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2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d 
 kernel/arch/x86/include/asm/traps.h
....@@ -6,89 +6,22 @@
66 #include <linux/kprobes.h>
77 
88 #include <asm/debugreg.h>
9
+#include <asm/idtentry.h>
910 #include <asm/siginfo.h>			/* TRAP_TRACE, ... */
11
+#include <asm/trap_pf.h>
1012 
11
-#define dotraplinkage __visible
12
-
13
-asmlinkage void divide_error(void);
14
-asmlinkage void debug(void);
15
-asmlinkage void nmi(void);
16
-asmlinkage void int3(void);
17
-asmlinkage void overflow(void);
18
-asmlinkage void bounds(void);
19
-asmlinkage void invalid_op(void);
20
-asmlinkage void device_not_available(void);
2113 #ifdef CONFIG_X86_64
22
-asmlinkage void double_fault(void);
23
-#endif
24
-asmlinkage void coprocessor_segment_overrun(void);
25
-asmlinkage void invalid_TSS(void);
26
-asmlinkage void segment_not_present(void);
27
-asmlinkage void stack_segment(void);
28
-asmlinkage void general_protection(void);
29
-asmlinkage void page_fault(void);
30
-asmlinkage void async_page_fault(void);
31
-asmlinkage void spurious_interrupt_bug(void);
32
-asmlinkage void coprocessor_error(void);
33
-asmlinkage void alignment_check(void);
34
-#ifdef CONFIG_X86_MCE
35
-asmlinkage void machine_check(void);
36
-#endif /* CONFIG_X86_MCE */
37
-asmlinkage void simd_coprocessor_error(void);
38
-
39
-#if defined(CONFIG_X86_64) && defined(CONFIG_XEN_PV)
40
-asmlinkage void xen_divide_error(void);
41
-asmlinkage void xen_xennmi(void);
42
-asmlinkage void xen_xendebug(void);
43
-asmlinkage void xen_int3(void);
44
-asmlinkage void xen_overflow(void);
45
-asmlinkage void xen_bounds(void);
46
-asmlinkage void xen_invalid_op(void);
47
-asmlinkage void xen_device_not_available(void);
48
-asmlinkage void xen_double_fault(void);
49
-asmlinkage void xen_coprocessor_segment_overrun(void);
50
-asmlinkage void xen_invalid_TSS(void);
51
-asmlinkage void xen_segment_not_present(void);
52
-asmlinkage void xen_stack_segment(void);
53
-asmlinkage void xen_general_protection(void);
54
-asmlinkage void xen_page_fault(void);
55
-asmlinkage void xen_spurious_interrupt_bug(void);
56
-asmlinkage void xen_coprocessor_error(void);
57
-asmlinkage void xen_alignment_check(void);
58
-#ifdef CONFIG_X86_MCE
59
-asmlinkage void xen_machine_check(void);
60
-#endif /* CONFIG_X86_MCE */
61
-asmlinkage void xen_simd_coprocessor_error(void);
14
+asmlinkage __visible notrace struct pt_regs *sync_regs(struct pt_regs *eregs);
15
+asmlinkage __visible notrace
16
+struct bad_iret_stack *fixup_bad_iret(struct bad_iret_stack *s);
17
+void __init trap_init(void);
18
+asmlinkage __visible noinstr struct pt_regs *vc_switch_off_ist(struct pt_regs *eregs);
6219 #endif
6320 
64
-dotraplinkage void do_divide_error(struct pt_regs *, long);
65
-dotraplinkage void do_debug(struct pt_regs *, long);
66
-dotraplinkage void do_nmi(struct pt_regs *, long);
67
-dotraplinkage void do_int3(struct pt_regs *, long);
68
-dotraplinkage void do_overflow(struct pt_regs *, long);
69
-dotraplinkage void do_bounds(struct pt_regs *, long);
70
-dotraplinkage void do_invalid_op(struct pt_regs *, long);
71
-dotraplinkage void do_device_not_available(struct pt_regs *, long);
72
-dotraplinkage void do_coprocessor_segment_overrun(struct pt_regs *, long);
73
-dotraplinkage void do_invalid_TSS(struct pt_regs *, long);
74
-dotraplinkage void do_segment_not_present(struct pt_regs *, long);
75
-dotraplinkage void do_stack_segment(struct pt_regs *, long);
76
-#ifdef CONFIG_X86_64
77
-dotraplinkage void do_double_fault(struct pt_regs *, long);
21
+#ifdef CONFIG_X86_F00F_BUG
22
+/* For handling the FOOF bug */
23
+void handle_invalid_op(struct pt_regs *regs);
7824 #endif
79
-dotraplinkage void do_general_protection(struct pt_regs *, long);
80
-dotraplinkage void do_page_fault(struct pt_regs *, unsigned long);
81
-dotraplinkage void do_spurious_interrupt_bug(struct pt_regs *, long);
82
-dotraplinkage void do_coprocessor_error(struct pt_regs *, long);
83
-dotraplinkage void do_alignment_check(struct pt_regs *, long);
84
-#ifdef CONFIG_X86_MCE
85
-dotraplinkage void do_machine_check(struct pt_regs *, long);
86
-#endif
87
-dotraplinkage void do_simd_coprocessor_error(struct pt_regs *, long);
88
-#ifdef CONFIG_X86_32
89
-dotraplinkage void do_iret_error(struct pt_regs *, long);
90
-#endif
91
-dotraplinkage void do_mce(struct pt_regs *, long);
9225 
9326 static inline int get_si_code(unsigned long condition)
9427 {
....@@ -103,16 +36,8 @@
10336 extern int panic_on_unrecovered_nmi;
10437 
10538 void math_emulate(struct math_emu_info *);
106
-#ifndef CONFIG_X86_32
107
-asmlinkage void smp_thermal_interrupt(struct pt_regs *regs);
108
-asmlinkage void smp_threshold_interrupt(struct pt_regs *regs);
109
-asmlinkage void smp_deferred_error_interrupt(struct pt_regs *regs);
110
-#endif
11139 
112
-extern void ist_enter(struct pt_regs *regs);
113
-extern void ist_exit(struct pt_regs *regs);
114
-extern void ist_begin_non_atomic(struct pt_regs *regs);
115
-extern void ist_end_non_atomic(void);
40
+bool fault_in_kernel_space(unsigned long address);
11641 
11742 #ifdef CONFIG_VMAP_STACK
11843 void __noreturn handle_stack_overflow(const char *message,
....@@ -120,47 +45,4 @@
12045 				      unsigned long fault_address);
12146 #endif
12247 
123
-/* Interrupts/Exceptions */
124
-enum {
125
-	X86_TRAP_DE = 0,	/*  0, Divide-by-zero */
126
-	X86_TRAP_DB,		/*  1, Debug */
127
-	X86_TRAP_NMI,		/*  2, Non-maskable Interrupt */
128
-	X86_TRAP_BP,		/*  3, Breakpoint */
129
-	X86_TRAP_OF,		/*  4, Overflow */
130
-	X86_TRAP_BR,		/*  5, Bound Range Exceeded */
131
-	X86_TRAP_UD,		/*  6, Invalid Opcode */
132
-	X86_TRAP_NM,		/*  7, Device Not Available */
133
-	X86_TRAP_DF,		/*  8, Double Fault */
134
-	X86_TRAP_OLD_MF,	/*  9, Coprocessor Segment Overrun */
135
-	X86_TRAP_TS,		/* 10, Invalid TSS */
136
-	X86_TRAP_NP,		/* 11, Segment Not Present */
137
-	X86_TRAP_SS,		/* 12, Stack Segment Fault */
138
-	X86_TRAP_GP,		/* 13, General Protection Fault */
139
-	X86_TRAP_PF,		/* 14, Page Fault */
140
-	X86_TRAP_SPURIOUS,	/* 15, Spurious Interrupt */
141
-	X86_TRAP_MF,		/* 16, x87 Floating-Point Exception */
142
-	X86_TRAP_AC,		/* 17, Alignment Check */
143
-	X86_TRAP_MC,		/* 18, Machine Check */
144
-	X86_TRAP_XF,		/* 19, SIMD Floating-Point Exception */
145
-	X86_TRAP_IRET = 32,	/* 32, IRET Exception */
146
-};
147
-
148
-/*
149
- * Page fault error code bits:
150
- *
151
- *   bit 0 ==	 0: no page found	1: protection fault
152
- *   bit 1 ==	 0: read access		1: write access
153
- *   bit 2 ==	 0: kernel-mode access	1: user-mode access
154
- *   bit 3 ==				1: use of reserved bit detected
155
- *   bit 4 ==				1: fault was an instruction fetch
156
- *   bit 5 ==				1: protection keys block access
157
- */
158
-enum x86_pf_error_code {
159
-	X86_PF_PROT	=		1 << 0,
160
-	X86_PF_WRITE	=		1 << 1,
161
-	X86_PF_USER	=		1 << 2,
162
-	X86_PF_RSVD	=		1 << 3,
163
-	X86_PF_INSTR	=		1 << 4,
164
-	X86_PF_PK	=		1 << 5,
165
-};
16648 #endif /* _ASM_X86_TRAPS_H */