include/asm/cpufeature.h

34  * between the values, the features are classified into 3 types - LOWER_SAFE,
69 	s64		safe_val; /* safe value for FTR_EXACT features */
78  * @mask		Mask of the features that are overridden by @val
114  * We use arm64_cpu_capabilities to represent system features, errata work
145  *        feature. This category is for features that are "finalised"
504 cpuid_feature_extract_signed_field_width(u64 features, int field, int width)
506 	return (s64)(features << (64 - width - field)) >> (64 - width);
510 cpuid_feature_extract_signed_field(u64 features, int field)
512 	return cpuid_feature_extract_signed_field_width(features, field, 4);
516 cpuid_feature_extract_unsigned_field_width(u64 features, int field, int width)
518 	return (u64)(features << (64 - width - field)) >> (64 - width);
522 cpuid_feature_extract_unsigned_field(u64 features, int field)
524 	return cpuid_feature_extract_unsigned_field_width(features, field, 4);
533 cpuid_feature_cap_perfmon_field(u64 features, int field, u64 cap)
535 	u64 val = cpuid_feature_extract_unsigned_field(features, field);
543 		features &= ~mask;
544 		features |= (cap << field) & mask;
547 	return features;
561 cpuid_feature_extract_field_width(u64 features, int field, int width, bool sign)
566 		cpuid_feature_extract_signed_field_width(features, field, width) :
567 		cpuid_feature_extract_unsigned_field_width(features, field, width);
571 cpuid_feature_extract_field(u64 features, int field, bool sign)
573 	return cpuid_feature_extract_field_width(features, field, 4, sign);
959 	 * Software features are pseudo CPU features that have no underlying