\
41  * DEFINE_IDTENTRY - Emit code for simple IDT entry points
42  * @func:	Function name of the entry point
53 #define DEFINE_IDTENTRY(func)						\
69 #define DECLARE_IDTENTRY_SW	DECLARE_IDTENTRY
70 #define DEFINE_IDTENTRY_SW	DEFINE_IDTENTRY
73  * DECLARE_IDTENTRY_ERRORCODE - Declare functions for simple IDT entry points
75  * @vector:	Vector number (ignored for C)
76  * @func:	Function name of the entry point
79  * - The ASM entry point: asm_##func
80  * - The XEN PV trap entry point: xen_##func (maybe unused)
81  * - The C handler called from the ASM entry point
84  * C-handler.
86 #define DECLARE_IDTENTRY_ERRORCODE(vector, func)			\
92  * DEFINE_IDTENTRY_ERRORCODE - Emit code for simple IDT entry points
94  * @func:	Function name of the entry point
98 #define DEFINE_IDTENTRY_ERRORCODE(func)					\
117  * DECLARE_IDTENTRY_RAW - Declare functions for raw IDT entry points
119  * @vector:	Vector number (ignored for C)
120  * @func:	Function name of the entry point
124 #define DECLARE_IDTENTRY_RAW(vector, func)				\
128  * DEFINE_IDTENTRY_RAW - Emit code for raw IDT entry points
129  * @func:	Function name of the entry point
141 #define DEFINE_IDTENTRY_RAW(func)					\
145  * DEFINE_FREDENTRY_RAW - Emit code for raw FRED entry points
146  * @func:	Function name of the entry point
152 #define DEFINE_FREDENTRY_RAW(func)					\
156  * DECLARE_IDTENTRY_RAW_ERRORCODE - Declare functions for raw IDT entry points
158  * @vector:	Vector number (ignored for C)
159  * @func:	Function name of the entry point
163 #define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func)			\
167  * DEFINE_IDTENTRY_RAW_ERRORCODE - Emit code for raw IDT entry points
168  * @func:	Function name of the entry point
180 #define DEFINE_IDTENTRY_RAW_ERRORCODE(func)				\
184  * DECLARE_IDTENTRY_IRQ - Declare functions for device interrupt IDT entry
186  * @vector:	Vector number (ignored for C)
187  * @func:	Function name of the entry point
191 #define DECLARE_IDTENTRY_IRQ(vector, func)				\
195  * DEFINE_IDTENTRY_IRQ - Emit code for device interrupt IDT entry points
196  * @func:	Function name of the entry point
206 #define DEFINE_IDTENTRY_IRQ(func)					\
225  * DECLARE_IDTENTRY_SYSVEC - Declare functions for system vector entry points
226  * @vector:	Vector number (ignored for C)
227  * @func:	Function name of the entry point
230  * - The ASM entry point: asm_##func
231  * - The XEN PV trap entry point: xen_##func (maybe unused)
232  * - The C handler called from the ASM entry point
236 #define DECLARE_IDTENTRY_SYSVEC(vector, func)				\
240  * DEFINE_IDTENTRY_SYSVEC - Emit code for system vector IDT entry points
241  * @func:	Function name of the entry point
248 #define DEFINE_IDTENTRY_SYSVEC(func)					\
275  * DEFINE_IDTENTRY_SYSVEC_SIMPLE - Emit code for simple system vector IDT
277  * @func:	Function name of the entry point
285 #define DEFINE_IDTENTRY_SYSVEC_SIMPLE(func)				\
314  * DECLARE_IDTENTRY_XENCB - Declare functions for XEN HV callback entry point
315  * @vector:	Vector number (ignored for C)
316  * @func:	Function name of the entry point
319  * - The ASM entry point: asm_##func
320  * - The XEN PV trap entry point: xen_##func (maybe unused)
321  * - The C handler called from the ASM entry point
323  * Maps to DECLARE_IDTENTRY(). Distinct entry point to handle the 32/64-bit
326 #define DECLARE_IDTENTRY_XENCB(vector, func)				\
331  * DECLARE_IDTENTRY_IST - Declare functions for IST handling IDT entry points
332  * @vector:	Vector number (ignored for C)
333  * @func:	Function name of the entry point
335  * Maps to DECLARE_IDTENTRY_RAW, but declares also the NOIST C handler
338 #define DECLARE_IDTENTRY_IST(vector, func)				\
343  * DECLARE_IDTENTRY_VC - Declare functions for the VC entry point
344  * @vector:	Vector number (ignored for C)
345  * @func:	Function name of the entry point
348  * safe_stack C handler.
350 #define DECLARE_IDTENTRY_VC(vector, func)				\
356  * DEFINE_IDTENTRY_IST - Emit code for IST entry points
357  * @func:	Function name of the entry point
361 #define DEFINE_IDTENTRY_IST(func)					\
365  * DEFINE_IDTENTRY_NOIST - Emit code for NOIST entry points which
367  * @func:	Function name of the entry point. Must be the same as
368  *		the function name of the corresponding IST variant
372 #define DEFINE_IDTENTRY_NOIST(func)					\
376  * DECLARE_IDTENTRY_DF - Declare functions for double fault
377  * @vector:	Vector number (ignored for C)
378  * @func:	Function name of the entry point
382 #define DECLARE_IDTENTRY_DF(vector, func)				\
386  * DEFINE_IDTENTRY_DF - Emit code for double fault
387  * @func:	Function name of the entry point
391 #define DEFINE_IDTENTRY_DF(func)					\
395  * DEFINE_IDTENTRY_VC_KERNEL - Emit code for VMM communication handler
397  * @func:	Function name of the entry point
401 #define DEFINE_IDTENTRY_VC_KERNEL(func)				\
405  * DEFINE_IDTENTRY_VC_USER - Emit code for VMM communication handler
407  * @func:	Function name of the entry point
411 #define DEFINE_IDTENTRY_VC_USER(func)				\
417  * DECLARE_IDTENTRY_DF - Declare functions for double fault 32bit variant
418  * @vector:	Vector number (ignored for C)
419  * @func:	Function name of the entry point
422  * - The ASM entry point: asm_##func
423  * - The C handler called from the C shim
425 #define DECLARE_IDTENTRY_DF(vector, func)				\
432  * DEFINE_IDTENTRY_DF - Emit code for double fault on 32bit
433  * @func:	Function name of the entry point
438 #define DEFINE_IDTENTRY_DF(func)					\
445 /* C-Code mapping */
446 #define DECLARE_IDTENTRY_NMI		DECLARE_IDTENTRY_RAW
447 #define DEFINE_IDTENTRY_NMI		DEFINE_IDTENTRY_RAW
448 #define DEFINE_FREDENTRY_NMI		DEFINE_FREDENTRY_RAW
451 #define DECLARE_IDTENTRY_MCE		DECLARE_IDTENTRY_IST
452 #define DEFINE_IDTENTRY_MCE		DEFINE_IDTENTRY_IST
453 #define DEFINE_IDTENTRY_MCE_USER	DEFINE_IDTENTRY_NOIST
454 #define DEFINE_FREDENTRY_MCE		DEFINE_FREDENTRY_RAW
456 #define DECLARE_IDTENTRY_DEBUG		DECLARE_IDTENTRY_IST
457 #define DEFINE_IDTENTRY_DEBUG		DEFINE_IDTENTRY_IST
458 #define DEFINE_IDTENTRY_DEBUG_USER	DEFINE_IDTENTRY_NOIST
459 #define DEFINE_FREDENTRY_DEBUG		DEFINE_FREDENTRY_RAW
470 #define sysvec_install(vector, function) {				\
482 #define DECLARE_IDTENTRY(vector, func)					\
485 #define DECLARE_IDTENTRY_ERRORCODE(vector, func)			\
489 #define DECLARE_IDTENTRY_SW(vector, func)
491 #define DECLARE_IDTENTRY_RAW(vector, func)				\
494 #define DECLARE_IDTENTRY_RAW_ERRORCODE(vector, func)			\
498 #define DECLARE_IDTENTRY_IRQ(vector, func)				\
502 #define DECLARE_IDTENTRY_SYSVEC(vector, func)				\
506 # define DECLARE_IDTENTRY_MCE(vector, func)				\
509 # define DECLARE_IDTENTRY_DEBUG(vector, func)				\
512 # define DECLARE_IDTENTRY_DF(vector, func)				\
515 # define DECLARE_IDTENTRY_XENCB(vector, func)				\
518 # define DECLARE_IDTENTRY_VC(vector, func)				\
522 # define DECLARE_IDTENTRY_MCE(vector, func)				\
525 /* No ASM emitted for DF as this goes through a C shim */
526 # define DECLARE_IDTENTRY_DF(vector, func)
529 # define DECLARE_IDTENTRY_XENCB(vector, func)
534 #define DECLARE_IDTENTRY_NMI(vector, func)
545  * odd conversion back to a real vector number in the C entry points. Using
546  * .byte achieves the same thing and the only fixup needed in the C entry
560 	.fill 0b + IDT_ALIGN - ., 1, 0xcc
576 	.fill 0b + IDT_ALIGN - ., 1, 0xcc
587  *  - provide the function declarations when included from C-Code
588  *  - emit the ASM stubs when included from entry_32/64.S
598 #define X86_TRAP_OTHER		0xFFFF
645  * 64-bit, i.e. without using an IST.  asm_exc_nmi() requires an IST to work
646  * correctly vs. the NMI 'executing' marker.  Used for 32-bit kernels as well
712 # define fred_sysvec_reschedule_ipi			NULL
713 # define fred_sysvec_reboot				NULL
714 # define fred_sysvec_call_function_single		NULL
715 # define fred_sysvec_call_function			NULL
722 # define fred_sysvec_threshold				NULL
728 # define fred_sysvec_deferred_error			NULL
734 # define fred_sysvec_thermal				NULL
740 # define fred_sysvec_irq_work				NULL
749 # define fred_sysvec_kvm_posted_intr_ipi		NULL
750 # define fred_sysvec_kvm_posted_intr_wakeup_ipi		NULL
751 # define fred_sysvec_kvm_posted_intr_nested_ipi		NULL
757 # define fred_sysvec_posted_msi_notification		NULL