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

one use

	golang.org/x/sys/unix (current package)
		zsysnum_linux_amd64.go#L374: 	SYS_MAP_SHADOW_STACK        = 453

The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)