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2024-01-31 f70575805708cabdedea7498aaa3f710fde4d920 
 kernel/arch/x86/include/asm/mce.h
....@@ -10,41 +10,45 @@
1010 
1111 /* MCG_CAP register defines */
1212 #define MCG_BANKCNT_MASK	0xff         /* Number of Banks */
13
-#define MCG_CTL_P		(1ULL<<8)    /* MCG_CTL register available */
14
-#define MCG_EXT_P		(1ULL<<9)    /* Extended registers available */
15
-#define MCG_CMCI_P		(1ULL<<10)   /* CMCI supported */
13
+#define MCG_CTL_P		BIT_ULL(8)   /* MCG_CTL register available */
14
+#define MCG_EXT_P		BIT_ULL(9)   /* Extended registers available */
15
+#define MCG_CMCI_P		BIT_ULL(10)  /* CMCI supported */
1616 #define MCG_EXT_CNT_MASK	0xff0000     /* Number of Extended registers */
1717 #define MCG_EXT_CNT_SHIFT	16
1818 #define MCG_EXT_CNT(c)		(((c) & MCG_EXT_CNT_MASK) >> MCG_EXT_CNT_SHIFT)
19
-#define MCG_SER_P		(1ULL<<24)   /* MCA recovery/new status bits */
20
-#define MCG_ELOG_P		(1ULL<<26)   /* Extended error log supported */
21
-#define MCG_LMCE_P		(1ULL<<27)   /* Local machine check supported */
19
+#define MCG_SER_P		BIT_ULL(24)  /* MCA recovery/new status bits */
20
+#define MCG_ELOG_P		BIT_ULL(26)  /* Extended error log supported */
21
+#define MCG_LMCE_P		BIT_ULL(27)  /* Local machine check supported */
2222 
2323 /* MCG_STATUS register defines */
24
-#define MCG_STATUS_RIPV  (1ULL<<0)   /* restart ip valid */
25
-#define MCG_STATUS_EIPV  (1ULL<<1)   /* ip points to correct instruction */
26
-#define MCG_STATUS_MCIP  (1ULL<<2)   /* machine check in progress */
27
-#define MCG_STATUS_LMCES (1ULL<<3)   /* LMCE signaled */
24
+#define MCG_STATUS_RIPV		BIT_ULL(0)   /* restart ip valid */
25
+#define MCG_STATUS_EIPV		BIT_ULL(1)   /* ip points to correct instruction */
26
+#define MCG_STATUS_MCIP		BIT_ULL(2)   /* machine check in progress */
27
+#define MCG_STATUS_LMCES	BIT_ULL(3)   /* LMCE signaled */
2828 
2929 /* MCG_EXT_CTL register defines */
30
-#define MCG_EXT_CTL_LMCE_EN (1ULL<<0) /* Enable LMCE */
30
+#define MCG_EXT_CTL_LMCE_EN	BIT_ULL(0) /* Enable LMCE */
3131 
3232 /* MCi_STATUS register defines */
33
-#define MCI_STATUS_VAL   (1ULL<<63)  /* valid error */
34
-#define MCI_STATUS_OVER  (1ULL<<62)  /* previous errors lost */
35
-#define MCI_STATUS_UC    (1ULL<<61)  /* uncorrected error */
36
-#define MCI_STATUS_EN    (1ULL<<60)  /* error enabled */
37
-#define MCI_STATUS_MISCV (1ULL<<59)  /* misc error reg. valid */
38
-#define MCI_STATUS_ADDRV (1ULL<<58)  /* addr reg. valid */
39
-#define MCI_STATUS_PCC   (1ULL<<57)  /* processor context corrupt */
40
-#define MCI_STATUS_S	 (1ULL<<56)  /* Signaled machine check */
41
-#define MCI_STATUS_AR	 (1ULL<<55)  /* Action required */
33
+#define MCI_STATUS_VAL		BIT_ULL(63)  /* valid error */
34
+#define MCI_STATUS_OVER		BIT_ULL(62)  /* previous errors lost */
35
+#define MCI_STATUS_UC		BIT_ULL(61)  /* uncorrected error */
36
+#define MCI_STATUS_EN		BIT_ULL(60)  /* error enabled */
37
+#define MCI_STATUS_MISCV	BIT_ULL(59)  /* misc error reg. valid */
38
+#define MCI_STATUS_ADDRV	BIT_ULL(58)  /* addr reg. valid */
39
+#define MCI_STATUS_PCC		BIT_ULL(57)  /* processor context corrupt */
40
+#define MCI_STATUS_S		BIT_ULL(56)  /* Signaled machine check */
41
+#define MCI_STATUS_AR		BIT_ULL(55)  /* Action required */
42
+#define MCI_STATUS_CEC_SHIFT	38           /* Corrected Error Count */
43
+#define MCI_STATUS_CEC_MASK	GENMASK_ULL(52,38)
44
+#define MCI_STATUS_CEC(c)	(((c) & MCI_STATUS_CEC_MASK) >> MCI_STATUS_CEC_SHIFT)
4245 
4346 /* AMD-specific bits */
44
-#define MCI_STATUS_TCC		(1ULL<<55)  /* Task context corrupt */
45
-#define MCI_STATUS_SYNDV	(1ULL<<53)  /* synd reg. valid */
46
-#define MCI_STATUS_DEFERRED	(1ULL<<44)  /* uncorrected error, deferred exception */
47
-#define MCI_STATUS_POISON	(1ULL<<43)  /* access poisonous data */
47
+#define MCI_STATUS_TCC		BIT_ULL(55)  /* Task context corrupt */
48
+#define MCI_STATUS_SYNDV	BIT_ULL(53)  /* synd reg. valid */
49
+#define MCI_STATUS_DEFERRED	BIT_ULL(44)  /* uncorrected error, deferred exception */
50
+#define MCI_STATUS_POISON	BIT_ULL(43)  /* access poisonous data */
51
+#define MCI_STATUS_SCRUB	BIT_ULL(40)  /* Error detected during scrub operation */
4852 
4953 /*
5054  * McaX field if set indicates a given bank supports MCA extensions:
....@@ -84,7 +88,7 @@
8488 #define  MCI_MISC_ADDR_GENERIC	7	/* generic */
8589 
8690 /* CTL2 register defines */
87
-#define MCI_CTL2_CMCI_EN		(1ULL << 30)
91
+#define MCI_CTL2_CMCI_EN		BIT_ULL(30)
8892 #define MCI_CTL2_CMCI_THRESHOLD_MASK	0x7fffULL
8993 
9094 #define MCJ_CTX_MASK		3
....@@ -98,7 +102,7 @@
98102 
99103 #define MCE_OVERFLOW 0		/* bit 0 in flags means overflow */
100104 
101
-#define MCE_LOG_LEN 32
105
+#define MCE_LOG_MIN_LEN 32U
102106 #define MCE_LOG_SIGNATURE	"MACHINECHECK"
103107 
104108 /* AMD Scalable MCA */
....@@ -123,6 +127,32 @@
123127 #define MSR_AMD64_SMCA_MCx_DEADDR(x)	(MSR_AMD64_SMCA_MC0_DEADDR + 0x10*(x))
124128 #define MSR_AMD64_SMCA_MCx_MISCy(x, y)	((MSR_AMD64_SMCA_MC0_MISC1 + y) + (0x10*(x)))
125129 
130
+#define XEC(x, mask)			(((x) >> 16) & mask)
131
+
132
+/* mce.kflags flag bits for logging etc. */
133
+#define	MCE_HANDLED_CEC		BIT_ULL(0)
134
+#define	MCE_HANDLED_UC		BIT_ULL(1)
135
+#define	MCE_HANDLED_EXTLOG	BIT_ULL(2)
136
+#define	MCE_HANDLED_NFIT	BIT_ULL(3)
137
+#define	MCE_HANDLED_EDAC	BIT_ULL(4)
138
+#define	MCE_HANDLED_MCELOG	BIT_ULL(5)
139
+
140
+/*
141
+ * Indicates an MCE which has happened in kernel space but from
142
+ * which the kernel can recover simply by executing fixup_exception()
143
+ * so that an error is returned to the caller of the function that
144
+ * hit the machine check.
145
+ */
146
+#define MCE_IN_KERNEL_RECOV	BIT_ULL(6)
147
+
148
+/*
149
+ * Indicates an MCE that happened in kernel space while copying data
150
+ * from user. In this case fixup_exception() gets the kernel to the
151
+ * error exit for the copy function. Machine check handler can then
152
+ * treat it like a fault taken in user mode.
153
+ */
154
+#define MCE_IN_KERNEL_COPYIN	BIT_ULL(7)
155
+
126156 /*
127157  * This structure contains all data related to the MCE log.  Also
128158  * carries a signature to make it easier to find from external
....@@ -131,21 +161,24 @@
131161  */
132162 struct mce_log_buffer {
133163 	char signature[12]; /* "MACHINECHECK" */
134
-	unsigned len;	    /* = MCE_LOG_LEN */
164
+	unsigned len;	    /* = elements in .mce_entry[] */
135165 	unsigned next;
136166 	unsigned flags;
137167 	unsigned recordlen;	/* length of struct mce */
138
-	struct mce entry[MCE_LOG_LEN];
168
+	struct mce entry[];
139169 };
140170 
171
+/* Highest last */
141172 enum mce_notifier_prios {
142
-	MCE_PRIO_FIRST		= INT_MAX,
143
-	MCE_PRIO_SRAO		= INT_MAX - 1,
144
-	MCE_PRIO_EXTLOG		= INT_MAX - 2,
145
-	MCE_PRIO_NFIT		= INT_MAX - 3,
146
-	MCE_PRIO_EDAC		= INT_MAX - 4,
147
-	MCE_PRIO_MCELOG		= 1,
148
-	MCE_PRIO_LOWEST		= 0,
173
+	MCE_PRIO_LOWEST,
174
+	MCE_PRIO_MCELOG,
175
+	MCE_PRIO_EDAC,
176
+	MCE_PRIO_NFIT,
177
+	MCE_PRIO_EXTLOG,
178
+	MCE_PRIO_UC,
179
+	MCE_PRIO_EARLY,
180
+	MCE_PRIO_CEC,
181
+	MCE_PRIO_HIGHEST = MCE_PRIO_CEC
149182 };
150183 
151184 struct notifier_block;
....@@ -156,6 +189,15 @@
156189 #include <linux/atomic.h>
157190 
158191 extern int mce_p5_enabled;
192
+
193
+#ifdef CONFIG_ARCH_HAS_COPY_MC
194
+extern void enable_copy_mc_fragile(void);
195
+unsigned long __must_check copy_mc_fragile(void *dst, const void *src, unsigned cnt);
196
+#else
197
+static inline void enable_copy_mc_fragile(void)
198
+{
199
+}
200
+#endif
159201 
160202 #ifdef CONFIG_X86_MCE
161203 int mcheck_init(void);
....@@ -183,12 +225,8 @@
183225 void mce_log(struct mce *m);
184226 DECLARE_PER_CPU(struct device *, mce_device);
185227 
186
-/*
187
- * Maximum banks number.
188
- * This is the limit of the current register layout on
189
- * Intel CPUs.
190
- */
191
-#define MAX_NR_BANKS 32
228
+/* Maximum number of MCA banks per CPU. */
229
+#define MAX_NR_BANKS 64
192230 
193231 #ifdef CONFIG_X86_MCE_INTEL
194232 void mce_intel_feature_init(struct cpuinfo_x86 *c);
....@@ -206,14 +244,6 @@
206244 static inline void cmci_recheck(void) {}
207245 #endif
208246 
209
-#ifdef CONFIG_X86_MCE_AMD
210
-void mce_amd_feature_init(struct cpuinfo_x86 *c);
211
-int umc_normaddr_to_sysaddr(u64 norm_addr, u16 nid, u8 umc, u64 *sys_addr);
212
-#else
213
-static inline void mce_amd_feature_init(struct cpuinfo_x86 *c) { }
214
-static inline int umc_normaddr_to_sysaddr(u64 norm_addr, u16 nid, u8 umc, u64 *sys_addr) { return -EINVAL; };
215
-#endif
216
-
217247 int mce_available(struct cpuinfo_x86 *c);
218248 bool mce_is_memory_error(struct mce *m);
219249 bool mce_is_correctable(struct mce *m);
....@@ -229,6 +259,7 @@
229259 	MCP_TIMESTAMP	= BIT(0),	/* log time stamp */
230260 	MCP_UC		= BIT(1),	/* log uncorrected errors */
231261 	MCP_DONTLOG	= BIT(2),	/* only clear, don't log */
262
+	MCP_QUEUE_LOG	= BIT(3),	/* only queue to genpool */
232263 };
233264 bool machine_check_poll(enum mcp_flags flags, mce_banks_t *b);
234265 
....@@ -242,10 +273,7 @@
242273 /*
243274  * Exception handler
244275  */
245
-
246
-/* Call the installed machine check handler for this CPU setup. */
247
-extern void (*machine_check_vector)(struct pt_regs *, long error_code);
248
-void do_machine_check(struct pt_regs *, long);
276
+void do_machine_check(struct pt_regs *pt_regs);
249277 
250278 /*
251279  * Threshold handler
....@@ -294,6 +322,7 @@
294322 /* These may be used by multiple smca_hwid_mcatypes */
295323 enum smca_bank_types {
296324 	SMCA_LS = 0,	/* Load Store */
325
+	SMCA_LS_V2,	/* Load Store */
297326 	SMCA_IF,	/* Instruction Fetch */
298327 	SMCA_L2_CACHE,	/* L2 Cache */
299328 	SMCA_DE,	/* Decoder Unit */
....@@ -302,11 +331,17 @@
302331 	SMCA_FP,	/* Floating Point */
303332 	SMCA_L3_CACHE,	/* L3 Cache */
304333 	SMCA_CS,	/* Coherent Slave */
334
+	SMCA_CS_V2,	/* Coherent Slave */
305335 	SMCA_PIE,	/* Power, Interrupts, etc. */
306336 	SMCA_UMC,	/* Unified Memory Controller */
307337 	SMCA_PB,	/* Parameter Block */
308338 	SMCA_PSP,	/* Platform Security Processor */
339
+	SMCA_PSP_V2,	/* Platform Security Processor */
309340 	SMCA_SMU,	/* System Management Unit */
341
+	SMCA_SMU_V2,	/* System Management Unit */
342
+	SMCA_MP5,	/* Microprocessor 5 Unit */
343
+	SMCA_NBIO,	/* Northbridge IO Unit */
344
+	SMCA_PCIE,	/* PCI Express Unit */
310345 	N_SMCA_BANK_TYPES
311346 };
312347 
....@@ -315,7 +350,6 @@
315350 struct smca_hwid {
316351 	unsigned int bank_type;	/* Use with smca_bank_types for easy indexing. */
317352 	u32 hwid_mcatype;	/* (hwid,mcatype) tuple */
318
-	u32 xec_bitmap;		/* Bitmap of valid ExtErrorCodes; current max is 21. */
319353 	u8 count;		/* Number of instances. */
320354 };
321355 
....@@ -333,12 +367,18 @@
333367 extern int mce_threshold_create_device(unsigned int cpu);
334368 extern int mce_threshold_remove_device(unsigned int cpu);
335369 
370
+void mce_amd_feature_init(struct cpuinfo_x86 *c);
371
+int umc_normaddr_to_sysaddr(u64 norm_addr, u16 nid, u8 umc, u64 *sys_addr);
372
+
336373 #else
337374 
338
-static inline int mce_threshold_create_device(unsigned int cpu) { return 0; };
339
-static inline int mce_threshold_remove_device(unsigned int cpu) { return 0; };
340
-static inline bool amd_mce_is_memory_error(struct mce *m) { return false; };
341
-
375
+static inline int mce_threshold_create_device(unsigned int cpu)		{ return 0; };
376
+static inline int mce_threshold_remove_device(unsigned int cpu)		{ return 0; };
377
+static inline bool amd_mce_is_memory_error(struct mce *m)		{ return false; };
378
+static inline void mce_amd_feature_init(struct cpuinfo_x86 *c)		{ }
379
+static inline int
380
+umc_normaddr_to_sysaddr(u64 norm_addr, u16 nid, u8 umc, u64 *sys_addr)	{ return -EINVAL; };
342381 #endif
343382 
383
+static inline void mce_hygon_feature_init(struct cpuinfo_x86 *c)	{ return mce_amd_feature_init(c); }
344384 #endif /* _ASM_X86_MCE_H */