const golang.org/x/sys/unix.EL2NSYNC

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux_amd64.go#L562: 	EL2NSYNC        = syscall.Errno(0x2d)

The pages are generated with Golds v0.4.9. (GOOS=linux GOARCH=amd64)