Merge: x86/mce/intel: drivers updates

MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/1409

Description:
updates for x86/mce/intel

JIRA: https://issues.redhat.com/browse/RHEL-113399

Build Info: 68834699

Tested: Successful platform test results on Intel (intel-birchstream-gnr-cwf-ap-02) system.

The following commits have been excluded from the backport:

c435e60 x86/msr: Rename 'rdmsrl()' to 'rdmsrq()'

78255eb x86/msr: Rename 'wrmsrl()' to 'wrmsrq()'

6fe22ab x86/msr: Rename 'rdmsrl_safe()' to 'rdmsrq_safe()'

6fa17ef x86/msr: Rename 'wrmsrl_safe()' to 'wrmsrq_safe()'

Signed-off-by: Steve Best <sbest@redhat.com>

Approved-by: Tony Camuso <tcamuso@redhat.com>
Approved-by: David Arcari <darcari@redhat.com>
Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com>

Merged-by: Scott Weaver <scweaver@redhat.com>

Author: swvrrh

arch/x86/include/asm/mce.h

@@ -244,7 +244,7 @@ static inline void cmci_rediscover(void) {}
 static inline void cmci_recheck(void) {}
 #endif
 
-int mce_available(struct cpuinfo_x86 *c);
+bool mce_available(struct cpuinfo_x86 *c);
 bool mce_is_memory_error(struct mce *m);
 bool mce_is_correctable(struct mce *m);
 bool mce_usable_address(struct mce *m);
@@ -264,7 +264,7 @@ enum mcp_flags {
 
 void machine_check_poll(enum mcp_flags flags, mce_banks_t *b);
 
-int mce_notify_irq(void);
+bool mce_notify_irq(void);
 
 DECLARE_PER_CPU(struct mce, injectm);
 

arch/x86/kernel/cpu/mce/amd.c

@@ -391,15 +391,15 @@ static bool lvt_interrupt_supported(unsigned int bank, u32 msr_high_bits)
 	return msr_high_bits & BIT(28);
 }
 
-static int lvt_off_valid(struct threshold_block *b, int apic, u32 lo, u32 hi)
+static bool lvt_off_valid(struct threshold_block *b, int apic, u32 lo, u32 hi)
 {
 	int msr = (hi & MASK_LVTOFF_HI) >> 20;
 
 	if (apic < 0) {
 		pr_err(FW_BUG "cpu %d, failed to setup threshold interrupt "
 		       "for bank %d, block %d (MSR%08X=0x%x%08x)\n", b->cpu,
 		       b->bank, b->block, b->address, hi, lo);
-		return 0;
+		return false;
 	}
 
 	if (apic != msr) {
@@ -409,15 +409,15 @@ static int lvt_off_valid(struct threshold_block *b, int apic, u32 lo, u32 hi)
 		 * was set is reserved. Return early here:
 		 */
 		if (mce_flags.smca)
-			return 0;
+			return false;
 
 		pr_err(FW_BUG "cpu %d, invalid threshold interrupt offset %d "
 		       "for bank %d, block %d (MSR%08X=0x%x%08x)\n",
 		       b->cpu, apic, b->bank, b->block, b->address, hi, lo);
-		return 0;
+		return false;
 	}
 
-	return 1;
+	return true;
 };
 
 /* Reprogram MCx_MISC MSR behind this threshold bank. */

arch/x86/kernel/cpu/mce/core.c

@@ -479,10 +479,10 @@ static noinstr void mce_gather_info(struct mce *m, struct pt_regs *regs)
 	}
 }
 
-int mce_available(struct cpuinfo_x86 *c)
+bool mce_available(struct cpuinfo_x86 *c)
 {
 	if (mca_cfg.disabled)
-		return 0;
+		return false;
 	return cpu_has(c, X86_FEATURE_MCE) && cpu_has(c, X86_FEATURE_MCA);
 }
 
@@ -1748,7 +1748,7 @@ static void mce_timer_delete_all(void)
  * Can be called from interrupt context, but not from machine check/NMI
  * context.
  */
-int mce_notify_irq(void)
+bool mce_notify_irq(void)
 {
 	/* Not more than two messages every minute */
 	static DEFINE_RATELIMIT_STATE(ratelimit, 60*HZ, 2);
@@ -1759,9 +1759,9 @@ int mce_notify_irq(void)
 		if (__ratelimit(&ratelimit))
 			pr_info(HW_ERR "Machine check events logged\n");
 
-		return 1;
+		return true;
 	}
-	return 0;
+	return false;
 }
 EXPORT_SYMBOL_GPL(mce_notify_irq);
 
@@ -1985,25 +1985,25 @@ static int __mcheck_cpu_apply_quirks(struct cpuinfo_x86 *c)
 	return 0;
 }
 
-static int __mcheck_cpu_ancient_init(struct cpuinfo_x86 *c)
+static bool __mcheck_cpu_ancient_init(struct cpuinfo_x86 *c)
 {
 	if (c->x86 != 5)
-		return 0;
+		return false;
 
 	switch (c->x86_vendor) {
 	case X86_VENDOR_INTEL:
 		intel_p5_mcheck_init(c);
 		mce_flags.p5 = 1;
-		return 1;
+		return true;
 	case X86_VENDOR_CENTAUR:
 		winchip_mcheck_init(c);
 		mce_flags.winchip = 1;
-		return 1;
+		return true;
 	default:
-		return 0;
+		return false;
 	}
 
-	return 0;
+	return false;
 }
 
 /*

arch/x86/kernel/cpu/mce/intel.c

@@ -75,12 +75,12 @@ static u16 cmci_threshold[MAX_NR_BANKS];
  */
 #define CMCI_STORM_THRESHOLD	32749
 
-static int cmci_supported(int *banks)
+static bool cmci_supported(int *banks)
 {
 	u64 cap;
 
 	if (mca_cfg.cmci_disabled || mca_cfg.ignore_ce)
-		return 0;
+		return false;
 
 	/*
 	 * Vendor check is not strictly needed, but the initial
@@ -89,12 +89,13 @@ static int cmci_supported(int *banks)
 	 */
 	if (boot_cpu_data.x86_vendor != X86_VENDOR_INTEL &&
 	    boot_cpu_data.x86_vendor != X86_VENDOR_ZHAOXIN)
-		return 0;
+		return false;
 
 	if (!boot_cpu_has(X86_FEATURE_APIC) || lapic_get_maxlvt() < 6)
-		return 0;
+		return false;
+
 	rdmsrl(MSR_IA32_MCG_CAP, cap);
-	*banks = min_t(unsigned, MAX_NR_BANKS, cap & 0xff);
+	*banks = min_t(unsigned, MAX_NR_BANKS, cap & MCG_BANKCNT_MASK);
 	return !!(cap & MCG_CMCI_P);
 }
 
@@ -477,6 +478,7 @@ void mce_intel_feature_init(struct cpuinfo_x86 *c)
 void mce_intel_feature_clear(struct cpuinfo_x86 *c)
 {
 	intel_clear_lmce();
+	cmci_clear();
 }
 
 bool intel_filter_mce(struct mce *m)