arm64/sysreg: Standardise naming for MTE feature enumeration

In preparation for conversion to automatic generation refresh the names
given to the items in the MTE feture enumeration to reflect our standard
pattern for naming, corresponding to the architecture feature names they
reflect. No functional change.
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Kristina Martsenko <kristina.martsenko@arm.com>
Link: https://lore.kernel.org/r/20220905225425.1871461-17-broonie@kernel.orgSigned-off-by: Catalin Marinas <catalin.marinas@arm.com>

arch/arm64/include/asm/cpufeature.h

@@ -633,7 +633,7 @@ static inline bool id_aa64pfr1_mte(u64 pfr1)
 {
 	u32 val = cpuid_feature_extract_unsigned_field(pfr1, ID_AA64PFR1_EL1_MTE_SHIFT);
 
-	return val >= ID_AA64PFR1_EL1_MTE;
+	return val >= ID_AA64PFR1_EL1_MTE_MTE2;
 }
 
 void __init setup_cpu_features(void);

arch/arm64/include/asm/sysreg.h

@@ -727,9 +727,9 @@
 #define ID_AA64PFR1_EL1_SME		1
 
 #define ID_AA64PFR1_EL1_MTE_NI		0x0
-#define ID_AA64PFR1_EL1_MTE_EL0		0x1
-#define ID_AA64PFR1_EL1_MTE		0x2
-#define ID_AA64PFR1_EL1_MTE_ASYMM	0x3
+#define ID_AA64PFR1_EL1_MTE_IMP		0x1
+#define ID_AA64PFR1_EL1_MTE_MTE2	0x2
+#define ID_AA64PFR1_EL1_MTE_MTE3	0x3
 
 /* id_aa64mmfr0 */
 #define ID_AA64MMFR0_EL1_ECV_SHIFT		60

arch/arm64/kernel/cpufeature.c

@@ -2543,7 +2543,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
 		.sys_reg = SYS_ID_AA64PFR1_EL1,
 		.field_pos = ID_AA64PFR1_EL1_MTE_SHIFT,
 		.field_width = 4,
-		.min_field_value = ID_AA64PFR1_EL1_MTE,
+		.min_field_value = ID_AA64PFR1_EL1_MTE_MTE2,
 		.sign = FTR_UNSIGNED,
 		.cpu_enable = cpu_enable_mte,
 	},
@@ -2555,7 +2555,7 @@ static const struct arm64_cpu_capabilities arm64_features[] = {
 		.sys_reg = SYS_ID_AA64PFR1_EL1,
 		.field_pos = ID_AA64PFR1_EL1_MTE_SHIFT,
 		.field_width = 4,
-		.min_field_value = ID_AA64PFR1_EL1_MTE_ASYMM,
+		.min_field_value = ID_AA64PFR1_EL1_MTE_MTE3,
 		.sign = FTR_UNSIGNED,
 	},
 #endif /* CONFIG_ARM64_MTE */
@@ -2748,8 +2748,8 @@ static const struct arm64_cpu_capabilities arm64_elf_hwcaps[] = {
 	HWCAP_MULTI_CAP(ptr_auth_hwcap_gen_matches, CAP_HWCAP, KERNEL_HWCAP_PACG),
 #endif
 #ifdef CONFIG_ARM64_MTE
-	HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_EL1_MTE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_EL1_MTE, CAP_HWCAP, KERNEL_HWCAP_MTE),
-	HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_EL1_MTE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_EL1_MTE_ASYMM, CAP_HWCAP, KERNEL_HWCAP_MTE3),
+	HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_EL1_MTE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_EL1_MTE_MTE2, CAP_HWCAP, KERNEL_HWCAP_MTE),
+	HWCAP_CAP(SYS_ID_AA64PFR1_EL1, ID_AA64PFR1_EL1_MTE_SHIFT, 4, FTR_UNSIGNED, ID_AA64PFR1_EL1_MTE_MTE3, CAP_HWCAP, KERNEL_HWCAP_MTE3),
 #endif /* CONFIG_ARM64_MTE */
 	HWCAP_CAP(SYS_ID_AA64MMFR0_EL1, ID_AA64MMFR0_EL1_ECV_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_ECV),
 	HWCAP_CAP(SYS_ID_AA64MMFR1_EL1, ID_AA64MMFR1_EL1_AFP_SHIFT, 4, FTR_UNSIGNED, 1, CAP_HWCAP, KERNEL_HWCAP_AFP),

arch/arm64/mm/proc.S

@@ -435,7 +435,7 @@ SYM_FUNC_START(__cpu_setup)
 	 */
 	mrs	x10, ID_AA64PFR1_EL1
 	ubfx	x10, x10, #ID_AA64PFR1_EL1_MTE_SHIFT, #4
-	cmp	x10, #ID_AA64PFR1_EL1_MTE
+	cmp	x10, #ID_AA64PFR1_EL1_MTE_MTE2
 	b.lt	1f
 
 	/* Normal Tagged memory type at the corresponding MAIR index */