HasVX     bool // vector facility. Note: the runtime sets this when it processes auxv records.
	HasVXE    bool // vector-enhancements facility 1
	HasKDSA   bool // elliptic curve functions
	HasECDSA  bool // NIST curves
	HasEDDSA  bool // Edwards curves
	_         CacheLinePad
}

// CPU feature variables are accessed by assembly code in various packages.
//go:linkname X86

		Prefix:   "p384",
		FiatType: "[6]uint64",
		BytesLen: 48,
	},
	// Note that unsaturated_solinas would be about 2x faster than
	// word_by_word_montgomery for P-521, but this curve is used rarely enough
	// that it's not worth carrying unsaturated_solinas support for it.
	{
		Element:  "P521Element",
		Prime:    "2^521 - 1",
		Prefix:   "p521",
		FiatType: "[9]uint64",
		BytesLen: 66,
	},