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

one use

	golang.org/x/sys/unix (current package)
		zerrors_linux.go#L2579: 	PR_RISCV_SET_ICACHE_FLUSH_CTX               = 0x47

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